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Russia Wants a Hypersonic Bomber

derekmead writes "Hot on the heels of the U.S. Air Force's most recent failed test of an unmanned hypersonic vehicle, Russia now says it wants to jump into the hypersonic game with a long-range bomber. Will Russia's newest Bear fly at 4,500 miles an hour? The Russian military sure hopes so. 'I think we need to go down the route of hypersonic technology and we are moving in that direction and are not falling behind the Americans,' Russian Deputy Prime Minister Dmitry Rogozin said on Russian television. 'The question is will we copy the Americans' 40-year experience and create a [Northrop] B-2 analog or will we go down a new, ultramodern technology route, looking to the horizon, and create a machine able to penetrate air defenses and carry out a strike on any aggressor.' The Russians want their plane operational by 2020, which doesn't seem particularly realistic — we are talking about five times the speed of sound here, and Russia is just starting engine development. The U.S., meanwhile, has been investing in its Waverider program since 2004, and the last test of the X-51A scramjet-powered missile failed after just 15 seconds."

68 of 319 comments (clear)

  1. Just what the world needs by Anonymous Coward · · Score: 2, Funny

    another hypersonic bomber

    1. Re:Just what the world needs by BLToday · · Score: 2

      "Another"? I don't remember seeing one operational.

    2. Re:Just what the world needs by mcfatboy93 · · Score: 2

      There is probably a good reason for that...

      --
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    3. Re:Just what the world needs by DragonTHC · · Score: 2, Informative
      --
      They're using their grammar skills there.
    4. Re:Just what the world needs by ravenshrike · · Score: 4, Informative

      Hypersonic is Mach 5+.

    5. Re:Just what the world needs by UncleTogie · · Score: 3, Informative

      Operational but not deployed.

      Retired and not operational.

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    6. Re:Just what the world needs by turkeyfish · · Score: 2

      Why bother with any of this as missile technology will permit the same speeds at a fraction of the cost?

      If you are going to want to deliver a payload, missiles are the way to go, since you can deliver more mega-tons per dollar and he who does that wins, whatever winning might be defined as in the event any of this technology is actually used.

      This is more about "hype" for military budgets than for "hypersonic" travel. Those foolish enough to fall for the hype are one step closer to paying for it.

    7. Re:Just what the world needs by JimCanuck · · Score: 2

      Wont work, they've been trying for decades .... https://en.wikipedia.org/wiki/Ayaks

  2. Back to the Future... by jedidiah · · Score: 2, Insightful

    Perhaps it's time to get the SR-71 out of mothballs.

    Despite being ancient and retired, it still seems to be the best thing going.

    --
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    1. Re:Back to the Future... by Jeng · · Score: 4, Informative

      Except for being the wrong plane for the job.

      It is a surveillance plane, not a bomber and not a fighter.

      It takes pictures and goes fast and there is no room for carrying ordnance. It can't even take off with it's fuel tanks full.

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    2. Re:Back to the Future... by Shagg · · Score: 2

      To drop cameras on the target?

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    3. Re:Back to the Future... by Richard_at_work · · Score: 5, Interesting

      It can take off with full tanks, it just doesn't because it's single engine performance (needed to be considered incase you lose one on takeoff) is poor - they used to fly with full tanks from Kadena regularly, depending on the mission profile.

      Also, there is plenty of room for weapons bays in the payload bays aft of the cockpit - that's where the YF-12A had its Aim-47A missiles stowed. Yup, there was an interceptor variant of the A-12/SR-71 tested.

      It's still the wrong aircraft for the job, because it's been out of service for nearly two decades, and the jigs and tool sets have been destroyed for nearly twice that long.

    4. Re:Back to the Future... by Moofie · · Score: 5, Insightful

      It's almost like the conditions at mach 3 and mach 6 are pretty different or something.

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    5. Re:Back to the Future... by ColdWetDog · · Score: 2

      It's almost like the conditions at mach 3 and mach 6 are pretty different or something.

      Yeah, 3 and 6 are pretty close. Small numbers. No big deal.

      Sheesh. Everything is so hard. I hear that all day.....

      --
      Faster! Faster! Faster would be better!
    6. Re:Back to the Future... by sjwt · · Score: 4, Interesting

      I remember reading that if you where to update the SR71 engines with modern alloys (rememberer that the SR71 is a 1960's era plane) that it was possible for them to reach around the Mach 6 range.. as the limiting factor in the fitted engines was their ability to withstand the heat they produced..

