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NASA Considers Apollo-Era F1 Engine For Space Launch System

MarkWhittington writes "A company named Dynetics, in partnership with Pratt & Whitney Rocketdyne, will perform a study contract for NASA to explore whether a modern version of the Saturn V F1 booster (PDF) could be used on the Space Launch System. These would be the basis for a liquid fueled rocket that would enhance the SLS to make it capable of launching 130 metric tons to low Earth orbit, thus making it capable of supporting deep space exploration missions in the 2020s."

197 comments

  1. Oh man... by Scutter · · Score: 4, Insightful

    I would LOVE to see the F1 back in action. Few things have inspired such awe in me as the launch of a Saturn V rocket and the five tremendous columns of fire atop which it strode.

    --

    "Tell me doctor, with all of your defenses, are there any provisions for an attack by killer bees?"
    1. Re:Oh man... by Anonymous Coward · · Score: 5, Interesting

      Same here. When I was a kid, my bet friend's dad was on the design team. He brought a rolled up, full size drawing of the Saturn V rocket (not just the booster) and laid it out on the athletic field at school. It is also the second loudest device ever created by man. The first being the hydrogen bomb!

    2. Re:Oh man... by Genda · · Score: 4, Interesting

      I grew up in the San Fernando Valley of "Valley Gurl" legend, but it was also the place the RocketDyne tested their engines. At the northwest end of the valley during the 60s, it would be a quiet summer day and them the silence would be split by a deafening roar coming from the Santa Susanna mountains. If we were up in the hills at one of the local parks, we might even catch a glimpse of a column of smoke. Pretty amazing times. Pretty awesome machine.

    3. Re:Oh man... by Anonymous Coward · · Score: 0, Flamebait

      Get out! A FULL SIZE drawing? That's truely inconceivable! Just the logistics of it make it a non-trivial task. You can't just roll it up and take it out on a field - you'd need special handling machinery just to carry it around!

    4. Re:Oh man... by Hans+Lehmann · · Score: 4, Interesting

      What's left of Rocketdyne still exists, and there's an actual F1 engine in front of their offices on Canoga Avenue, just north of Victory. https://maps.google.com/?ll=34.190997,-118.597948&spn=0.00041,0.000603&t=h&z=21

      --
      09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C0
    5. Re:Oh man... by hairyfeet · · Score: 1

      Well I'd also argue why waste money when we already have something that works, and works well?

      The F1 was well built, its tested, its a sunk cost. Sure it'll cost money to put them back in production but I bet it'll be a hell of a lot less than all the work that goes into a brand new design and most importantly we KNOW it works.

      So personally I'm 100% for this as well. The F1 was a damned good design and if we can save costs and get our space program back on track with the F1 back on the pad I say lets do this.

      --
      ACs don't waste your time replying, your posts are never seen by me.
    6. Re:Oh man... by DesScorp · · Score: 4, Interesting

      I would LOVE to see the F1 back in action. Few things have inspired such awe in me as the launch of a Saturn V rocket and the five tremendous columns of fire atop which it strode.

      I've been saying for years that we should simply build an updated Saturn rocket. The primary argument that people threw at me on this was cost: that it would simply cost too much to replace the outdated components in the design. I said that was mush then, and I'll say it now. We (meaning modern countries) continually build updated versions of older designs all the time. It's not that big an obstacle, or that costly either. Not only do we continually update old hardware for current and future use... the B-52 will famously roll along in service for another 25 years, with Boeing sticking new electronics in it... the Russians went one better and simply put their old Tu-95 Bear bombers back into production in the 90's... an aircraft that first flew in 1953. Several Russian rockets are nothing but dressed up old designs, and they work fairly well.

      So don't throw the "too costly/too complex" argument at me. Would an updated Saturn would really cost more than the Ares rockets planned for the Constellation program? I really doubt that. We're way too prone to reinvent the wheel on things like these, with an erroneous belief that "new" always equals "better".

      --
      Life is hard, and the world is cruel
    7. Re:Oh man... by Anonymous Coward · · Score: 0

      Same here. When I was a kid, my bet friend's dad was on the design team. He brought a rolled up, full size drawing of the Saturn V rocket (not just the booster) and laid it out on the athletic field at school. It is also the second loudest device ever created by man. The first being the hydrogen bomb!

      At the time. Since then we've invented Roseanne.

    8. Re:Oh man... by ThePeices · · Score: 3, Funny

      It is also the second loudest device ever created by man. The first being the hydrogen bomb!

      hmm, this doesnt pass the smell test.

      methinks a standard multi-kiloton fission bomb would be louder than the Saturn V. Quieter than a thermonuclear bomb, but louder than the Saturn.

    9. Re:Oh man... by Ellis+D.+Tripp · · Score: 5, Informative

      What's left of the test area is a toxic and radioactive waste site, as well...

      http://en.wikipedia.org/wiki/Santa_Susana_Field_Laboratory

      --
      Remember "News for Nerds, Stuff that Matters"? Help make it a reality again! http://soylentnews.org
    10. Re:Oh man... by Anonymous Coward · · Score: 0

      It depends on how far you are away and the perception of loudness is affected by the duration of the noise.

    11. Re:Oh man... by TCPhotography · · Score: 4, Interesting

      Back in the early 90s there was a study done on the feasibility of returning the F-1 into production relative to developing a single use version of the SSME (Space shuttle main engine), and back then it would have been cheaper even after you include the start up costs to go with the F-1.

      The reason for this is that back when the F-1 was pulled from production a massive effort to secure the institutional knowledge of how to build the engines was undertaken. Thousands of hours of recorded conversions with everyone from the designers to the engineers to the guys on the shop floor on how the engines were built, what problems were encountered, and how the problems were solved.

      As a side note, the Soviets kept the Bear in production for most of the 60's, 70's and 80's which is why they were able to keep building them. The B-52 production stopped in the first half of the 60's, and because the forge that was used to make the single-piece main spar wasn't in use any more, it was scrapped.

      Now, you could redesign the wing to use a multiple piece main spar like modern airliners, but then you wouldn't have the B-52 any more, you'd have something else.

    12. Re:Oh man... by Anonymous Coward · · Score: 1

      The forge is still in use, the jigs were probably destroyed though.

    13. Re:Oh man... by dbIII · · Score: 1

      Another one - DC3. A couple of those with skis fly down to Antarctica every year and they look a lot like the one out of the old movie "The Thing from Outer Space". They've had a portion chopped out and replaced from in front of the wing, making them a bit longer, and have turboprops, but that's about all the changes from the version with skis flying in the 1940s.

    14. Re:Oh man... by rworne · · Score: 1

      That is it, I drive by this every day going to and from work in Warner Center to the south.

      --
      I tried every decent and legal way I could think of to resolve the issue w/the business before I rented the chicken suit
    15. Re:Oh man... by cheesybagel · · Score: 2

      It would be done completely differently today. Different materials, machine tools, tradeoffs. This is why J-2X is taking so long despite supposedly being based on an old design. Not to mention that Rocketdyne actually had recent experience building LOX/LH2 engines while they have designed no working LOX/Kerosene engine in recent times.

    16. Re:Oh man... by DerekLyons · · Score: 1, Funny

      So don't throw the "too costly/too complex" argument at me.

      I won't. You've abundantly demonstrated that you're clueless enough not to comprehend it.

    17. Re:Oh man... by Anonymous Coward · · Score: 0, Funny

      Perception of loudness? Is that how they measure decibels? "Hey Joe! How loud you figure that was?" "Oh I dunno, maybe 200 decibels."

    18. Re:Oh man... by Anonymous Coward · · Score: 0

      I grew up in neighboring Simi Valley and well remember those tests, especially during school hours. Even at the western end of Simi, some seven miles from the test center, the roar was so overwhelming that the teacher would have to pause lecturing until the test ended. Really appreciated that during social studies or US History.

    19. Re:Oh man... by gishzida · · Score: 5, Interesting

      I grew up in Canoga Park and West Hills.... I got to see the Santa Susanna mountains light up when they ran tests when I was a kid in the '60s... then I got lucky:

      I worked at Rocketdyne during the 80s... programming 3 and 4 axis Coordinate Measuring Machines, writing data evaluation and utility programs, and Inspection procedures in the "Precision Measuring Room" for the SSME QA organization... there were only about six of us that did that as the technical staff that over saw about 40 Machine Parts Inspectors [A 3 shift operation during the height of SSME]... We touched the hardware for everyone of the shuttle engines... As far as I was concerned workin' at "The Rocket Factory" was my ideal job...

      We had a mixed batch of stuff to work with: Zeiss CMMs [applications to drive the machine and write "measuring routines" was written in HPL on 9000 series "calculators"], an Italian CMM made by DEA with a DEC pdp-11 with 16k of 12 bit core [A C64 had more computing power]... [the measuring app was loaded via paper tape and output was either via DECWriter and/or punch tape]. I got to write an app to read data punch tapes on a Model 43 Teletype Paper tape reader and convert them to an ASCII txt file on a IBM-PC XT

      In the mid 80's they upgraded the DEA to use an HP computer that ran HP Rocky Mountain Basic... we did not have anything networked-- it was all sneaker net so I had to write an app for that HP to do a matrix coordinate rotation [from raw coordinate system to measured coordinate system] on the recorded measurements and then output them as a text file to a 5 1/4 inch floppy disk. The disk was walked over to the IBM PC-XT which then read the HP sector formatted disk using a commercial app and written to the IBM's "massive" 10 Mb disk. We then either plotted the data or wrote it to a floppy and delivered it to the Stress engineers... As I understand it that app lasted 9 years without a revision [long after I left]. I also wrote a plotter app that drove an 8 pen HP IEEE-488 Bus Plotter

      Languages? MS / IBM compiled basic, HPL, early on we had a time-share plotter app written for us in Fortran, Turbo Pascal [which is what I used to write most of the utility apps for PC because it was cheap and fast]. We also delved into HP calculator programs [HP11 and HP-67].

      I once got to go up to the Hill for a static firing of a set of Atlas engines [three engine set] at 3/4 of a mile away the engines sonic waves prevented me from catching a breath while the engines were firing...an F-1 has about 10 mtimes the thrust as an Atlas Set.

      Oh the stories...The memories...

    20. Re:Oh man... by flyneye · · Score: 1

      Wish I could mount a rocket on my Saturn SL1...

      --
      *Repent!Quit Your Job!Slack Off!The World Ends Tomorrow and You May Die!
    21. Re:Oh man... by AmiMoJo · · Score: 1

      We are trying to move away from having a small number of very large and complex engines to having lots of smaller and simpler ones. The Russians developed some excellent engines for their moon programme, but the will to continue development after Apollo landed just wasn't there. The basic design was sound though.

      Having smaller engines is not only cheaper but also safer (a few can fail and you are still okay, but losing more than one large engine could be fatal), and more versatile. You have more flexibility with your stages and they can be more easily re-started for missions that require it.

      The F1 is am amazing machine, but was very much a case of choosing the fastest way to get the moon rather than the most flexible and most generally useful.

      --
      const int one = 65536; (Silvermoon, Texture.cs)
      SJW, n: "Someone I don't like, and by the way I'm a fuckwit" - AC
    22. Re:Oh man... by Anonymous Coward · · Score: 0

      I still think NASA is taking the wrong approach about going beyond orbit. Why do we need to get 130 Metric tons into orbit on ONE lift?????

      We need to be looking forward and thinking of a modular inter-planetary craft. Take the biggest cylinder that the biggest rocket today can launch to LEO and use that as the base module. Launch a collection of those into LEO and join them together. Put some kind of power plant in one and attach some propulsion system.

