Japan Solicits NASA's Help on Supersonic Jet
An anonymous reader writes "Since the Concorde supersonic jet is now retired, Japan is looking for the next generation supersonic flight solution. Japan's space agency is planning talks with NASA next month. They are looking for a partner since they have experienced a 'string of glitches, including a nose cone problem during the latest test flight in March.'"
Think how much money, time & effort could be saved if resources were pooled. (maybe this thing would be ready before 2025).
I guess we'll all have to learn to get along first (oh & hopefully, the cooporation will be more equal then it was on the Joint strike fighter project between Britain & the US)
There are shills on slashdot. Apparently, I'm one of them.
When last I heard about this issue, it was considered completely feasible to develop a sub-orbital passenger service for those super-premium customers who would otherwise spend some $3000 US on a concorde ticket.
Further, considering the resources required to maintain the concorde, which is reportedly the norm for such high performance aircraft, I see no reason why it wouldn't be more cost effective to move forward with the concept.
Granted the maintainance would need to be even more intensive and exacting, but rather than 2 hour transcontinental flights it would be on the order of 30 minutes, allowing for more time in maintainance between trips and creating a more compelling reason for those who consider time more important than money.
VLC FOR MAC IS DYING! IF YOU DEVELOP, PLEASE SAVE IT!!
solly...
Number of reasons, fuel costs being high and rising, low passenger numbers after 9/11 and the fact that Airbus refused to renew the maintenance and parts contract that was due to expire. Normally, aircraft maintenance would be picked up by a third party in that case, but with only 12 aircraft in an airworthy state, and not all of them flying, it wasnt cost effective for the normal maintenance companies to step in.
Nova had a great show on the history of the Concorde recently and talked in detail about why it went under. Though there were many reasons, I was a bit suprised that one of the main reasons was that 40 of their most regular customers died in the World Trade Center. Though the number does not seem that high, these same people also allowed other execs in their company to fly which really hurt the concorde.
It crashes if it hits a bit of wreckage that some idiot left on the runway.
It's true I tell you, feller at work's next door neighbour read it in the paper.
Why can't the 'DESIGN' of the Concorde be shared? That's got nothing to do with the economics and all these speculative conspiracy theories.
It appears the single largest cause for the failure of the Concorde was bad management, not bad design.
If you keep throwing chairs, one day you'll break windows....
Simply too expensive. The accident was just an excuse.
What'd make the Japanese hope the NASA design would lead to a cheaper product?
Five reasons already for my question, and ALL DIFFERENT! Really mysterious, it appears.
If you keep throwing chairs, one day you'll break windows....
Here is an article about the concorde retiring
EXCERT
"The airline said that its decision had been made for commercial reasons with passenger revenue falling steadily against a backdrop of rising maintenance costs for the aircraft.
Detailed discussions over an extended period with Airbus, the aircraft's manufacturer, confirmed the need for an enhanced maintenance programme in the coming years, the carrier added.
British Airways has decided that such an investment cannot be justified in the face of falling revenue caused by a global downturn in demand for all forms of premium travel in the airline industry.
The downturn has had a negative impact on Concorde bookings and is set to continue for the foreseeable future, according to the airline."
Consumers need a super sonic jet just about as much as they need a 300kph Ferrari. It wasn't practical with the Concorde and it won't be pratical now. Planes cost too much already, an Airbus A380 goes for $300,000,000 USD. I don't see how Japan expects some plane that won't fly until 2025 at the earliest, to transform their aerospace industry. People aren't going to pay the premium ticket price if the plane is ever finished just like few paid the steep ticket cost of the concorde. It seems this money could be better spent on current planes that are actually economically feasible for airlines to fly.
" We don't need to find the weapons of mass destruction we just need to want to find them, that's the way it works!
Even an unequal cooperation can have enormous benefits. Look at Canada and the US with regards to nuclear research. Canada didn't get any bombs out of it (not that we particularly need any when our allies are armed to the nuts with them), but our scientists saw enough of the action to later on make us a leader in nuclear power. Having some of the world's biggest uranium deposits helps, of course, but still. An unequal partnership, if leveraged properly, can be just awesome. It's definitely better than no partnership at all, especially for wee little nations like the aforementioned Canada.
Haven't the British and French teams who designed and built Concorde got the best experience?
Because its too small - it was only designed to seat 140 passengers, and under todays economics that simply is not enough. Oil today is touching $100 a barrel for aviation requirements and that produces a CASM (cost per average seat mile) thats pretty much unsustainable even for the wealthy. The aircraft needs to me bigger and carry more people and cargo (which produces a substantial income for airlines on most routes).