      Now that would be something to see!

      "Early 1990s studies of inlets of this type indicated that newer technology could allow for inlet speeds with a lower limit of Mach 6.[46]"
        http://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird

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  3. Good by Sparticus789 · · Score: 4, Insightful

    Glad someone else is stepping up to the plate. Development on such equipment could easily lead to civilian hypersonic aircraft, getting rid of 15 hour flights to Australia and such. Also sparks research on better ways of space travel, as the scramjet is closer to being space capable than a traditional jet engine.

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    1. Re:Good by Jeng · · Score: 2, Insightful

      I ain't sure about being able to operate in space, but it has may be a very good way to get there.

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    2. Re:Good by imemyself · · Score: 2

      I don't think it was the loudness of the ride that killed the Concorde...but rather the cost of the tickets (and the rising cost of fuel).

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    3. Re:Good by Sparticus789 · · Score: 2

      Jet engines are restricted to lower altitude use because of the lack of air. Scramjets have a higher ceiling, because they use a different intake process which requires less ambient air. So we go from needing lots of air (jet) to needing less air (scramjet). The next step would be an engine that does not require air (space). It's the next logical progression of engine development.

      Walk, Jog, Run.

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    4. Re:Good by Richard_at_work · · Score: 3, Interesting

      The tanks leaking was not the reason for taking off with a low fuel load - see my post above.

      In service, Concorde made plenty of profit for British Airways (no idea about Air France) and the clientele that flew on it loved it - it had a smooth, quiet ride and engine noise was not an issue for those in the cabin (the engines are set back toward the very end of the cabin and some distance from the fuselage, not to mention underneath a wing).

    5. Re:Good by Sparticus789 · · Score: 3, Informative

      Fifteen!? Luxury! From the UK you're looking at about 24 hours *flying* time, ignoring any time on the ground when you stop over somewhere in the middle. It's a good job I enjoy reading on flights :) Faster planes would be good... faster and more efficient planes would be amazing!

      15 hours for a non-stop flight. Looking it up, it would appear the longest flight time for a commercial flight is 18 hours 50 minutes, from New York to Singapore.

      --
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    6. Re:Good by Xiterion · · Score: 3, Interesting

      Propelling a train in a tube with air pressure would make the problem of drag worse, not better. Sure, it's better for the vehicle, but overall you have to cram your air mass through the tube, drastically increasing the surface area that is exposed to the high velocity air stream. That's not to say such a pneumatic tube scheme couldn't work for lower speed transports, just that it doesn't seem to be a feasible option for ultra high speed transport.

    7. Re:Good by ultranova · · Score: 2

      Please explain for the unwashed masses how a scramjet is closer to being space capable? Doesnt it require a funneled input of compressed gas to function... gas that I assume is not too abundant in the vacuum of space?

      Thing of javelin throwers: they take a running start before throwing the javelin to get maximum distance. In the same way, you'd use the scramjet to accelerate as long as you can, then use a rocket engine to take you the rest of the way. And you might be able to use the scramjet as a rocket engine by simply switching into an internal air/oxygen supply when the atmosphere runs too thin.

      --

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    8. Re:Good by Anonymous Coward · · Score: 5, Informative

      I recently read that the Concorde, while taxiing into takeoff position, used as much fuel as a modern airliner uses getting all the way to its destination

      That says more about the reliability of your reading material than the fuel efficiency of the Concorde. It's incorrect by three orders of magnitude.

      A 777 uses ~120000kg of fuel for a transatlantic flight. A Concorde uses ~80000kg for the same flight, and ~200kg to taxi into takeoff position.

    9. Re:Good by Ashenkase · · Score: 2

      Yep,

      It would take the cost per pound to get to space WAY down.

      It would probably be a phased flight:

      • Take off via air breathing engines and take the vehicle up to altitude.
      • LOX/LH2 rocket to bring the vehicle up to speed for scram jet operation.
      • Scram jet kicks in at something ridiculous like 4.5 mach and propels the vehicle up to an even more ridiculous speed (mach 8 or 10?)
      • Put the vehicle on a sub-orbital or orbital trajectory and wait for the scram jet to run out of compressed oxygen.
      • Kick the LOX/LH2 rocket back on for a burn to orbit or a higher sub-orbital speed.