      Unless they use a fast propulsion system, going to Mars is 6-9 months, I would want a little bigger of a craft that a single 130 metic ton craft.

      NASA could have a simple Craft in orbit for testing in a few years. Fly out of orbit and back, then to a Lagrange and back, then try around the moon and back. All the while coming back to the ISS and using standard LEO rocket launches to get to and from the ISS.

    23. Re:Oh man... by Martin+Blank · · Score: 1

      Cost is the main factor. As it now stands, the support required for the launch of a 130t payload is not very different from launching a 30t payload.

      But that 130t payload also gives a lot of flexibility. If it can get 130t to LEO, it can get something like a third of that to GEO. Then again, the loss of one launcher also means the loss of a lot more payload in one shot.

      --
      You can never go home again... but I guess you can shop there.
    24. Re:Oh man... by DerekLyons · · Score: 1

      Nope, not a troll, just stone cold fact. When someone rejects an argument out of hand and without demonstrating a rational basis for doing so, he's clueless.

    25. Re:Oh man... by Rennt · · Score: 1

      My favorite example is the A-10, they are shooting for 80 years out of that airframe. And it's still an impressive machine.

    26. Re:Oh man... by RaceProUK · · Score: 1

      Wait, how is the parent flamebait? Mods, to arms!

      --
      No colour or religion ever stopped the bullet from a gun
    27. Re:Oh man... by obscuro · · Score: 1

      They were still busy in the 70s and 80s. I went to Pomelo Drive for Grade school in the 70s and Chaminade in the 80s. I loved the deep thunder and the huge billowing clouds. I was too young for the Atlas tests. I can't imagine how dramatic those must have been.

      --
      Every rule has more than one consequence.
    28. Re:Oh man... by Anonymous Coward · · Score: 0

      I used to be a NASA rocket scientist so I know this first hand. After the Space Shuttle blew up Congress wanted to go back to the Saturn V and the F1. NASA responded we cannot because we threw away the drawings (no CAD back then) and told the contractors to scrap the tooling. The engineers on this program are long retired. I used to work for the guy that designed the welding system that built the F1.Arthur Rudolph the German Project Manager was deported to Canada.

      I say do away with manned space fligh as it is a waste and an embarassmentt. I would not let those retards have a potato guyn.

  2. Total n00b here by Anonymous Coward · · Score: 2, Interesting

    Is there any reason we shouldn't recycle designs when it comes to rocket engines? Of course (maybe?) we could use modern tools to help improve efficiency but is there anything to gain by starting from scratch?

    I really wish I understood more about rocketry and satellites :/

    1. Re:Total n00b here by PPH · · Score: 4, Interesting

      Who is hauling all of our astronauts back and forth to the ISS right now? How old is their design?

      There is a lot to be said for refining stable designs instead of starting over with a clean sheet of paper, back at the bottom of the learning curve.

      I really wish I understood more about rocketry and satellites :/

      This is true in many other fields as well. I really wish NASA understood more about rocketry and satellites.

      --
      Have gnu, will travel.
    2. Re:Total n00b here by Baloroth · · Score: 4, Interesting

      Is there any reason we shouldn't recycle designs when it comes to rocket engines? Of course (maybe?) we could use modern tools to help improve efficiency but is there anything to gain by starting from scratch?

      Unless you have some new form of rocket fuel or someone discovers a radical new design for an engine that improves efficiency, not really. Rockets are a pretty well established field: starting from scratch doesn't really happen. Not only would it add a ton of testing and design time (which costs quite a lot of money), but you aren't really even sure it would work any better. Rockets are, well, rockets. Ignite propellant, make sure it heads out the back. Thats a gross oversimplification, of course, but they aren't like jets that have a ton of thrust-creating parts you can redesign and recreate in different ways (turbojet, ramjet, scramjet, etc.)

      --
      "None can love freedom heartily, but good men; the rest love not freedom, but license." --John Milton
    3. Re:Total n00b here by shinehead · · Score: 1

      The evolutionary approach seems to have benefits in almost every endeavor, at least until the design is developed to highly evolved state. I suppose at that point you apply manufacturing engineering to wring out the cost. I've always felt that the space program wanted Formula One racecars for their rockets when a dumptruck approach might have been better. Lastly, why couldn't they build a huge engine and de rate it to obtain reliability?

    4. Re:Total n00b here by nojayuk · · Score: 4, Informative

      The F-1 is actually quite crude by today's standards. It's not throttleable so the acceleration curve for a Saturn-V launch started off slow and picked up to about 4-Gs as the first stage's fuel ran out which beat up the crew somewhat. The Shuttle in comparison never exceeded 3-G. The F-1 has a low chamber pressure (70 bar) and reduced Isp (263 seconds) compared to modern LOX/RP-1 engines like the throttleable RD-180 (266 bar and 311 seconds) as used on the Atlas launcher.

    5. Re:Total n00b here by EdgePenguin · · Score: 3, Informative
      Let me go further. The RD-180 is actually a 2 thrust chamber version of a 4 trust chamber engine, the RD-170. The newer version of the RD-170, the RD-171 - is currently in service as the first stage engine of the Zenit rocket and critically produces more thrust than an F-1 engine does.

      If NASA wants to break out the most powerful liquid fuel engines ever built, they need to go to Russia with their checkbooks again. At the end of the cold war, the Soviets ended up way ahead in liquid engine design - which can be attested to by the fact that many modern US launchers use Russian engines (RD-180, NK-33 soon) or designs which draw on Russian expertise (RS-68)

    6. Re:Total n00b here by Anonymous Coward · · Score: 0

      Is there any reason we shouldn't recycle designs when it comes to rocket engines? Of course (maybe?) we could use modern tools to help improve efficiency but is there anything to gain by starting from scratch?

      Sometimes. For example, instead of being bound to produce a frankenbeast of a design that's limited to certain parameters due to various infrastructural limitations and constructed across the country, we could build a design that is set to a given performance and produce it in one place that's closer to the launch site.

    7. Re:Total n00b here by theshowmecanuck · · Score: 2

      The fact that people have to ride into space on Russian (or Chinese) rockets is less about the technology than the ham fisted planning and management of American politicians, bureaucrats, and NASA administrators. Have you forgotten already that the first privately financed rocket company just had a capsule dock with the space station? A year or so and people will be riding on new rockets. And I doubt anyone started at the bottom of the learning curve. I wouldn't doubt that building a new motor from scratch was a better thing to do. It made sure people didn't get trapped in a mindset of building things in a 1960s way. The old rocket was certainly design constrained by the technology of the era, so why constrain a modern rocket within that old framework? Yeah don't reinvent the wheel. Were that a rocket engine was as simple as a wheel.

      --
      -- I ignore anonymous replies to my comments and postings.
    8. Re:Total n00b here by cheesybagel · · Score: 1

      The RD-171 is a more complex staged combustion engine with many parts which is going to be more expensive to design and produce in the US than a gas generator engine with similar performance to the F-1 would be. That said there is plenty in the F-1 design that could be changed if it was done with today's technology. It makes little sense to slavishly copy the design.

    9. Re:Total n00b here by ppanon · · Score: 1

      Lastly, why couldn't they build a huge engine and de rate it to obtain reliability?

      Because every extra pound of engine adds up to a whole lot of extra pounds of fuel/oxidizer to fly the increased engine weight to the same top altitude (for a given stage the engine is used on). Even more so than with airplaines, a KPI for rockets is thrust/engine weight. The reason is that your rocket's mass*g effectively decreases the force factor in the specific impulse of the rocket.

      --
      Laissez lire, et laissez danser; ces deux amusements ne feront jamais de mal au monde. - Voltaire
    10. Re:Total n00b here by gishzida · · Score: 2

      The problem is that they have stopped being a science agency and become a "management agency"... where the "managers" are not really scientists... they've "outsourced" the brains in the name of "cutting the size of government"...

      the problem with this kind of thing is that instead of science driving the programs it's a bunch of corporate manager types who want to make a profit and career government politicians [I won't call them bureaucrats as these fellows don't serve a useful function whereas the scientists NASA used to employe were considered bureaucrats] ] who make decisions... and then the elected politicians get involved with "pork barrel" considerations...

      And that is why we had a Challenger disaster--- profit seekers and fame seekers decided to let fly when the engineers said don't.

      It's too bad that we've lost the political will to be a space-faring nation. The tail [the aerospace giants] now wags the dog [the science]

    11. Re:Total n00b here by vlm · · Score: 3, Insightful

      Lastly, why couldn't they build a huge engine and de rate it to obtain reliability?

      ppanon's answer is mostly correct, but the main problem is the relationship between reliability and performance is strongly non-linear. Dropping performance by 50% might only increase safety by 0.1%.

      Very crude example using made up numbers is you drop turbopump RPMs by half and run the mixture ridiculously rich so it looks like a candle flame and drop chamber pressure to half what it was. On one side you just zapped maybe 90% of performance, easily meeting that goal. The problem is the turbopump is only about 0.001% more reliable because its still spinning at 50K RPM, the lower chamber pressure and impaired mixture means lower combustion temp means its only dull red instead of bright red, etc.

      A crude /. car analogy is flooring an engine and dyno testing it is pretty hard on the engine, even if you intentionally detune the engine a bit. It fact if you detune it to the point of backfiring and pinging its much worse for it.

      Another issue that no one likes to discuss is the chamber and nozzle acoustic model is designed for a certain set of conditions and flow rate. You kinda have to start over again if you derate. You can run over a wide range if you're willing to trade efficiency, but... You don't want to crank down the injection pressure, resulting in a lower delta p across the injectors, resulting in a screamer or chugger blowing the thing to pieces.

      Then another thing is your exhaust "bell" part of the nozzle is designed for a certain flow rate delta p and exhaust pressure. Drop the pressure enough and you can supposedly get the nozzle to collapse in on itself. Also where the flow separates inside the nozzle has pretty serious thermal and mechanical problems.

      So you need a new set of acoustic tests and probably chamber fixes, and a new injector design, and a new nozzle, probably new turbopumps... So you get to keep ... I donno ... the chamber and mounting arms I guess. It seems a lot faster simpler and cheaper if you have a 100 Kpound thrust engine and you need a 10 Kpound thrust engine to simply sell the 100K for whatever you can get and buy an off the shelf 10K design.

      --
      "Science flies us to the moon. Religion flies us into buildings." - Victor Stenger
    12. Re:Total n00b here by Jeff+DeMaagd · · Score: 1

      The fact that people have to ride into space on Russian (or Chinese) rockets is less about the technology than the ham fisted planning and management of American politicians, bureaucrats, and NASA administrators."

      There's more to that though. NASA previously had difficulties making strong progress on the next manned system while still operating the current one. Nixon cancelled Apollo to spend that operational money to develop the Space Shuttle (even though there were several Saturn Vs to spare), which the US had about 6 or so years between manned programs, exactly like the inter-program lull we have now. The good news is that the unmanned exploration program has still done exceedingly well in those years, and the same right now.

      Soyuz has been handing US astronauts bound for ISS duty since 2005-ish. The commission on Columbia released a finding that the Space Shuttle was an unsafe platform, so the President decided that it was only to be used to complete the ISS according to existing commitments, flying the Space Shuttle to rotate inhabitants didn't make the cut.