Aviation has moved on considerably since Concorde was designed in the 1960s, and much more efficient and wider fuselages can be designed today to accomodate a lot more passengers with lower drag.
Rolls Royce are also on record saying that there would be little improvement efficiency wise in newer turbojet and turbofan engines over the engines Concorde used, those engines were as efficient as they can be made even with current technology. The efficiencies seen elsewhere in engine design do not scale all the way up to engines capable of sustained mach 2.
There were a lot of reasons for Concordes retirement. The Japanese approach uses different engine technology so it can achieve a different efficiency, which is the main reason for any retirement of any aircraft type.
A little bit of mental morphing of the image could transform it into the pre-Federation Enterprise (NX-01). Will the Vulcans make first contact in Tokyo?
I read that link......and...I'm...lost for words. Maybe I'm not so much of a geek as I thought I was?
Something with an aerospike engine would be nice...Or not.
has a web page offering an artist's rendition of the supersonic jet plane
:-)
Just an artist's rendition? How about a video of the prototype taking off instead?
There are shills on slashdot. Apparently, I'm one of them.
Concorde was expensive, it's true. That's because it used an afterburner to fly through the atmosphere like a fighter jet.
But space planes which cruise above the atmosphere in a series of bounces sound efficient to me. Once you reach cruising altitude, you can fire the engine a short burst every so often to maintain altitude. Since you're so high up, air resistance should be rather low.
I'm no aero engineer, but it seems like it could be cheaper than Concorde as well as faster. I'm not sure what the cost would be relative to a 747. But Tokyo to LA in 3 hours should allow them to charge a lot more for the tickets, so perhaps it's economic. Also, I reckon there are enough super rich people in the world for a few supersonic planes, regardless of how economic they are.
echo -e 'global _start\n _start:\n mov eax, 2\n int 80h\n jmp _start' > a.asm; nasm a.asm -f elf; ld a.o -o a;
A little bit of mental morphing of the image could transform it into the pre-Federation Enterprise (NX-01). Will the Vulcans make first contact in Tokyo?
I know I'm going to regret mentioning this.... but,
First contact with the vulcans was made with the Phoenix, not the NX-01.
Suddenly, the hairy finger of a familiar monkey tapped me on the shoulder. It was time.--G. T.
Commercial supersonic flight is dead. -There is just no way that you can get around the fact that it takes roughly two to three times the fuel per km flown to travel at supersonic speed. There are fairly fundamental reasons why there will be no significant advances in this area. A future supersonic jet transport might have a glide angle of 12:1 (concorde was ~8:1) while a modern commercial jet is over 20:1 and a future BWB is over 30:1 (some gliders hit 60:1). -The sonic boom prevents any overflight of populated areas and even if significant noise reduction could be achieved the very small constituency for such a service would still see any residual boom noise used as an excuse by the general (and envious) public to restrict or outright ban such overflight. - Exhaust emissions at 20km altitude (roughly double 10km of commercial jets) are of far greater environmental concern due to lower mixing rates with lower atmosphere, impact of water vapour as the number one greenhouse gas and proximity to the politically and environmentally sensitive ozone layer. -Technology really hasn't improved much in relevant materials or engines. Add to this the high costs of development, relatively restricted range and limited routes and you have a total non-starter.
In August 2005.
To sum up, the rationale for the Japanese to work on a supersonic transport is based on three assumptions:
1. The scramjet engine will reduce operating (read: fuel) costs per average passenger mile significantly below that of the Concorde (by supporting a larger plane and being more fuel-efficient at cruise),
2. The plane will be capable of nonstop trans-Pacific flight (an ability also largely due to the fuel-efficiency of the scramjet), and
3. The much longer trans-Pacific flights in which the Japanese are interested will more dramatically show the time-of-arrival advantage of the supersonic plane than the shorter trans-Atlantic flights of the Concorde, and make it more appealing to seat-weary passengers.
I suppose there is also a fourth assumption, that cheap, fast, trans-Pacific travel would greatly improve the national economy of Japan in general and the Japanese aircraft industry in particular. This is the reason the Japanese government is expressing interest.
Whether these assumptions turn out to be factual or not requires research, which the Japanese are now doing.
I now return you to your previously-scheduled discussion, already in progress.