      Kind of similar to what Skylon is doing without the 2 in 1 engine.

    10. Re:Good by nojayuk · · Score: 2

      Concorde didn't cruise at Mach 2 in afterburner -- imagine how much fuel it would use pouring JP-4 into the engine exhausts for two hours. Concorde flew supersonic at 20km altitude by means of large powerful engines which burned a lot of fuel but in a conventional manner. It did use afterburners on takeoff and initial climb out because the engines and the intake nacelles were optimised for supersonic cruise flight and at takeoff the fuel load, as much as 50% of its total on-wheels weight made the entire airframe quite heavy.

    11. Re:Good by 0123456 · · Score: 2

      Even worse, it is proportional to the speed cubed, so if one goes twice as fast, one needs eight times the power to deal with the wind resistance.

      Which is why the SR-71 flew at 80,000+ feet and not 30,000-ish feet with the airliners. And why a 747 flies at 30,000-ish feet and not 10,000-ish feet with the DC-3s.

    12. Re:Good by ColdWetDog · · Score: 3, Funny

      You forgot the 'boom' part of it in the middle.

      --
      Faster! Faster! Faster would be better!
    13. Re:Good by SJHillman · · Score: 2

      Not requiring water is a world of difference away from not requiring to drink water from a spring because they get it from another source. They still need the water just like a scramjet still needs air. Unless you're proposing they just take it along with them, but then it's essentially just another rocket and not based on scramjet technology at all.

    14. Re: Good by Anonymous Coward · · Score: 3, Informative

      He read that on /. a few weeks ago, and a number of us dug into the details. It turns out to come from the BBC, and is a heavily-rounded, but essentially correct, comparison of the Concorde's taxi allowance to some 737 flavor on one of the shortest scheduled airline flights (just across the English Channel, IIRC), asphalt-to-asphalt.

      Of course, the short hop is carrying enough fuel for the hop (plus a bit for diversion, etc.), while the Concorde is lugging fuel for an entire Atlantic crossing, so the roughly comparable passenger load didn't mean as much as we were meant to think.

    15. Re:Good by nojayuk · · Score: 4, Informative

      The problem is that engine design improvements for airliners over the past fifty years have been aimed at subsonic flight regimes producing the modern high-ratio bypass turbofans where the core jet turbine only produces 15-20% of the direct thrust and the fan produces most of the "push". Sadly fans don't work in supersonic regimes although if some aerodynamic Einstein ever comes up with a solution then the world will beat a path to her door.

      That restricts supersonic flight to rockets, scramjets etc. and to pure jet engines with variable intake nacelle structures that can slow the incoming air to subsonic speeds so it can be compressed, burned and turned into thrust. The Olympus 593s that powered the Concordes are fifty-year-old designs. Modern engines with similar capabilities are a bit smaller, lighter and more fuel-efficient but they are not even twice as efficient as the originals.

    16. Re:Good by Anonymous Coward · · Score: 2, Informative

      Actually, it was a victim of bad timing more than anything. It had a design flaw resulting in the famous Flight 4590 crash, and the fleet was grounded while a fix was developed. They got it turned around and started modifying the planes and resumed service right after 9/11 -- when the airline industry went into a multi-year slump. Ongoing operations barely broke even, but upcoming maintenance would have been a loss, so the programme got the axe.

      The thing that really would have made the Concorde really successful, instead of turning a small operating profit but never recouping drvelopment, was more planes -- the design had already been revised, and further production would have had significantly extended range, allowing more routes to be serviced. (Naturally, the longer the route, the more customers will be willing to pay to shorten it.) The profits from this might have permitted a whole new follow-up aircraft with transpacific capability, which is the real SST moneymaker, and with China's rise as an economic power would only have become more lucrative.

    17. Re:Good by Solandri · · Score: 3, Informative

      In service, Concorde made plenty of profit for British Airways (no idea about Air France)

      Concorde as a plane made a profit. As an aircraft model, it did not. The problem was its huge operating cost for a trans-Atlantic flight (somewhere between $1500-$2500 per passenger - if the crash hadn't killed it, the spike in fuel prices in 2007-2008 would have). That meant your clientele were only a thin sliver of the overall market, and most of them were concentrated on a few routes (between major economic centers, or an economic center and major resort destination). On top of that, a few planes completely saturated your market on a route. That's fine if you're the only carrier which flies the plane on one of those golden routes. But if you were hoping to sell hundreds of the planes to recoup the billions of pounds/francs spent developing the aircraft, you're totally screwed.