    13. Re:Total n00b here by EdgePenguin · · Score: 2

      Staged combustion engines are the most efficient ones you can get - and the Russians are hardly known for making things expensive. As I said, the half sized version of it, the RD-180, serves perfectly well on the Atlas V. The design is one that is well proven by both Private/Ukrainian flights and by US flights. Why would they be produced in the US? RD-180 engines are not (if they are, I'm slightly puzzled as to why they've got Cyrillic letters all over them...)

    14. Re:Total n00b here by Anonymous Coward · · Score: 0

      Bet it'd be cheaper too despite the F1 being one of the most documented engines in history. License the design for manufacturing in the USA if possible.

  3. Rocket engines by Anonymous Coward · · Score: 5, Informative

    This is what I like about rocket engines. A rocket engine designed for a specific load in the 60s and today would have nearly the same design. A modernized F1 is entirely logical.

    And before people complain about rocket engines not advancing at the same rate as microprocessors, let me note that the cost of a rocket is primarily determined by its complexity, not the cost of fuel or the size of the engines. A simple rocket engine (like the F1) that burns kerosene and oxygen is often cheaper than super advanced rocket engines like those on the Space Shuttle.

    1. Re:Rocket engines by TubeSteak · · Score: 5, Interesting

      This is what I like about rocket engines. A rocket engine designed for a specific load in the 60s and today would have nearly the same design. A modernized F1 is entirely logical.

      There have been plenty of advances since the 60s, especially in the materials sciences,
      it's just that no one but NASA would spend the money on R&D.

      Even the private space companies of today are building their engines using cast-offs from the NASA programs of old.
      They look for parts in a California junkyard called Norton Sales, where used NASA parts go to die.
      You're not going to find cheap rocket grade titanium turbopumps anywhere else in the world.

      Heck, even NASA has had to go scrounging through that junkyard,
      because they've destroyed the blueprints for so many old pieces of equipment,
      that the only way to rebuild them is to find an original and reverse engineer it.

      --
      [Fuck Beta]
      o0t!
    2. Re:Rocket engines by PNutts · · Score: 0, Troll

      This is what I like about rocket engines. A rocket engine designed for a specific load in the 60s and today would have nearly the same design. A modernized F1 is entirely logical.

      There have been plenty of advances since the 60s, especially in the materials sciences,
      it's just that no one but NASA would spend the money on R&D.

      Even the private space companies of today are building their engines using cast-offs from the NASA programs of old.
      They look for parts in a California junkyard called Norton Sales, where used NASA parts go to die.
      You're not going to find cheap rocket grade titanium turbopumps anywhere else in the world.

      Heck, even NASA has had to go scrounging through that junkyard,
      because they've destroyed the blueprints for so many old pieces of equipment,
      that the only way to rebuild them is to find an original and reverse engineer it.

      Your beautiful words,
      Almost seem intelligent,
      But are really just shit.

      - Burma Shave.

    3. Re:Rocket engines by Teancum · · Score: 1

      You are talking two different things here with this "junk yard" called Norton Sales.

      First, there are hobby rocket builders who scrounge through that junk yard for parts because they are building one-off specialized rockets on an extreme budget and are largely garage tinkerers anyway. I know guys who have done that for automobiles, tractors, and other kinds of equipment too for largely the same reason.

      As for NASA going through that place to dig up parts, they are either looking for engineering samples to act as a comparison when trying to rebuild old designs, or perhaps they are desperate in terms of looking for a specialized part that has been discontinued from the original equipment manufacturer yet functioning equipment still needs those parts for some reason. Rather than paying a machinist or that original company a huge pile of money for a production run of just one part or a very low number (yes, that sometimes does happen both in NASA and the military for many items), searching through a junk yard like this would be hugely cheaper.

      It isn't that people are too stupid today to be able to build this stuff, but that it is simply cheaper to get stuff from a junk yard. Cheaper by orders of magnitude I should add.... as long as you can even find what you are looking for. If they can't find it at that junk yard, they simply are forced to try and make it from scratch instead at considerable cost. Sometimes a production run of one item can be nearly the same cost as producing thousands of that part too.

    4. Re:Rocket engines by TubeSteak · · Score: 3, Informative

      SpaceX does not use second-hand parts from Norton.

      http://articles.latimes.com/2007/mar/25/science/sci-junkyard25

      Norton has supplied parts to most of the new space rocketeers, including Burt Rutan's Mojave, Calif.-based Scaled Composites, which built the first privately funded manned craft to reach the edge of space, and Elon Musk's Space Exploration Technologies Corp. [aka SpaceX] in El Segundo, which launched the first privately funded craft to reach low-Earth orbit this month, though it malfunctioned after half an orbit.

      These private companies can build their 'cheap' rockets because they're bootstrapping with the results of hundreds of millions in 60s NASA cast offs.

      --
      [Fuck Beta]
      o0t!
    5. Re:Rocket engines by cheesybagel · · Score: 3, Insightful

      They may have bought some parts to inspect them. However I doubt they are using the parts in actual flight articles. SpaceX uses 9 engines in its Falcon 9 rocket. Even if there were enough parts with good enough performance characteristics they would quickly run out of stock. As for Burt Rutan and SpaceShipOne I doubt they have any hybrid rocket engines in that junkyard...

    6. Re:Rocket engines by Glock27 · · Score: 2

      These private companies can build their 'cheap' rockets because they're bootstrapping with the results of hundreds of millions in 60s NASA cast offs.

      Not "cast offs", but where you're right is that SpaceX in particular leveraged the research done in the 60's to settle on a kerosene+LOX design.

      That simply made sense, as opposed to, say, solid boosters. A lot more environmentally friendly as well.

      My opinion is that NASA needs to largely get out of the spacecraft design business, they're far too inefficient. Let them supply "big picture" design goals, then let efficient, innovative, hungry companies like SpaceX compete to satisfy them.

      I can't wait to see the first "assembled in orbit, nuclear powered interplanetary vehicles" (and lunar transports) start to take shape.

      The first country to perfect nuclear interplanetary spacecraft will own the Solar System. I hope it's not China.

      --
      Galileo: "The Earth revolves around the Sun!"
      Score: -1 100% Flamebait
  4. Minor nitpick. by sconeu · · Score: 4, Informative

    The F-1 wasn't a booster, it was an engine. The booster stage using the F-1 was the S-1C.

    --
    General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
  5. Seems like a tremendous waste by Hadlock · · Score: 2, Insightful

    The F1 was designed on blackboards and drafting tables. A "modern" F1 is only going to be similar in size - it'd have to be a clean sheet design, the facilities that built the F1 are long gone at this point. Why even study redesigning the F1? This seems like a tremendous waste. Of course it's going to be a clean sheet, computer drafted design.
     
    Money for a study on a stone age rocket design* seems like a federal handout, nothing more.
     
    *although the Saturn V's anti-oscillation system is pretty inspired... for it's time

    --
    moox. for a new generation.
    1. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 5, Insightful

      The F1 is a perfect example of a big dumb booster. It is cheap, especially so if you mass produce it. The Space Shuttle Main Engines are examples of non-stone age rocket design that uses advanced materials and tries to be reusable. Guess which one is cheaper to operate?

      Here's a hint: the Russians like big dumb boosters for a reason.

    2. Re:Seems like a tremendous waste by mjr167 · · Score: 4, Insightful

      Because it is good engineering practice to know what has been done before? We do not build things in a vacuum, but rather we build upon the successes and failures of others. By knowing what has failed in the past we can avoid those traps in the future and by knowing what has worked we can have a firm foundation upon which to improve.

    3. Re:Seems like a tremendous waste by bmo · · Score: 3, Interesting

      >Why even study redesigning the F1?

      Because it's the largest liquid fueled engine in existence, and it works. Nobody has anything comparable to it, not even the Russians. There's a reason why the Russians use so many smaller engines.

      Why design from scratch when you have known working prototypes? Only fools reinvent the wheel. Indeed, going back and redesigning the "shower head" fuel injection plate would be just nuts as it works fabulously.

      A lighter, more efficient F-1A would be really, really sweet.

      --
      BMO

    4. Re:Seems like a tremendous waste by 0123456 · · Score: 1

      By knowing what has failed in the past we can avoid those traps in the future and by knowing what has worked we can have a firm foundation upon which to improve.

      Except we know Saturn V failed as an economical method of launching things into space... yet NASA are building a modern version with the same problems (too big, not reusable, no customer other than NASA, too low a flight rate, etc, etc).

    5. Re:Seems like a tremendous waste by sandytaru · · Score: 1

      Actually, the original building at Cape Canaveral in which the Saturn V was built was repurposed for the space shuttle (which took up a fraction of the space.) It can easily be repurposed again.

      --
      Occasionally living proof of the Ballmer peak.
    6. Re:Seems like a tremendous waste by Nimey · · Score: 1

      Saturn V wasn't used to boost large payloads to LEO with the exception of Skylab. False comparison.

      One supposes that it might be economical if it's properly mass produced and not required to be man-rated.

      --
      Hail Eris, full of mischief...

      E pluribus sanguinem
    7. Re:Seems like a tremendous waste by davester666 · · Score: 2

      Politics and NASA say hello. 'Economical' will not play a role in this project.

      --
      Sleep your way to a whiter smile...date a dentist!
    8. Re:Seems like a tremendous waste by Macrat · · Score: 1

      Money for a study on a stone age rocket design* seems like a federal handout, nothing more.

      Exactly. NASA's future is paying companies like SpaceX to handle payloads.

      This is nothing more than gov't pork expenses.

    9. Re:Seems like a tremendous waste by 0123456 · · Score: 3, Interesting

      Saturn V wasn't used to boost large payloads to LEO with the exception of Skylab. False comparison.

      Uh, what do you think an Apollo mission was?

      One supposes that it might be economical if it's properly mass produced and not required to be man-rated.

      Yes. Now perhaps you can explain where all these 150 ton payloads are that need a mass-produced heavy lifter that will, at least initially, cost billions of dollars per flight?

      Hint: they don't exist. There's no budgeted payload for this launcher.

    10. Re:Seems like a tremendous waste by sjames · · Score: 1

      We do not know that. It was never tried.

    11. Re:Seems like a tremendous waste by LWATCDR · · Score: 4, Informative

      The Saturn V was the most cost efficient heavy lift launch vehicle to fly. The cost per lb to LEO is only $9,915 which is cheaper than the Atlas V or the Ariane V. The Falcon 9 does beat it but then you have the other metric.
      Saturn V 118,000 kg to LEO
      Falcon 9 10,450 kg to LEO
      Falcon Heavy 53,000 kg to LEO
      And that was with 1960s support systems. NASA was working on an improved Saturn 5 and tested F-1a engines that where ligher, had more thrust, and a higher specific impulse than the ones flown in the Saturn 5. Take the F-1a and add modern electronics for control and build the stage using modern methods and materials and you could drop the costs.
      What I fear is this is just a tactic to do nothing. If you keep studying the new launch system and changing it you will never have to build it. If you do not build it can never fail so you can never be blamed. As a politico it works well you can spend a ton of money doing studies to save money by finding a better way and when you have spent a lot you can kill the project because "they" have wasted all this money and have not built a thing.
       

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    12. Re:Seems like a tremendous waste by Sir+Holo · · Score: 2, Informative

      Rocket design is stone-aged.

      The US standard railroad gauge (distance between the rails) is 4 feet, 8.5 inches. That's an odd number! Why was that gauge used? Well, because that's the way they built them in England, and English expatriates designed the US railroads. The first rail lines were built by the same people who built the pre-railroad tramways, and that's the gauge they used. The people who built the tramways used the same jigs and tools that they had used for building wagons, which used that wheel spacing, because that was the spacing of wheel ruts in ancient English roads.