I know this may be an unpopular point of view, but I recently flew to the Philippines with a layover in Taiwan. From San Francisco to Taiwan, it was a 14 hour flight. That sucked. It sucked big time. I don't know how much extra I'd have had to pay for a supersonic flight, but it may have been worth it. It would be interesting to know whether all the people posting comments about what a waste of money this is have ever flown nonstop to Asia.
All this talk of supersonic passenger jets, great nice, but it will never be economically feasible, certainly not with the $100/barrel oil prices. What would be much more appreciated by the market and politicians is ultrasonic or anti-sonic jets. Anything that kills the noise of jets
Use Adsense for Charity
Concorde only used afterburner at take-off and acceleration to supersonic. Once it reached cruising speed (mach 2) they could turn the afterburner off.
Don't underestimate Japan Space Agency. They are the guys who invented the Ramen Noodles, together with agency that invented Velcro they are bound to create something revolutionary.
That's because it used an afterburner to fly through the atmosphere like a fighter jet.
Actually, it didn't. The afterburners were only used on takeoff, and during the accelleration from Mach 1 to about 1.7. For the second part, afterburning wasn't strictly necessary, but turned out to be more efficient than accelleration on dry thrust.
Can't find good data on required runway length, but Concorde typically took off at 400 km/h, which is rather high. Accelleration from dry thrust may not have been enough to achieve 400 km/h on a typical runway.
IOW, people who refer to the F-22's supercruise ability as something new or unique, are wrong. Concorde could do this. (So could the English Electric P.1, prototype for the EE Lightning, by the way).
Why was the Conconrde retired
British Airways made over GBP1bn from Concorde, Air France made a loss. AF wanted out but the agreement with BA said neither side could unilaterally stop flying concordes and BA were making money so...
Concorde's airworthiness certificates were owned by Airbus via aquisitions over the years and Airbus under pressure from AF withdrew the airworthiness certificate thus grounding the lot. To guarantee it stayed that way and couldn't be reversed, all the spare parts were sold off/auctioned on Ebay.
BA were particularly annoyed because Airbus had told them it was OK to go ahead and spend some GBP70m (ish) refitting their fleet and bringing them up to date, just before they were finally grounded.
I want a list of atrocities done in your name - Recoil
Great idea, lets all lay down our arms, hold hands and sing songs about peace and love.
I called for greater international coorporation (in a non-military context even). Nothing more, nothing less.
You're entire reactionary, pro-military, knee-jerk rant was irrelevant - but I have to reply to a couple of points.
Our military has a greater responsibility than you could possibly fathom. You weep for wasted expenditures, and you curse the marines. You have that luxury. You have the luxury of not knowing what the military knows.
You say 'Our' military - but I am not British (or French/Iranian/US/whatever you are), I come from & live in countries that are small, have minimal military budgets & rely on good relations for defense.
That military spending, while tragic and excessive, probably saved lives.
Uh huh. I feel safer allready (btw, if I was an Iraqi I'd definitely be disagreeing with you)
Either way, I don't give a damn what you think.
You obviously do - or you wouldn't have posted.
There are shills on slashdot. Apparently, I'm one of them.
Don't forget about the accident and the grounding - these didn't help much. IIRC they had to do work on the engines while it was grounded to get their airworthiness certificate back as it was possible that the 2 engines on each wing weren't protected well enough from each other during failure.
Time is an illusion. Lunchtime doubly so. - Douglas Adams
For those who can afford it its great, for the vast majority of the world's population, they will never fly on it.
Should taxpayers have to fund NASA supersonic jet projects that they will never fly on?
Then again, the money is better spent here than say some new WMD.
He who knows best knows how little he knows. - Thomas Jefferson
So you live in a country like kuwait of 1990 perhaps?
Please either reread my comment - particularly the line rely on good relations for defense. or understand a little history - particularly the sort of relations Kuwait had with its neighbours in 1990.
Personally, I tend to like the swiss model. Have good relations with everybody and have a good mliitary.
Swiss are completely different - they're a neutral country (not even a part of the UN) and hard to compare. As for a 'good military'...well it aint so expensive.
Swiss military expenditure 1% of GDP
US military expenditure 4%+ of GDP" (interestingly, slightly less then Kuwait you mentioned earlier.
Where we go wrong is that we have presidents who every so often have to prove something or they want something such as oil. Then we throw out might around (basically a bully or being greedy).
I'm afraid more then 'every so often'.
There are shills on slashdot. Apparently, I'm one of them.