      Yeah if you got one of the $100 HP Touchpads during its closeout sale, it was hugely profitable for you. But the fact that HP never recouped its huge investment in developing the device means it was a financial failure.

      and the clientele that flew on it loved it - it had a smooth, quiet ride and engine noise was not an issue for those in the cabin (the engines are set back toward the very end of the cabin and some distance from the fuselage, not to mention underneath a wing).

      Concorde seat width was 17.8". Most economy class seats are 17"-18". Seat pitch was 37" which is slightly better than the 31"-34" norm for economy, but not by much. You basically paid first class price for an economy-plus class seat. But the service, speed, and experience were top-notch. I'm sad I never got a chance to fly it, but don't kid yourself - it simply wasn't economically competitive with regular air travel.

    18. Re:Good by nojayuk · · Score: 2

      Yes, slowing down the air to subsonic speeds was the job of the nacelle structure in front of the engines on Concorde. It means high-bypass turbofans like the RR Trent 900 and GE-90 couldn't easily be used for supersonic flight since they provide a lot of their thrust by propelling air using the big fandisc driven off the jet turbine in the middle.

      Supersonic fighters and such use low-bypass fans but they're not very efficient at transonic speeds since the fanblades don't work well in that regime. The benefits are in subsonic cruise and loiter mode where fuel economy and performance are improved over a pure jet design.

  4. "doesn't seem particularly realistic"? by G3ckoG33k · · Score: 3, Insightful

    "doesn't seem particularly realistic"?

    Huh? Sun Tzu: Never underestimate your opponent

    1. Re:"doesn't seem particularly realistic"? by Anonymous Coward · · Score: 2, Insightful

      Not to mention that Russia has always been on the forefront of aerospace technology. Their lists of firsts is unrivaled. It's very possible that they might succeed where the Americans have failed.

  5. Oooh! Cold War II!! by Anonymous Coward · · Score: 3, Insightful

    With the Military Industrial Complex as The Winner. Gotta insure that nothing stops the river of cash flowing into "defense" (on either side.)

  6. Didn't we go through this fast-bomber thing? by Anonymous Coward · · Score: 3, Insightful

    XB-70 Valkyrie on our side, and the Soviets had something along those lines as well.

    Then surface-to-air missiles showed up, and it became clear no bomber could hope to outrun them, so we went with low-observable and/or terrain-following tech. Remember, it's easier to make a missile capable of X speed (just a motor, a warhead, and fuel for one quick interception) than a bomber flying X speed (many warheads, release mechanism, crew, and fuel to carry all that stuff a thousand miles), so you need a massive technological edge to win.

    So... does Russia really think they can make hypersonic bombers, but some enemy that's worth using them on can't make even faster hypersonic SAMs?

    1. Re:Didn't we go through this fast-bomber thing? by Baloroth · · Score: 4, Informative

      There are other uses to a hypersonic aircraft than simply dodging missiles. The ability to arrive on target in minutes instead of hours, for example. Plus, even if the bomber isn't technically faster than the missile, missiles have limited fuel capacity and require a certain reaction time before they can be fired, so if you can build a bomber fast enough, by the time the missile is fired it can't reach you before it runs out of fuel. This is even more true if you are traveling at extremely high altitudes. If you have a bomber traveling at Mach 5 (1 mile per second, roughly) and a missile traveling at Mach 6 launched at the bomber when it is 20 miles away (easily possible for a high altitude bomber to hit a target that far away), it will take 100 seconds to hit, in which time the missile must travel 120 miles, which is outside the range of, say, a Patriot missile (which travels at Mach 5). And the higher the speed, the more fuel it takes for the same distance. A bomber can afford that. It's a lot harder for a disposable missile to do the same.

      --
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    2. Re:Didn't we go through this fast-bomber thing? by Baloroth · · Score: 2

      Only if they're within minutes travel of the target - otherwise, it's still an hour or more. Hypersonic is fast, but it's not magical.

      Hypersonic planes (such as the X-51A) can travel at 4,000+ MPH. Stationed at a remote base for the US or nearly anywhere in the country for the Russians they can hit any target within 2,000 miles (thats considerably more than the distance between Moscow and London or Tel Aviv, for reference) in 1/2 an hour. That would take 3 or more hours for a subsonic aircraft. So yes, minutes instead of hours.