      Who built those old rutted roads? Imperial Rome built the first long distance roads in Europe for their legions. Those roads have been used ever since. Roman war chariots formed the initial ruts, which everyone else had to match or risk destroying their wagon wheels. Because those chariots were made for Imperial Rome, they were all alike in the matter of wheel spacing.

      Therefore, the United States standard railroad gauge of 4 feet, 8.5 inches is derived from the original specifications for an Imperial Roman war chariot. Bureaucracies live forever. So the next time you are handed a specification/procedure/process and wonder 'What horse's ass came up with this?', you may be exactly right. Imperial Roman army chariots were made just wide enough to accommodate the rear ends of two war horses. (Two horses' asses.)

      Now, how does this apply to space travel?: When you see a Space Shuttle sitting on its launch pad, there are two big booster rockets attached to the sides of the main fuel tank. These are solid rocket boosters, or SRBs. The SRBs are made by Thiokol at their factory inUtah. The engineers who designed the SRBs would have preferred to make them a bit fatter, but the SRBs had to be shipped by train from the factory to the launch site. The railroad line from the factory happens to run through a tunnel in the mountains, and the SRBs had to fit through that tunnel. The tunnel is slightly wider than the railroad track, and the railroad track, as you now know, is about as wide as two horses' behinds.

      So, a major Space Shuttle design feature of what is arguably the world's most advanced transportation system was determined over two thousand years ago by the width of a horse's ass. And you thought being a horse's ass wasn't important? Ancient horse's asses control almost everything...

      Addendum: The average width of stone-age roadway ruts was about 4 feet 8 inches, the width of two horses' asses, as they pulled a sled. Thus, some of the major dimensions of our space vehicle components are based on stone-age technology!

    13. Re:Seems like a tremendous waste by 0123456 · · Score: 1

      The Saturn V was the most cost efficient heavy lift launch vehicle to fly.

      That's like saying the new Ferrari will be the most cost-efficient Ferrari ever built. It's still expensive.

      And, I suspect those numbers don't include the development cost, whereas SpaceX actually have to pay for developing their launcher as well as flying it. I did some quick sums based on numbers I found on the web including development costs and got a number closer to $20,000 a pound.

    14. Re:Seems like a tremendous waste by savuporo · · Score: 3, Insightful

      Because it's the largest liquid fueled engine in existence, and it works. Nobody has anything comparable to it, not even the Russians.

      Why let facts get in the way of perfectly good chest thumping, huh ? RD-170, the engine that lifted Polyus and Buran with Energia rocket, and its derivative is powering Zenit rockets today, has higher thrust than F-1 had ( past tense )

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    15. Re:Seems like a tremendous waste by petsounds · · Score: 4, Informative

      What's up, snopes. Nice tall tale, though.

    16. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      Except, no.

      http://www.snopes.com/history/american/gauge.asp

    17. Re:Seems like a tremendous waste by prehistoricman5 · · Score: 1

      We all know that's nothing but an urban legend.

      --
      Fuck Beta
    18. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      Thank you for that entertaining and well-written post.

    19. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      The F-1 was designed with the help of IBM 704 computers. To think otherwise is to ignore history, and when exactly do you think computers started being used? When you started using them? Computers have been around for decades.

    20. Re:Seems like a tremendous waste by Digicrat · · Score: 1

      Actually, the original building at Cape Canaveral in which the Saturn V was assembled was repurposed for the space shuttle (which took up a fraction of the space.) It can easily be repurposed again.

      FTFY. Each stage of the Saturn V was built and tested elsewhere before being shipped to Kennedy for final assembly.

    21. Re:Seems like a tremendous waste by Ol+Olsoc · · Score: 1

      Saturn V wasn't used to boost large payloads to LEO with the exception of Skylab. False comparison.

      Uh, what do you think an Apollo mission was?

      To the Moon, Alice! to the Moon!

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    22. Re:Seems like a tremendous waste by tmosley · · Score: 2

      I have to ask: did you adjust your figures for inflation?

    23. Re:Seems like a tremendous waste by Ol+Olsoc · · Score: 2

      The Saturn V was the most cost efficient heavy lift launch vehicle to fly.

      That's like saying the new Ferrari will be the most cost-efficient Ferrari ever built. It's still expensive.

      Think of it like a train. Locomotives are expensive, and they burn a lot of fuel. But they carry huge amounts of freight in those mile long trains. Each pound of freight is shipped incredibly cheaply.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    24. Re:Seems like a tremendous waste by camperdave · · Score: 1

      Wrong - By thousands of years. Rome was a late iron age culture, dating back to about 500BC. The iron age itself began about 1300 BC. It was preceded by the Bronze age, which began about 3000 BC. The stone age was before that. So Roman chariot design is closer in years to modern technology than it is to stone age tech.

      --
      When our name is on the back of your car, we're behind you all the way!
    25. Re:Seems like a tremendous waste by bmo · · Score: 4, Interesting

      You're forgetting the F-1A.

      The F1 was designed in 1959. The F1A is an improved version, which is what we're really talking about.

      And the F1A has these stats:

      Rocketdyne Lox/Kerosene rocket engine. 9189.6 kN. Study 1968. Designed for booster applications. Gas generator, pump-fed. Isp=310s.

      Thrust (sl): 8,003.800 kN (1,799,326 lbf). Thrust (sl): 816,178 kgf. Engine: 8,098 kg (17,853 lb). Chamber Pressure: 70.00 bar. Area Ratio: 16. Propellant Formulation: Lox/RP-1. Thrust to Weight Ratio: 115.71.

      Status: Study 1968.
      Unfuelled mass: 8,098 kg (17,853 lb).
      Height: 5.48 m (17.97 ft).
      Diameter: 3.61 m (11.84 ft).
      Thrust: 9,189.60 kN (2,065,904 lbf).
      Specific impulse: 310 s.
      Specific impulse sea level: 270 s.
      Burn time: 158 s.
      First Launch: 1967.

      Source: http://www.astronautix.com/engines/f1a.htm

      The RD-170 has these stats:

      Chambers: 4. Thrust (sl): 7,550.000 kN (1,697,300 lbf). Thrust (sl): 769,876 kgf. Engine: 9,750 kg (21,490 lb). Chamber Pressure: 245.00 bar. Area Ratio: 36.87. Thrust to Weight Ratio: 82.66. Oxidizer to Fuel Ratio: 2.6.

      AKA: 11D520.
      Status: Development ended 1976.
      Unfuelled mass: 9,750 kg (21,490 lb).
      Height: 3.78 m (12.40 ft).
      Diameter: 4.02 m (13.17 ft).
      Thrust: 7,903.00 kN (1,776,665 lbf).
      Specific impulse: 337 s.
      Specific impulse sea level: 309 s.
      Burn time: 150 s.
      First Launch: 1981-93.
      Number: 12 .

      Source: http://www.astronautix.com/engines/rd170.htm

      Chest thumping? I think not.

      --
      BMO

    26. Re:Seems like a tremendous waste by Ol+Olsoc · · Score: 1

      So, a major Space Shuttle design feature of what is arguably the world's most advanced transportation system was determined over two thousand years ago by the width of a horse's ass. And you thought being a horse's ass wasn't important? Ancient horse's asses control almost everything...

      Cymbal crash!

      I do like the joke and story for sure. I see the connections as a very cool thing, both a connection and a interesting engineering problem. Similar to the way the 200 inch Hale telescope. Before they settled on the size, they had to measure the available height of every bridge it would have to go under on the way from New York to California. Add that to the railroad car it was mounted on and the casing, and there was the maximum mirror size they could practically make without sending it by ocean. But there was still the matter of the road going to mount Palomar.

      I really do love engineering, especially when it all comes together and works.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    27. Re:Seems like a tremendous waste by drgould · · Score: 1

      The F1 was designed on blackboards and drafting tables. A "modern" F1 is only going to be similar in size - it'd have to be a clean sheet design, the facilities that built the F1 are long gone at this point. Why even study redesigning the F1? This seems like a tremendous waste. Of course it's going to be a clean sheet, computer drafted design.

      Some designs stand the test of time.

      The RL-10 is another Apollo era rocket engine that's still in production.

    28. Re:Seems like a tremendous waste by savuporo · · Score: 2, Informative

      BS, it was a study, a never built paper engine. Doesn't jive with "Because it's the largest liquid fueled engine in existence, and it works." It never existed. RD-171 is in active service right now.

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    29. Re:Seems like a tremendous waste by fnj · · Score: 2

      Snopes has gradually but comprehensively turned into a horse's ass. They will deny ANY story you give them. In the stupid article you link to, they as much as say, yes, the story is essentially true, we can't verify every excruciating detail 100% so we're going to say something with is essentially an excellent exposition is "FALSE", just because we make it our business to claim EVERYTHING is false.

    30. Re:Seems like a tremendous waste by khallow · · Score: 1

      One supposes that it might be economical if it's properly mass produced and not required to be man-rated.

      It's safe to say that like all the other parts of the SLS, it will not be properly mass produced.

    31. Re:Seems like a tremendous waste by bmo · · Score: 2

      >BS, it was a study, a never built paper engine.

      >first launch: 1967

      Yup. Never built.

      Even if all it did was sit in the test stand and get tested, it's a real engine.

      Get stuffed.

      --
      BMO

    32. Re:Seems like a tremendous waste by bmo · · Score: 1
    33. Re:Seems like a tremendous waste by LWATCDR · · Score: 3, Informative

      Yes

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    34. Re:Seems like a tremendous waste by LWATCDR · · Score: 1

      No it is like saying that X is the most cost-efficient semi-truck ever made and someone saying my Prius gets better mileage. That is all fine and good except that a Prius can not haul a 10,000 kg across country.
      The Falcon Heavy has not flown yet so it's dev costs are still unknown. It will probably be cheaper but it can not put 100,000kg in LEO.
      And yes modern design, testing, construction methods, and materials well means that a new F-1a should be better than even the F-1a that was tested in the late 60s. A new booster using them can also be cheaper and better than the Saturn V first stage.
      It is a real shame that F-1 and J-2 where allowed to become dead ends. An improved Saturn 1b using a single F-1a for it's first stage would have made a good heavy lift launcher with a larger payload than the Titan IIIC. The improved Saturn V could have been used to launch large parts for a larger space station than SkyLab and the improved Saturn 1b could have launched crews and supplies.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
    35. Re:Seems like a tremendous waste by savuporo · · Score: 1

      It never launched on anything, i'm not sure what you are on about. Couple of crates of parts at PWR don't constitute a "largest liquid fueled engine in existence".
      For things that never left the test stand, there were RD-270 and all sorts of other ludicrous attempts.

      Again, RD-171 is flying, today, and it is more powerful than anything else ever flown.

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    36. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      For "it is" time?

    37. Re:Seems like a tremendous waste by NemoinSpace · · Score: 1

      Except we know Saturn V failed as an economical method of launching things into space...

      ...except it failed less than anything else ever tried. So, uh, ok.
      Now if you mean it failed economically, as in Congress had other plans with our tax dollars, then maybe.
      Reusable? You learned little from Apollo and learned nothing from the Shuttle. If you have discovered a cheaper way to burn kerosine in rockets that deliver maximum payload, you are going to be rich. (they would have built a bigger Saturn V if they could have)

    38. Re:Seems like a tremendous waste by riverat1 · · Score: 2

      That would be why it's called the Vehicle Assembly Building.