      And at that speed, even a long range (270 mile or so, such as the AN/TPS-75 radar the Air Force uses, and thats pretty long range. The AEGIS radar system is less than half that) radar system will only give you 4 minutes of warning, which while more than enough time to react for an automated system, would be pretty hard to react to if humans had to be involved (such as would happen in a first-strike scenario). And hitting a target from the front that is traveling at 1.7 km/s is a bit of a problem. The US spent $700+ million developing a missile system capable of shooting down SCUD missiles traveling at speeds less than that (Mach 5). They pulled it off after decades of work... but those are ballistic missiles. I.e., they don't turn after launch, which means they are a really really easy target to hit by comparison. A guided plane traveling even faster is a considerably harder target.

      That sound you heard is the OP's point whooshing about a mile over your head. Bombers can't afford to do that.

      ...yet. Jet and plane technology has come quite a ways since the 1960s, and what was impossible then with technology of the time might well be do-able today.

      --
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    3. Re:Didn't we go through this fast-bomber thing? by bobbied · · Score: 2

      >

      So... does Russia really think they can make hypersonic bombers, but some enemy that's worth using them on can't make even faster hypersonic SAMs?

      The Russians are not stupid so no, I'm sure they know full well this idea is folly. However, this fits with their recent uptick in hostile behavior where they are testing the US military responses and ratcheting up the "cold war" type behavior. Recently they had an attack sub in the Gulf of Mexico for a month (then told us about it) and at the same time they had a bomber test our air defenses by flying into our airspace. They are also trying to get navy bases set up in Cuba and Venezuela claiming that their sailors need places to rest and repair their ships. (Yea, right off our coast line where a cruse missile could arrive the mainland pretty much undetected...)

      They are starting to smell blood in the water with the up coming budget issues coupled with doubt about the next election. They are getting ready for the decline of the USA military power and positioning themselves to take advantage of the situation. This is just rhetoric designed to see how the public and the military will react. They know it's a foolish idea..

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  7. Oh Russia by mumblestheclown · · Score: 5, Funny

    You know, because a dictatorial kleptocracy with no political ideology to speak of and which is ranked #53 in per capita GDP needs to defend itself against brave young women in punk bands with these.

    1. Re:Oh Russia by shutdown+-p+now · · Score: 3, Interesting

      needs to defend itself against brave young women in punk bands with these

      Haven't you heard? The so-called "brave young women" are agents provocateur on CIA payroll, with the goal of destabilizing the country and causing a revolution that would cause it to splinter, so that individual pieces can then be overrun by NATO and China to extract their precious natural resources, using local population as slaves. Don't you watch RT?

      (also see this - and never underestimate the power of propaganda)

    2. Re:Oh Russia by jpapon · · Score: 4, Insightful

      Never mind the fact that we have perfectly good ICBMs which can do the job of a hypersonic bomber perfectly well, thank you very much.

      --
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  8. Wouldn't you rather play a nice game of chess? by xxxJonBoyxxx · · Score: 4, Funny

    >> Wouldn't you rather play a nice game of chess?

    No. Let's play thermonuclear war.

    >> Fine.

  9. Cheapter and easier by scorp1us · · Score: 4, Insightful

    Given that the ISS is ~360 km from the Earth, and it has a 92 minute orbital period, it seems that bombs could be lifted into space, then launched from there. With sufficient supplies and advanced notice you could get enough stuff in position over the long term and deploy in minutes 4500mph = 2km/s and therefore could be at the surface in 180 seconds (3 minutes) once launched. Then there's the issue of changing orbit, which lets assume takes 1 orbit. So you can stike anywhere in the wold in 95 minutes. Can you fuel, prep and deploy a plane in that time? I think not.

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    1. Re:Cheapter and easier by Nkwe · · Score: 2

      Given that the ISS is ~360 km from the Earth, and it has a 92 minute orbital period, it seems that bombs could be lifted into space, then launched from there. With sufficient supplies and advanced notice you could get enough stuff in position over the long term and deploy in minutes 4500mph = 2km/s and therefore could be at the surface in 180 seconds (3 minutes) once launched. Then there's the issue of changing orbit, which lets assume takes 1 orbit. So you can stike anywhere in the wold in 95 minutes. Can you fuel, prep and deploy a plane in that time? I think not.