    39. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      wow - such ignorance. Go read the f1 pdf and come back and say that. Those were real engineers. I don't think we have "modern" engineers that would be up to the task of a clean sheet design since we have lost most of the hard earned knowledge they had back then. Sure there have been some materials improvements but the F1 was a design that worked and produced an enormous amount of thrust...

    40. Re:Seems like a tremendous waste by Teancum · · Score: 2

      The Saturn V was originally designed to be used for a long, long time with production runs numbering in the hundreds if not thousands of copies. The test stand set up along with the part supplier chains were originally told that the Moon landings were only going to be the warm up to a much more aggressive manned spaceflight program. Unfortunately Congress choose not to go that route and instead cut the program altogether in favor of a design which came from another part of NASA. That is what gave us the Space Shuttle.

      I still argue that the Saturn V could have sent into space just as much tonnage into orbit and perhaps even more astronauts, as well as preserving at least in theory the capability of returning to the Moon and would have even kept orbital space stations operational (including more missions to the original Skylab) for a price far cheaper than the Shuttle program. That is looking in hind sight, but your point about the Saturn V is pretty spot on.

      It is also interesting to note that part of that effort to develop the Saturn V is still in use today... by Space X with their McGregor, Texas facility that is being used to test the Merlin engines used on the Falcon rockets. The test stands being used were developed to work with the F1 engines, and the work flow patterns designed by Werner Von Braun have simply been repurposed by Elon Musk for the Merlin engine processing. In other words, the cheap prices that you see with the Falcon 9 owes at least part of its heritage to the original F1 engines that were developed so many years ago.

    41. Re:Seems like a tremendous waste by Teancum · · Score: 2

      The original building at Cape Canaveral (the Vehicle Assembly Building) was designed to house the successor to the Saturn V, which was going to be an even larger rocket. Once the Saturn V was basically proving itself along with things like the original F1 engine being able to produce the desired thrust, plans for that follow up rocket were dropped.

      There are a total of four bays in the Vehicle Assembly Building, two of which are currently being refit for the SLS program including the mobile launcher pad that was used for both the Saturn V and Space Shuttle launches. The other two bays have been in theory offered to other businesses that may want to have a similar kind of capability or for any future projects that NASA may want to put together that goes beyond the SLS project.

    42. Re:Seems like a tremendous waste by dbIII · · Score: 1

      There's even bullshit on there like the "motorbikes pollute more than SUVs" rubbish. Even if such a monster bike existed and you were trying to sell it new then the emissions regulations (much tighter for bikes than SUVs) wouldn't let you sell it.
      Snopes is pretty well abandoned, misleading and pointless.

    43. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      Formula 1 is switching to v6 1.6 liter turbo engines in 2014. That should be lighter and that was what I was thinking about (very puzzled) before I knew what this F1 engine actually was :-)

    44. Re:Seems like a tremendous waste by WindBourne · · Score: 1

      Not entirely. My guess is that NASA is handing out money for studies to keep this going before getting to the real money. If they can prolong this, when SpaceX comes out with a successful FH, then NASA heads can make the argument that SLS is a waste of money and kill it. I would not be surprised to see SpaceX announce right after the FH success about the Merlin-2 that they are developing.

      --
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    45. Re:Seems like a tremendous waste by WindBourne · · Score: 1

      So will fox, Pravda, National Enquiror, and Xinhua. And they do it all without facts.

      Personally, I will trust snopes long before trusting some of the BS around the world.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    46. Re:Seems like a tremendous waste by cheesybagel · · Score: 2

      The SSME was not the big issue in Space Shuttle costs. The problem were the non-reusable parts and the high cost of maintenance of the vehicle between flights. The major cost items were the external tank, solids, refueling the hypergolic fuel used in the OMS/RCS, TPS maintenance. The SSMEs were pretty down the list and there were programs in the pipeline to further reduce engine marginal costs.

    47. Re:Seems like a tremendous waste by DerekLyons · · Score: 1

      Here's a hint: the Russians like big dumb boosters for a reason.

      When you have difficulty building big non-dumb boosters, you learn real fast to love the dumb ones. Seriously, the Soviet's did build some high tech stuff, but big advanced boosters always proved problematical. On top of that, the Soviets had an intensely political procurement process... (It makes that in the West looks positively sane by comparison) which made the whole affair even more difficult, as space efforts always ended up taking a back seat to the military.
       
      The Russians on the other hand love what they inherited from the Soviet's - because they've never really had the money to do much else, and don't have much choice.

    48. Re:Seems like a tremendous waste by sahonen · · Score: 5, Insightful

      Saturn V wasn't used to boost large payloads to LEO

      On a lunar mission, the Saturn V would put the Command and Service Module, the Lunar Module, and a booster with enough fuel to put them both on a lunar trajectory, into LEO. That's a pretty damn large payload, the largest payload to LEO of any single vehicle ever produced. The fact that the payload eventually boosted itself the rest of the way to the moon isn't relevant to the vehicle's ability to put mass into LEO.

      It is the nature of rocketry that any small mass in a high orbit will tend to get there by going through a period in which it is a large mass in a lower orbit. In a staged rocket, it is useful to think of each stage as its own vehicle, with all of the stages above it as its payload which it is capable of delivering to a certain point.

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    49. Re:Seems like a tremendous waste by sahonen · · Score: 3, Informative

      LEO is on the way to the moon. The Saturn V delivered to LEO a payload consisting of the Command and Service Module, the Lunar Module, and a booster with enough fuel to put all of the above on a lunar trajectory. You could replace all of this with any arbitrary payload of equal weight and the Saturn V would be able to put it into LEO.

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    50. Re:Seems like a tremendous waste by ppanon · · Score: 1

      Does that factor in inflation? Because $20,000 circa 1970 != $20,000 in 2012 for purchasing power.

      --
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    51. Re:Seems like a tremendous waste by Z00L00K · · Score: 2

      And the space shuttle was designed to carry out military missions as well as civilian which is one reason why it was so large. Some missions could have been done with a smaller vessel and to a lower cost.

      The beauty of the shuttle was that it could land as an ordinary aircraft and it therefore allowed for some alternative options while when you have a capsule you will just be a passenger and no control over if you drop down on a cow or a dolphin when you come down.

      --
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    52. Re:Seems like a tremendous waste by ppanon · · Score: 2

      Just because IBM 704s may have been used to help with the design of F1 engine operations through simulation of certain functions (perhaps for multi-engine vibrational stability control?) doesn't turn those 701s into personal CAD stations. Since CADD systems didn't get mainstream deployment until the early 80s when microprocessors made "personal" computers possible, it would indeed be surprising if the original drawing of the F1 parts were done on anything other than drafting tables.

      --
      Laissez lire, et laissez danser; ces deux amusements ne feront jamais de mal au monde. - Voltaire
    53. Re:Seems like a tremendous waste by Z00L00K · · Score: 1

      The RD170 is actually not entirely comparable since it's a four chamber solution. It also have a sibling the RD180. However one of the interesting factors with them is that the construction they have is a closed system where the exhaust from driving the pumps is injected into the chamber and provides additional thrust.

      The RD180 engines have seen use in the Atlas rockets since they are more efficient than the engines originally designed for the Atlas rockets.

      But from my point of view I think that they should look at the experience and technology used both in the RD170/171/180 and in the F1A engines to be able to get the best of both worlds. Add to it the knowledge gained in materials that have improved since the 60's and 70's and the improvement in computer power that allows us to make more complex calculations.

      --
      If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.
    54. Re:Seems like a tremendous waste by EmagGeek · · Score: 1

      Standard American railroad gauge is precisely 1.4351 meters.

      Please use proper units.

    55. Re:Seems like a tremendous waste by mpe · · Score: 1

      And the space shuttle was designed to carry out military missions as well as civilian which is one reason why it was so large. Some missions could have been done with a smaller vessel and to a lower cost.

      IIRC the size of the shuttle was part of the reason for requiring such a physically delicate heatshield.

      The beauty of the shuttle was that it could land as an ordinary aircraft

      Ordinary aircraft generally don't block the runway on landing. Landing it at a regular airport would be hugely disruptive.

    56. Re:Seems like a tremendous waste by Nimey · · Score: 0

      /Yes/, but the point is that Saturn V was expected to get stuff /beyond/ LEO, therefore it had components to let it get stuff to the moon, therefore increasing the expense.

      Furrfu.

      --
      Hail Eris, full of mischief...

      E pluribus sanguinem
    57. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      Actually, 0.28535353535354 Rods. Or, if you prefer, approximately 2.87 cubits.

    58. Re:Seems like a tremendous waste by Anonymous Coward · · Score: 0

      But it;s the sweeping "no computers" statement that drives me absolutely crazy. Do you also say the Saturn V didn't use computers because there were no touch screens on the LEM? There were computers EVERYWHERE by the early '60s, and saying there were NO computers is just ignoring history and insulting to the engineers and technicians that created the computers of the era.

    59. Re:Seems like a tremendous waste by tmosley · · Score: 1

      Good, I feel much better. I always wondered why we didn't keep using Apollo as a launch platform. It being very, very expensive seemed likely, but I guess it really was just politics.

    60. Re:Seems like a tremendous waste by sahonen · · Score: 1

      No, the point is that the Saturn V was expected to get a CSM and a LEM sitting on top of an S-IVB into LEO. The S-IVB was expected to get the CSM and LEM to the moon. You can replace the S-IVB and everything above it with whatever the fuck you want and the lower stages don't give a shit because it's just mass to them. The reason the Saturn V had such high specifications is because everything you need to get three astronauts on a lunar trajectory is *really fucking heavy*. If you replaced the astronauts, fuel, and other equipment required to go all the way to the moon with something else of equal mass, the Saturn V could put that into LEO just as easily as it sent astronauts to the moon.

      The nature of rocketry is such that a very light thing in a very high orbit tends to start out as a very heavy thing in a lower orbit. From the perspective of the lower stages of your rocket, a heavy thing in a low orbit is just a heavy thing that needs to be put into low orbit, regardless of whether it eventually ends up burning a bunch of fuel to put itself in a higher orbit, making itself lighter in the process, or if it just sits in that low orbit forever.

      --
      Make me a friend and I'll mod you up
    61. Re:Seems like a tremendous waste by dryeo · · Score: 1

      Gemini was originally designed to use a Rogallo wing attached to the front and back off the capsule with the crew sitting upright and controlling the forward motion of the capsule to land it on land.
      https://en.wikipedia.org/wiki/Project_Gemini
      https://en.wikipedia.org/wiki/Rogallo_wing

      --
      https://en.wikipedia.org/wiki/Inverted_totalitarianism
    62. Re:Seems like a tremendous waste by Teancum · · Score: 1

      Then again the Saturn V could have been used for military missions as well. There certainly was no law or reason why it couldn't be used, if the military needed such a payload. That such a launch would be hard to hide might be a problem, but the same could be said about Shuttle launches.

    63. Re:Seems like a tremendous waste by Ol+Olsoc · · Score: 1

      LEO is on the way to the moon. The Saturn V delivered to LEO a payload consisting of the Command and Service Module, the Lunar Module, and a booster with enough fuel to put all of the above on a lunar trajectory. You could replace all of this with any arbitrary payload of equal weight and the Saturn V would be able to put it into LEO.

      Well yeah, but whoosh.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    64. Re:Seems like a tremendous waste by ppanon · · Score: 2

      I don't see the OP saying anything about "no computers", just that the F1 engine was designed on blackboards and drafting tables, which appears to be generally accurate. It's a >50-year old design.