      Of course you have to get the bomb through the atmosphere and to the intended target without it burning up or exploding on the way down. The bomb would need to be in essence a re-entry vehicle. A lot of stuff can go wrong - like missing your target or filling the atmosphere with something toxic and widespread.

    2. Re:Cheapter and easier by geekoid · · Score: 2

      "I think not."
      Think again.

      You'r mistake is thinking it would be 1 plane. It would be several located around the world, always in operation.

      A space platform is an easy as hell target to hit, and you can't keep it secret.

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    3. Re:Cheapter and easier by fm6 · · Score: 3, Insightful

      I think if anybody started positioning atomic weapons in orbit, people would get uptight. Maybe uptight enough to launch a pre-emptive strike.

    4. Re:Cheapter and easier by Chris+Burke · · Score: 2

      Indeed they would.

      Not that you need nukes to wreck things from orbit. A dense, sturdy object that's going at orbital velocity would itself pack the punch of a nuke (from tactical to strategic size depending on mass of impactor). Project Thor was the U.S. military's exploration of the idea.

      --

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    5. Re:Cheapter and easier by alexander_686 · · Score: 2

      You don't need bombs - you need Thor's hammer

      http://en.wikipedia.org/wiki/Kinetic_bombardment#Project_Thor

  10. Re:I want by aaaaaaargh! · · Score: 4, Funny

    Why do you want a million dollars?

  11. Re:Russianized XB-70 by jandrese · · Score: 2

    The real issue is: Will the Russian government be willing (and able!) to sink the billions of dollars worth of rubles into this project over the 20 or so years it will need? The 2020 date is crazy, this is a new frontier, 20 years is more likely, and only if there is full an continued support from the government.

    --

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  12. The Russians Need to Prove... by fm6 · · Score: 4, Funny

    ...that they're still a world power. That means building a lot of expensive, useless weapons, because that's what world powers do. Ah, for the good old days, when you could just round up the slaves and put up a pyramid!

    1. Re:The Russians Need to Prove... by fm6 · · Score: 2

      "Effective deterrent"? What, their current ability to obliterate the planet isn't enough?

  13. Checked Craigslist? by macraig · · Score: 5, Funny

    Russia Wants a Hypersonic Bomber

    What a coincidence! I happen to be selling one on Craigslist right now.

  14. Re:I want by Anonymous Coward · · Score: 2, Funny

    I want a million dollars so I can buy the best oats for my pony.

  15. Want a bomber? Here's one... by MiniMike · · Score: 3, Insightful

    The Russians want their plane operational by 2020, which doesn't seem particularly realistic — we are talking about five times the speed of sound here, and Russia is just starting engine development. The U.S., meanwhile, has been investing in its Waverider program since 2004, and the last test of the X-51A scramjet-powered missile failed after just 15 seconds.

    Maybe they'll be funding computer hacking/espionage methods instead of scramjet or hypersonic airplane development- that way, they'll have a hypersonic bomber (plans, at least) soon after we do, at a fraction of the development costs.

    Or maybe they'll just think they have the plans.

  16. 2020 Timeline by aardwolf64 · · Score: 2

    Of course, that timeline depends on them discovering alien technology in 2019 and not destroying it until 2020.

  17. Could be too costly by gmuslera · · Score: 4, Funny

    Please, don't do it with rounded wings, not sure how much it will cost to build it, but the lawsuit could be in the order of billons of dollars.

  18. Time to take the Sprint out of mothballs by Quila · · Score: 2

    Early 1970s technology, 0 to Mach 10 in 5 seconds, intercept at 30,000 meters in 15 seconds. There is just no way a modern hypersonic jet could outrun even that 40 year-old tech.

  19. Re:Russianized XB-70 by Jeng · · Score: 2

    As long as the money is siphoned off to cronies then yes the Russian government will be more than happy to sink billions of dollars worth of rubles into the project for 20 years or so, in fact they may be able to go for 40 years, but nothing is getting off the ground.

    --
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  20. Manned hypersonics are a ways off... by sugarmatic · · Score: 2

    Manned hypersonic flight is a long ways off.