      Apparently use of IBM computers in rocket design goes back to the 50's and the Redstone rocket. However I'm not sure what computations were performed during the Redstone or F1 design. Maybe it was to numerically solve some differential equations that were first laid out on a blackboard (to avoid having to use the manual processes that were used in the Manhattan Project). Maybe it was for analysis of test data during the years it took to analyze the combustion instability problems of the F1. Nevertheless, the computational capability of the 36-bit word, 40Kips IBM 704 was pretty limited and its use would have been similarly limited. They wouldn't have been using it for finite element structural analysis, 3D combustion simulations, or any of the other kinds of CAE tools possible with modern supercomputers. If they had had those kinds of tools available, F1 development very likely wouldn't have taken 7 years. Applying modern CAE tools and computer power to an F1 redesign could provide new insights, or allow retrofitting capabilities such as thrust throttling, which would have been beyond the computing capabilities of 50's engineers.

      --
      Laissez lire, et laissez danser; ces deux amusements ne feront jamais de mal au monde. - Voltaire
    65. Re:Seems like a tremendous waste by ppanon · · Score: 1

      P.S. the F1 engine was mostly designed and developed during the late 1950's, not the early 60's. "Test firings of F-1 components had been performed as early as 1957"

      --
      Laissez lire, et laissez danser; ces deux amusements ne feront jamais de mal au monde. - Voltaire
    66. Re:Seems like a tremendous waste by LWATCDR · · Score: 1

      No it is very expensive per launch. The idea was that the Shuttle would be a lot cheaper than it was. The other issues is that much like say a 747 or an A380 you better fill it up to fly it. The Saturn V is the cheapest way to put 100,000 KG into LEO. If you need to put 100,000 KG into LEO. If you only need to put 10,000 it sucks.
      And yes you could load it down with a huge number of say Comsats but the cost of a fail would be terrible. You could have 20 dead birds instead of one or two.
      The Falcon 9 is a much cheaper system for smaller loads but for big loads you need big rocket.

      --
      See my blog http://ilovecookes.blogspot.com/ for light hearted technical information.
  6. Re:Tor Discussion Forums !!! by PPH · · Score: 1

    1) Off topic.

    2) That was a lot of work just to get a couple of suckers to click on Goatse links.

    --
    Have gnu, will travel.
  7. Are they really going to clear the engines? by Anonymous Coward · · Score: 0, Troll

    Can you really trust Dynetics? I mean, come on! They are going to be late and over budget, but blame all the problems on Thetans. Then ask NASA to pay a bit more, promising higher level analysis.

  8. The Best or Cheapest Option? by Anonymous Coward · · Score: 1

    Not being a rocket scientist; but for those that are: is the F1 booster the most efficient design, or is it being chosen simply because it is the cheapest design?

    1. Re:The Best or Cheapest Option? by 0123456 · · Score: 4, Informative

      Generally speaking, in rocket design, 'efficient' == 'expensive, temperamental, and hard to reuse'. Fuel is cheap, engines are expensive, so if you can throw more fuel at the problem you're usually better off than getting the last 10% efficiency out of the engine through complex design and materials.

    2. Re:The Best or Cheapest Option? by shinehead · · Score: 0

      I agree 100%. Run a rich fuel mixture to cool the engine and maybe 90% full throttle. And the fewer engine the better. http://en.wikipedia.org/wiki/Sea_Dragon_(rocket)

    3. Re:The Best or Cheapest Option? by nojayuk · · Score: 1

      The problem with that approach is that the stack has to carry more fuel at takeoff which requires more engine power to lift the stack since it's heavier which requires more fuel to provide that power which requires bigger tanks... OTOH more efficient engines mean more payload delivered to orbit for the same amount of fuel and vehicle structure.

      There are modern well-tested engines which have better performance than the venerable F-1 motor -- the RD-171 engine in the Zenit launcher has four chambers fed by a single set of pumps, delivering more thrust than the F-1 ever did and with greater efficiency. A cut-down 2-chamber version, the RD-180 propels the modern Atlas launcher.

    4. Re:The Best or Cheapest Option? by 0123456 · · Score: 1

      The problem with that approach is that the stack has to carry more fuel at takeoff which requires more engine power to lift the stack since it's heavier which requires more fuel to provide that power which requires bigger tanks... OTOH more efficient engines mean more payload delivered to orbit for the same amount of fuel and vehicle structure.

      But at a higher cost. Fuel is cheap, fuel tanks are cheap, engines are expensive.

      The F-1 is extremely inefficient compared to the SSME or even the J-2, but was used for the reason you state; an 'efficient' LOX/LH2 first stage would have been so large that it would have been difficult to build and operate using KSC infrastructure. Most of the potentially viable SSTO designs I've seen use LOX/Kerosene engines for similar reasons even though they're far less efficient than LOX/LH2.

    5. Re:The Best or Cheapest Option? by bmo · · Score: 5, Insightful

      Yeahbut....we wouldn't be basing the new F-1 type engine on the original F-1, we'd be using the F-1A.

      The F-1A has 33 percent more thrust than the F-1.

      9,189.60 kN for the F-1A versus 7,887 kN for the RD-171

      But here is where the real difference comes in:

      Lox/RP-1. Thrust to Weight Ratio: 115.71. for the F-1A

      It's 82 for your Russian motor. Thus the advantage of using one combustion chamber compared to using 4.

      Modern materials should lighten the F-1A and modern controls should improve efficiency and thrust even more to improve the thrust to weight ratio.

      Why the Russians never use large combustion chambers and why you see 4 of them on the RD-171: They never solved the problem of combustion instability beyond a certain size. We did.

      --
      BMO

    6. Re:The Best or Cheapest Option? by spectral7 · · Score: 2

      You're forgetting the purpose of a rocket: to put something useful into space. Getting a rocket and a bunch of fuel into space is worthless by itself. More fuel means less payload.

    7. Re:The Best or Cheapest Option? by pepty · · Score: 1
      Sheesh, they're called rocket scientists, not rocket weenies. Specific impulse is the name of the game! So what if the lithium, fluorine, and hydrogen fuel needs to be stored at separate temperatures over 400C apart and the hydrofluoric acid it belches out as exhaust will dissolve the entire gantry/launch pad/ launch facility - we're talking an exhaust velocity of 5 kilometers per second!

      And don't get me started on the EPA saying we shouldn't be lighting off a few hundred tons of red fuming nitric acid/ dimethylhydrazine or FOOF/dimethylmercury.

    8. Re:The Best or Cheapest Option? by cheesybagel · · Score: 1

      Yeah but the RD-171 has more ISP and runs at a higher chamber pressure.

    9. Re:The Best or Cheapest Option? by Z00L00K · · Score: 1

      But the Russians solved the problem with a closed loop system to get the engines more efficient, which can be seen in the RD180 engines used in the Atlas rockets.

      So some problems were solved in the US others in Russia, but combine the knowledge and you may get something useful.

      --
      If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.
    10. Re:The Best or Cheapest Option? by nojayuk · · Score: 1

      The F1-A doesn't exist other than as a concept, and to be blunt it probably never will exist. If it ever flies it will cost billions to develop and take maybe a decade from funding to flight. The RD-171 and RD-180 are being built and flown today and the development costs are already buried in the production line. An SLS based on those motors only requires the vehicle structure to be designed and built; by the time the first prototype rolls off the production line well-tested engines will be waiting for it to fit and fly.

    11. Re:The Best or Cheapest Option? by nojayuk · · Score: 1

      "Fuel is cheap, fuel tanks are cheap, engines are expensive."

      Mass is expensive in a rocket design and fuel/oxidiser is mass. The Saturn V burned over 10% of its first stage fuel and oxidiser load, about 220 tonnes just clearing the tower after ignition. With less efficient engines and a greater fuel load it might never have got off the pad.

      Fully-cryogenic engines are more efficient than LOX/RP-1 but they come with a bunch of drawbacks, the major one of which at takeoff is a lack of mass fraction, the amount of mass in the exhaust stream. This requires much larger engine bells and turbopumps for the same amount of thrust since liquid hydrogen is the least dense liquid known. This also means much larger tankage is needed (see the Giant Flying Turd the Shuttle was attached to) even if the fuel mass is less and tankage is mass too.

      The beauty of LOX/LH2 as a fuel is in its performance at altitude and near-vacuum where the reduced backpressure means a very high exhaust velocity; the vacuum Isp figure for the RS-25 Shuttle engine is 450-odd, compared to the F-1's sea-level Isp of 263. It's why the Saturn V's second and third stages were fully-cryogenic. Rocket scientists (who are, as their name suggests, smart people) have designed around this limitation by building pseudo-SSTO LOX/LH2 launchers like the Shuttle, Ariane etc. by afitting strap-on boosters to add some extra oomph at takeoff and to get the stack to a high enough altitude that the lessened weight due to fuel burn and the loss of the boosters will take the rest of the stack to orbit.

    12. Re:The Best or Cheapest Option? by dunkelfalke · · Score: 1

      Then again, NK-33 has got a better thrust to weight ratio (137) and was built in in the late 1960ies.

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    13. Re:The Best or Cheapest Option? by EdgePenguin · · Score: 1

      You could produce a near copy of Energia by using a core stage derived from the Shuttle ET (same width as the Energia core stage) with RS-68 engines (influenced by the RD-0120 engine design), and boosters derived from (currently flying) Zenit first stages. The aerodynamics are already proven.

    14. Re:The Best or Cheapest Option? by EdgePenguin · · Score: 2

      This. Sure, the F1A fantasy engine gets more thrust - but its still a very old design. There is a modern, closed cycle, engine that gives you similar thrust - and it is available right now, zero development costs. Just swallow your pride and buy Russian.

    15. Re:The Best or Cheapest Option? by nojayuk · · Score: 1

      There are a thousand ways to build a heavy-lift launcher, including using the STS ET and RS-25s or RS-68s plus strap-on boosters etc. There are problems with most of them engineering-wise, economic and political.

      The ET is not structural, it can't transfer a large thrust load vertically from a motor ring at its base to a second stage or payload package on top of it. The tankage sections of staging rockets like the Saturn V are built with vertical stringers to deal with that load. A redesigned ET will be heavier and take time and money to produce; it's probably best to toss it and design a Saturn-V-like cryogenic first stage like the Delta 4 with its RS-68 motor(s) if you want to go fully cryogenic, something that has its own expensive ground-handling problems.

      The real problem is time and money; the longer a NASA project takes to get to the point where it is ready to fly the more likely its funding will be cut or shaved by politicians out to make a point about extravagance or "waste" (as long as the funding cuts don't impact jobs and bennies in their neck of the woods, of course...). Attempts to keep a zombie program running by extending deadlines as its budgets are cut year after year usually just extends the agony. Developing an improved F1A engine will take several years, and even restarting the manufacturing operation to build replica vintage F1s will take some time which would make the program more vulnerable. The RS-68(A) and the RD-171 motors are available now and only cost money to make and fly.

      If I was blue-skying a heavy-lifter I'd be tempted by the Delta 4 Heavy design which uses three substantially similar first stages side-by-side. It's not trivial engineering to cope with the extra thrust in the central stage but adding more booster "cores" in a 4 plus 1 or even 6 plus 1 arrangement would be easier in terms of design and flexibility, and these cores are already in production. I think this is the way SpaceX is approaching their own clean-sheet heavy-lifter project although they have proposed a rather Heath Robinsonish process for transferring fuel and oxidiser between cores in flight rather than throttling back the central core or only firing its motor in flight as a pseudo-second stage after the booster cores have been running for some time.