    An 'unstart' on a hypersonic vehicle would decelerate ridiculously fast, potentially crushing the occupants (10's of G's). This is one reason why the US scramjet experiments have faced difficulties. The break even pressure ratio in the combustor is very difficult to achieve. If you aren't at a break even pressure ratio, you can't produce enough thrust to overcome drag; this means the vehicle begins slowing down (fast), making it even harder to achieve a break even combustor pressure ratio, etc. This failure happens in a matter of milliseconds: a sudden loss of thrust while travelling at speeds that generate fantastic amounts of drag, meaning fantastic deceleration follows.

    For the Mercury capsules, for example, if the main engines were to suddenly stop at maximum pressure velocity, the entire structure would decelerate at nearly 15G's. If the capsule alone were to be released at that point, the loads would increase to cause the occupant to be unambiguously crushed from deceleration due to getting rid of the momentum of the rest of the rocket. The Mercury rockets included an escape tower that not only got the capsule away from a malfunctioning rocket, but provided thrust to allow the capsule to decelerate at survivable levels.

    Unstarts with supersonic test planes and production planes have resulted in some injuries from the sudden loss of thrust at high speed.

  21. Re:How far behind US technology? by ModelX · · Score: 3, Interesting

    So with the Russians just starting on hypersonic engine design, looks to me like they are only 15 seconds behind the US :)

    Or maybe not, according to wikipedia they were doing something 20+ years ago:

    First working scramjet "GLL Holod" in world flies on 28 November 1991 reaching speed mach 5.8. However, the collapse of Soviet Union stopped the funding of the project.

    After NASA's NASP program was cut, American scientists began to look at adopting available Russian technology as a less expensive alternative to developing hypersonic flight. On November 17, 1992, Russian scientists with some additional French support successfully launched a scramjet engine "Holod" in Kazakhstan6. From 1994 to 1998 NASA worked with the Russian Central Institute of Aviation Motors (CIAM) to test a dual-mode scramjet engine and transfer technology and experience to the West. Four tests took place, reaching Mach numbers of 5.5, 5.35, 5.8, and 6.5. The final test took place aboard a modified SA-5 surface to air missile launched from the Sary Shagan test range in the Republic of Kazakhstan on 12 February 1998. According to CIAM telemetry data, first ignition of the scramjet was unsuccessful, but after 10 seconds the engine was started and the experimental system flew 77s with good performance, up until the planned SA-5 missile self-destruction (according to NASA, no net thrust was achieved).

    Some sources in the Russian military have said that a hypersonic (10-15M) maneuverable ICBM warhead was tested.

  22. Russia wants... by Anonymous Coward · · Score: 2, Funny

    and I want a PONY!

    no, wait, a UNICORN!
    a well-hung unicorn.

  23. Re:Star Wars 2.0 by alphred · · Score: 2

    You've got it backwards. America's only real enemy now is it's own paranoia. It is the one sinking "billions upon billions" into weapons and systems that they will probably never use. The rest of the world (Russians, Iranians, random terrorists, whatever) only has to keep promoting semi-plausible "threats" that cause more spending and the inevitable bankruptcy that will follow.

    A strategy that worked great for America in the Cold War and is now working against them.

  24. Re:Patton was right. by shutdown+-p+now · · Score: 2

    No, not really. They were softened up nicely in 1941-43, but by the end of 45 were pretty much fully recovered as far as war capacity was concerned. In fact, the USSR was in a better shape by then, because it had all its heavy industry restored and running at full capacity, but this time tucked away safely at Urals, where no German (or American) bomber could have reached. 10 million in casualties sounds pretty bad, and it was, but there were still considerable manpower reserves - we're talking about a country with a population of 170 million (as of 1946).

    It also had officer corps that had learned through bitter experience on how to properly run massive defensive and offensive campaigns on land, something that US military didn't have because of the different nature of its conflict with Japan. Due to the geography of Soviet Union, any invasion against it would be focused primarily on land, with naval warfare not playing any considerable part in this equation. Coincidentally, this is also why Russia and USA would have a hard time taking at each other even today - one is a naval empire and the other is a continental one, so they're each strong at something that is precisely the wrong thing to use against their opponent: one has a massive land army, the other an overpowered navy.

  25. Re:Russia can "want" anything, but by Required+Snark · · Score: 2
    Are you sure that you're not talking about the USA? Lets revise that last paragraph.

    The crooks and thieving bankers who run the USA don't actually need any science or technology. They just need to be in the close proximity to government bailouts to saw off their share while nobody is looking.

    --
    Why is Snark Required?