    16. Re:The Best or Cheapest Option? by EdgePenguin · · Score: 1

      Sorry to correct you, but the ET must be structural - the orbiter is attached to it, but not to the SRBs. The SRBs produce more thrust than the SSME so the ET must be able to transfer this thrust through to the orbiter. If you side mount the payload (think Energia/Polyus or Shuttle-C) I can't see any reason why the thing would need to be modified internally. You just would need a structure at the base to transfer thrust where it expects it.

      I'd disagree with having multiple copies of the same; the strength of designs like Energia, Ariane 5 and the Space Shuttle is having a high Isp (LH2) core stage that gets extra thrust from a lower Isp, high trust booster stage. This gives you the best possible balance between efficient accumulation of delta-V and a minimization of gravity losses.

      As you say, this is blue-sky engineering.

    17. Re:The Best or Cheapest Option? by cheesybagel · · Score: 1

      Actually it is more like buy Ukrainian since they are the only place still manufacturing the RD-171. The Russians manufacture the two-chamber and single-chamber derivatives. UTC/Pratt & Whitney Rocketdyne even have a license to manufacture the RD-180 two-chamber version in the US since it was a defense requirement for it to be useable in the Atlas V EELV.

  9. Buy Chinese by Anonymous Coward · · Score: 0

    If it's a waste of money, then why not just buy the rocket engine from China? It's certainly saner than buying "micro" chips from the Reds. A rocket engine (minust the guidance system which should be American made) would be easier to comb for intentional "bugs" than microscopic computer parts.

    1. Re:Buy Chinese by Anonymous Coward · · Score: 0

      Dude, it would not be easier. It is easier to make parts like this fail since they are under extreme stress. You republicans need to quit pushing parts from the communist party. We know that it is just like you, but it does not work for the west.

  10. About the "age" of things... by MasterOfGoingFaster · · Score: 1

    I just realized the Intel microprocessor is almost as old as the F1 rocket engine.

    Not quite sure what to make of that realization.

    I did have my hands on a F1. If you want to see my photo, google "VolCo360". or click this link. http://www.volco360.com/2012/07/the-engine-that-could.html

    --
    Place nail here >+
    1. Re:About the "age" of things... by hvm2hvm · · Score: 1

      Well to be fair, the Intel CPU might be old in name but the architecture and design of modern CPUs is very different from the ones at the start. The only thing that is the same is the basic instruction set which are just specification of what the CPU should do, not how. The specification for a rocket engine didn't change either (i.e. output a lot of thrust) but the inner workings design can probably be improved.

      --
      ics
    2. Re:About the "age" of things... by dreamchaser · · Score: 1

      Well to be fair, the Intel CPU might be old in name but the architecture and design of modern CPUs is very different from the ones at the start. The only thing that is the same is the basic instruction set which are just specification of what the CPU should do, not how. The specification for a rocket engine didn't change either (i.e. output a lot of thrust) but the inner workings design can probably be improved.

      Not really. Think about internal combustion engines. The same basic principles are used in modern ones as were in the originals. It's the same with microprocessors. Modern CPU's use the same basic principles (flipping bits around, logic gates, etc.) as did the originals. They just do it far faster, more efficiently, and on a more massive scale.

      You're probably thinking about how they work in terms of internal microcode. Yes it is very, very different than it used to be and is abstracted by a higher level instructions set, but the same basic principles still apply.

    3. Re:About the "age" of things... by hvm2hvm · · Score: 1

      So? Of course the same damn principles apply, physics didn't change and for now we don't have quantum computing technology or the ability to make tiny fusion reactors for every car.

      You are insulting decades of engineers that put a lot of work into improving CPUs or engines. They did that step by step, inventing completely new ideas to make everything go faster and work more reliable. If we lost all the technology since the 70s we would have a tough time reproducing everything. Just saying "use logic gates, flip your bits" doesn't even come close to the problem of building a CPU. You would do a shitty job only basing yourself on "the basic principles".

      --
      ics
  11. Re:Tor Discussion Forums !!! by Macrat · · Score: 1

    2) That was a lot of work just to get a couple of suckers to click on Goatse links.

    You make a habit of clicking on spam links?

  12. Apollo-era F1 Engine? by Scootin159 · · Score: 3, Funny

    Am I the only one who was wondering what NASA was going to be doing with a Cosworth DFV?

    1. Re:Apollo-era F1 Engine? by GrahamCox · · Score: 1

      No, I thought the same :) but I doubt that the largely US audience here would get the joke.

    2. Re:Apollo-era F1 Engine? by rossdee · · Score: 1

      The best F1 engines these days are euuopean - Renault, Mercedes and Ferrari

      and Formula 1 has a bigger budget than NASA.

    3. Re:Apollo-era F1 Engine? by WindBourne · · Score: 1

      And yet, I will trust NASA to get me to the highest speeds, furthest distance, and least amount of maintenance or least bugs, LONG before I trust Renault, Mercedes or Ferrari.

      --
      I prefer the "u" in honour as it seems to be missing these days.
    4. Re:Apollo-era F1 Engine? by aaronb1138 · · Score: 1

      Indeed, I for a moment thought this was related to a space elevator concept. I recall hearing a couple Formula SAE students discussing the down force being well in excess of vehicle weight at 60 mph, and started thinking about that as well.

  13. Costs by Altanar · · Score: 3, Informative

    Wouldn't it be more cost effective for NASA to just use the upcoming SpaceX Merlin 2 engine? The design documents state that the Merlin 2 should provide 890 kN more thrust than the old F1 engine and should be much more efficient. Plus, the Merlin 2 has the benefit of being already in active development: SpaceX expects they'll have it ready for certification within 3 years.

    1. Re:Costs by joe_frisch · · Score: 1

      It would be worth watching the progress on Merlin 2, but as far as I can tell, SpaceX isn't publicly releasing their progress on the engine. That's absolutely fine, but it probably don't make sense to design a new rocket around the engine until it either exists, or the company commits to producing it. There have been lots of aerospace ventures that have been canceled for technical or economic reasons after the program started.

    2. Re:Costs by WindBourne · · Score: 1

      Actually, there was one interesting statement that was made prior to C2-C3 launch. Basically, they said that they have temporarily set aside other work to focus on that launch, and that included their hydrogen engine AND Merlin 2. So, there is some work continuing on these, but to what degree is unknown. It could be 1-4 ppl total working on both engines. It could be more.

      But seeing how Musk operates, he used to talk openly (basically selling them) about everything, but then changed to only talking about items that are quite close to production. For example, in Tesla, they are working on Blue Star (sub 30K cars), and yet, they keep it quiet. Instead, they speak about model S and X, which are White Star cars that they just delivered the S, and will deliver the X next year.

      --
      I prefer the "u" in honour as it seems to be missing these days.
  14. It's all a great waste by Anonymous Coward · · Score: 0

    None of the proposed missions are compelling enough to withstand Washington DC political processes for a sufficient amount of time to reach completion. The American people have not bought the stories used to justify the projects, and hence they are all extremely vulnerable to the vagaries of politics over the next decade.

  15. Obligatory XKCD by gman003 · · Score: 2, Interesting
    1. Re:Obligatory XKCD by 32771 · · Score: 1

      Oh crap, you mean I should talk to our village nazi to make me a better engineer? Last time I saw him, he wanted to shoot me (Don't worry I'm the gun club member, he isn't).

      You have to admit that while von Braun might have been a bit careless about the fate of the slave workers in Mittelbau-Dora he actually had to flee the SS that wanted to kill him and his people. He could have also fled to the Russians, so it is not as if he hadn't chosen among his options wisely.

      --
      Je me souviens.
  16. Air Force General Saying by wisebabo · · Score: 1

    "A new airplane doesn't make a new engine possible, a new engine makes a new airplane possible".

    While this may be the right thing to do, admit your mistake (cough "shuttle" cough), and use a simple cheap design for a big dumb booster, I'm a little sad for possibilities lost.

    Too bad the linear aerospike engines never panned out (X-37?) or the hypersonic scramjet hasn't been fully developed. While the F-1 may reduce launch costs by a factor of 10, it'll take some revolutionary new technology to bring it down by a factor of 100. (Unless I'm seriously wrong and Elon Musk can do it by reusability and sheer operational efficiency). So maybe space flight for the ultra-rich but not for the rest of us. Not until the space elevator at least.

    I'm also afraid that the rebirth and re-design of the F-1 will suffer "mission creep" like; let's make it out of some super-exotic alloy to protect against corrosion for possible ocean recovery and we need to add the capability for a restart. By the way, just how reliable were the original F-1s? Didn't one fail on the way to orbit on Apollo 13? Any other failures?

    1. Re:Air Force General Saying by Anonymous Coward · · Score: 0

      Although there were failures on the pad (I don't know if they were related to the F-1), the Apollo 13 disaster was unrelated to the F-1. Indeed, by the time anything went wrong, the first booster stage (with the F-1's) had long since been discarded. Apollo 13 had a malfunction in the Oxygen tank. (It additionally had an early shutdown of one engine in the second stage, but once again, that wasn't an F-1, and it did not threaten the mission.)

  17. The SLS is SUCH a mistake by WindBourne · · Score: 2

    Right now, this is nothing more than a GD neo-con job's bill that will waste another 10-20 billion, 10 years to get a rocket that will launch 70 tonnes to LEO at $1-3 Billion per launch.

    Instead, a far better solution is to create a COTS-SHLV for 2 Super heavy launch vehicles that are in the range of 150 +- 20 tonnes to LEO. Two American companies would get 5 billion each over 5 years total to design, build and test the rockets which have to have no less than 85% American construction/parts. Upon the successful completion of these, another contest would be held for 2 companies to win a contract of 2 launches a year for 4 years. In addition, who ever is the cheapest would then get a 3rd launch, at the same price as the other 2. The max can only be .5B/launch.

    With this approach, we could have multiple launch systems that can then be used to back each other up, but also can be used to launch private industry as well as military. And once there are 2 launch systems with cheap prices, and can do 150 tonnes to LEO, you can bet on it that we will see a major build-up of private space.

    OTOH, the SLS is PROHIBITED by law from doing private launches. It can only by used by NASA and the DOD. And from the DOD's POV, they would rather have much cheaper prices then 1-3 billion/launch. However, if private space can do a .5B and under launcher, then we will no doubt see many many launches, space stations and most importantly, stations on the moon and mars.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  18. Re:Aloft With The Wind by WindBourne · · Score: 1

    Well, another neo-cons has spoken, but has ignored the fact that it was the neo-cons reagan and W that ran up the bulk of the debt, created our nightmare economy that we now have, destroyed our manufacturing base, and put us into 2 wars while totally FUBARing them to a level that ALL military strategy books will use these as what NOT to do. And just like reagan and W, you have a yellow spine and hate to take responsibility for your own damn actions.

    --
    I prefer the "u" in honour as it seems to be missing these days.
  19. And the problem is? by Anonymous Coward · · Score: 0

    And what is the problem with building an engine of this type? Did the math change? You can tweak it a bit, but the basic design is sound (very sound). The engineers that designed it weren't just pissing away the day, they did a big fat wad of aerodynamic tests when they designed it. You can compare computers used back then, and rightly compare computers designed now, and say "oh my", but jet/rocket engines? The big era for advancement in jets and rockets was in the 1950's and 1960's (well, actually starting in the late 1930's and through the 1940's in Germany). There have been advances since, but not like the advances then. Turbines (rocket and jet) are a product of the late industrial age. The electronic/computer age is the one we are in. Big changes in computers, small changes in rocket design. A new "tweaked" Saturn V engine might give 5% more power for 5% less fuel. The big thing is that you can run billions of computer simulations to do the tweak, something the original engineers couldn't do.

  20. Saturn V wasn't used to boost large payloads to LE by sconeu · · Score: 1

    Apollo 9 says hello.

    --
    General Relativity: Space-time tells matter where to go; Matter tells space-time what shape to be.
  21. Skip the F1, how about the M-1 by AbrasiveCat · · Score: 2

    Well there was another engine bigger than the F-1, that is the Airjet M-1. There is a piece of one at the Evergreen Aviation Museum. http://www.evergreenmuseum.org/the-museum/aircraft-exhibits/space-flight/ Very big, very impressive. It was design for 1 1/2 million lb of thrust in the base configuration. It would make a interesting starting point for a updated engine.

    1. Re:Skip the F1, how about the M-1 by Anonymous Coward · · Score: 0

      http://www.flickr.com/photos/mnorri/3135113498/
      http://www.flickr.com/photos/mnorri/3135112170/
      http://www.flickr.com/photos/mnorri/3134287657/

      I'm sure Evergreen would let them check it out, too.

  22. shame the Saturn was canceled by p51d007 · · Score: 1

    Aside from the Apollo 13 problem (which had nothing to do with the Saturn launch vehicle), the flight record of the Saturn V launch system was PERFECT. Those "steely eyed missile men" who built the thing developed a perfect launch vehicle. Then, the shuttle came around and boom...it was dropped. Funny how they are revisiting something from 50 years ago. Let's see...what other OLD hardware still works. 1. incandescent light bulbs 2. Internal combustion engine 3. The Browning/colt M-1911 4. The B-52 bomber Just because it is OLD, doesn't mean it "just works".

    1. Re:shame the Saturn was canceled by Z00L00K · · Score: 1

      Old stuff that still works today are representing the top items of their time. There was a lot of stuff back then that was junk too, and that has rightly perished.

      --
      If builders built buildings the way programmers wrote programs, then the first woodpecker would destroy civilization.
  23. Rebuild all of Apollo by Tablizer · · Score: 1

    It looks like Apollo, it smells like Apollo, and it tastes like Apollo.

    Just yank the plans out and re-make the whole damned thing. Russia's 40-year-old tech still works well. Space rides are mostly a mechanical and chemical process, not an electronic one such that the old concepts are still relevant.

  24. Sorry to correct the flag waving, but ... by dbIII · · Score: 4, Interesting

    Why the Russians never use large combustion chambers and why you see 4 of them on the RD-171: They never solved the problem of combustion instability beyond a certain size. We did.

    Von Braun didn't either but instead worked around it, which was possible using several engines instead of relying on continuous output from a single engine. The F-1 bounced around all over the place, but that was known behaviour.

    1. Re:Sorry to correct the flag waving, but ... by bmo · · Score: 4, Informative

      Sorry to correct you, but the F1 did bounce around all over the place until they found the correct pattern of holes in the injection plate.

      This they did by blowing up a lot of engines, and when they did finally find the correct plate, they tested instability by putting an explosive charge and detonating it inside the combustion chamber while the engine was running. The F1 self-stabilized with the correct plate, within 1/10th of a second.

      --
      BMO

    2. Re:Sorry to correct the flag waving, but ... by Dr.+Spork · · Score: 1

      Sorry to correct you, but the F1 did bounce around all over the place until they found the correct pattern of holes in the injection plate.

      This they did by blowing up a lot of engines, and when they did finally find the correct plate, they tested instability by putting an explosive charge and detonating it inside the combustion chamber while the engine was running. The F1 self-stabilized with the correct plate, within 1/10th of a second.

      -- BMO

      Holy shit, engineers used to kick ass! Would modern computer modeling techniques produce a result that good? I ask because there are always going to be assumptions made in the modeling that don't quite capture every nuance of the physical reality. Maybe some problems with turbulence and other very non-linear phenomena are really better studied with full scale physical models.

    3. Re:Sorry to correct the flag waving, but ... by dbIII · · Score: 1

      You've misunderstood badly. The testing with explosives was carried out to ensure that the instability of the engine would not be a problem with the complete design. That was even in the BBC documentary on the space race and Deborah Cadbury's book on the series FFS, let alone anything that described the Saturn five in detail.

    4. Re:Sorry to correct the flag waving, but ... by dbIII · · Score: 1

      Maybe some problems with turbulence and other very non-linear phenomena are really better studied with full scale physical models.

      Modelling fluid flow is still a patchwork of equations with the equations chosen for whatever conditions you expect - and they don't all match up very well on the edges. While full scale might not be needed some sort of model is sometimes used (I've only seen it in two situations so I'm not sure how much).
      The one and only time I saw an analogue computer (patch cables and amplifiers) was next to an experiment on laminar air flow as long as a building. A mathematical model was being fine tuned to match the observed behaviour.

    5. Re:Sorry to correct the flag waving, but ... by DulcetTone · · Score: 2

      Catherine Bly Cox and Charles Murray's stupendous (a mild word here) book, Apollo tells this back story between pages 130 and 175 or so.

      My recollection of the germ:

      The early engines were unstable and would flame out or shake themselves to pieces. These faults were apparently corrected by trial and error iteration on the injector plates, but the question was how to determine that they had been fully solved with a reasonable test regimen.

      The bomb test was a metric to force an instability on an engine that had proven to run stably, and the requirement was that the engine had to resume a stable burn within 4/10th second. The goal was that this forced instability would help assuage doubts about what their limited tests might not be showing them. The accepted engine design actually stabilizing within 1/10th of a second.

      --
      tone
  25. Hauling large volumes changes slower by Grayhand · · Score: 1

    We get too fixated on the latest and greatest, The point is the physics don't change so the technology needs updating not a from scratch approach. Look at trains. The biggest change from the 1800s is the shift to diesel from coal. Otherwise the technology is largely unchanged only the safety equipment gets upgraded regularly. Funny how we are still trying to get back to where we were in the late 60s with rocket engines. The SR-71 is another good example. They were used into the late 90s and it was 50s technology. A ram jet is fairly simple and other than refining it you aren't going to dramatically change the design. Officially the SR-71 still holds speed records.

    1. Re:Hauling large volumes changes slower by thebigmacd · · Score: 1

      The SR-71 didn't use ram jets. It used a special moveable inlet cone to control the velocity and flow characteristics of the air entering a conventional turbojet.

  26. This idea is probably... by Anonymous Coward · · Score: 0

    ...the BEST idea since Apollo.
    Those engines are still state of the art, their age doesn't matter... no better engines has been made yet (nobody cared).
    Things (engines, planes, ships) became obsolete WHEN something far superior is manufactured, not simply because they are old.

  27. Lack of innovation by petes_PoV · · Score: 2

    Is there any reason we shouldn't recycle designs when it comes to rocket engines?

    Even considering going back to a 40+ year-old design is an admission of failure - pretty typical for government funded projects, when compared to the private sector. Compare that with all the innovation (admittedly, spurred on by an almost constant state of war) in the 'plane industry. 60 years stood between wooden biplanes and the Jumbo Jet and the US government is now saying that the best way to resurrect their space programme is to start making the rocketry equivalent of a DC-3, again.

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
    1. Re:Lack of innovation by Jeff+DeMaagd · · Score: 2

      Even considering going back to a 40+ year-old design is an admission of failure - pretty typical for government funded projects, when compared to the private sector.

      The 747 is still being made, 43 years after its first flight in 1969, the year of the first Moon rocket. The 737 is still being made, first flight, 1967. Sure, they're different now, but the fundamental design is still there. They're still competitive with much newer designs, otherwise they wouldn't be offered anymore.

      I'm not sure where the DC-3 comparison comes in, is there a new regime of rocket engine that compares with going from rotary piston prop to jet engine? Even SpaceX's home-built Merlin engine isn't some fancy design that supersedes all engines before it, at least not in the manner from piston to jet.

      I'm not sure where the leap from 40 years difference and 60 years in your comment.

    2. Re:Lack of innovation by Anonymous Coward · · Score: 0

      Congress has demanded that the Senate Launch System be "heritage derived", and this means SRBs, J-2s and SSMEs. NASA is trying the "let's just use F-1 that we have lying around" canard to get a rocket they could actually use.

      When it's discovered three years down the line that there is absolutely tooling, plans, or human capital and they'll have to start from scratch, they'll pick up the phone and call Elon, who is the only person in the united states that has an active and trained kerolox design team.

  28. Re:The Best or Cheapest Option? Best *IS* cheapest by petes_PoV · · Score: 2

    Fuel is cheap, engines are expensive,

    You're looking at this all wrong. Fuel is cheap to manufacture but it's incredibly expensive to carry up to orbit. Especially when the only reason for doing so is because your engines are so badly designed that they waste a lot of fuel in the early stages of flight. In that respect, trying to pinch pennies on engine design, materials and production is a false economy - unless your even more precious commodity is development time, as with the "space race".

    If you plan to productionise getting to LEO, it's much better to device a system with the lowest overall cost: that would include not just the cost of the fuel, but the vehicle (disposable/reusable) as well.

    --
    politicians are like babies' nappies: they should both be changed regularly and for the same reasons
  29. Testament to our lack of capability by EmagGeek · · Score: 1

    Have we really reached the point where the best our "best and brightest" can do is recycle 60 year old designs, and they have to sub out to a private firm just to do that?

  30. Greener by Anonymous Coward · · Score: 0

    I would Love to see some alternate methods tried.
    No one has tried a giant rubber band,or firing the capsule from a cannon.
    Wouldn't it be greener to just take the elevator up? Or once on the moon install a winch system to Earth?
    If only we could use green cheese as a fuel for the return trip. Think Green!

  31. Can't we build space vehicles instead of weapons? by Zaphod-AVA · · Score: 1

    If the problem with space exploration is the politics of paying the bill, why can't we point some significant portion of the military industrial complex at the problem? We can have all the pork-barrel juicy government contracts and create jobs, and be working towards improving mankind instead of mass murder.

  32. Step 1 by Anonymous Coward · · Score: 1

    Rename the company.

  33. That design is over 50 years old by Anonymous Coward · · Score: 0

    That design is over 50 years old, surely we can build something much better today. , But there are tradeoffs.

    We need to compare the costs of designing testing and building a totally new design versus the same for the old design.

    Many people don't realize that we don't even know -how- to build those old components any more and that because the original designers are dead or gone, it will actually take longer to understand the old design than it will to start from scratch.

    Besides we need a re-usable rocket engine with the same lift ability as the F1, but smaller, lighter, using less fuel, more reliable and more recoverable and totaly re-usable.

    There, those are your design goals. Go.

  34. F1 engine from the inside... by KH2002 · · Score: 1

    I took this years ago at the U.S. Space and Rocket Center in Huntsville AL.

    http://www.flickr.com/photos/kimhill/4412421201/

    Wide shot: http://www.spacelaunchreport.com/s5msc1.jpg

  35. Please, don't come back BMO by Anonymous Coward · · Score: 0

    Biggest Mentalcase Online? Take yer meds BMO, or your shock treatments, please! You need them and please, spare us your bullshit commentary. No mind trolling loons like you need not apply as to posting here. Nobody cares what a nutcase like you has to say.

  36. The Rocket to Nowhere by Anonymous Coward · · Score: 0

    Oink, oink, oink. More pork for Nasa/Houston for pointless manned missions while Houston tried to kill Mars exploration at Nasa/JPL...

  37. I hope Dynetics doesn't get by ToddInSF · · Score: 1

    sued by the Church of Scientology...