Sorry....just woke up, haven't had my jet fuel yet.
He who knows best knows how little he knows. - Thomas Jefferson
Current scramjets are very small pilotless machines that fail half the time, don't work below mach 5 and are crashed on landing. It seems quite a lot of work needs to be dont to make a commercial scramjet. 2025 seems ambitious for getting it done.
How do they intend to get the thing started? Can scramjets work at slower speeds with more development? Will they strap a load of booster rockets on the back?
In soviet russia stale jokes recycle you!
Well, I'd look at it this way.
You're the smartest kid in the class. Your project is 75% done.
The other kids, not from perhaps as nice a home as yours, without your rich parents and ample access to resources, are only 10-50% done.
What possible motivation could you have for handing your project materials over to the others, to help them get theirs done? Note: before you answer, please remember that as far as I know, nobody (no landlords, grocers, car dealers, universities, doctors, etc) let you pay for anything with "good karma".
Because in the real world, people have to have reasons and motivations to do things. This project is progressing on multiple fronts because a multiple of people see that there is commercial/scientific/national opportunity in it. If those are the motivations for pursuing the projects in the first place, how could any of them be advanced by 'pooling' resources (in any way that would be an advantage to the leader).
And lest you cast the US as the sole bogeyman here, I'd be just as interested to see if the people that are second-most-advanced would be willing to share their tech with the 3-4-5th most. (Although there, there is at least the motivation that perhaps together they could be first, and thus gain the benefits of first place, which none of them probably will reach alone....)
-Styopa
Scramjets at Mach 5+ are nice, but what about the Unobtainium needed to actually build a large airframe that suports that kind of speed?
Since when does pissing of your biggest neighbor (by suddenly demanding back the money you financed the war with between him and the big neighbor across the gulf and slant drilling for oil under his soil) count as "relying on good relations"?
Lars T.
To the guy who modded me down from perfect to terrible Karma - Apple haters still suck
Competition brings to light solutions that one particular team might elimiate via a trade study by valuing the wrong thing in a trade. Competition is good. Especially in (still) developing fields like high-speed combustion. There is no right and wrong or "My way or the highway (Yet...). We know "In theory" this is how it should be built but "In practice" it is very different. The best tradeoff might be a worse design than the second best tradeoff due to a parameter that was neglected by the engineers. Competition is essential.
... there are a **lot** of people who would like to talk to you.
LEO time to orbit is about 90 minutes, so that is 45 minutes to make it halfway around the world (or to just about anywhere from anywhere if you think about it). In order to make a suborbital hop "on the order of 30 minutes" you'd have to do orbital velocity...
According to my selective memory, Concorde failed because the US, Boeing etc realised that Britain and France had stolen a march on the next generation of aerospace technology. Looking for an excuse to avoid being left behind, they proceeded to campaign bitterly that supersonic flights would be continuously breaking windows in peoples houses everytime they flew overhead and that the environmental damage would be disastrous. This limited the number of routes and carriers that would accept Concorde and in the end only British Airways and Air France ran a token fleet. See here for more neutral reporting.
Granted, Concorde was a noisy beast especially on take off and I believe there was a regulation preventing them from going supersonic over land but it was a superb feat of engineering (the only commercial aircraft to have an afterburner) especially considering that they were designed to fly for 15-20 years and ended up doing almost double that (with extensive maintenance).
At the end of the day, the Airbus A380 is going to carry around 800 people at far greater scales of economy and comfort than any future civilian supersonic aircraft. It would be nice to have one, but haven't airlines already committed to larger and more economic than smaller and faster ?
Also, Japan must partner, otherwise they'll hit the same problems the British and French had, back in the day.
NASA is fully preoccupied with finishing the space station for our international partners and developing the CEV and new lunar landing infrastructure. NASP, X-33, Boeing's Supersonic Airliner.. There will be no major expendatures on yet another pie in the sky aerospaceplane. The justification is pretty weak - Tokyo to L.A. It sounds more like a bumbling attempt to grab technology from the US.
an ill wind that blows no good
Why exactly is "Japan is looking for the next generation supersonic flight solution"? They didn't much use the one(s) before.
Lars T.
To the guy who modded me down from perfect to terrible Karma - Apple haters still suck
Uh, the F-22 is the first aircraft to intentionally be designed for supercruise...the Concorde was an accident.
I find that hard to believe. In the EE P.1, this ability might have been accidental, but by the time Concorde was designed, the physics involved were understood well enough that it was possible to design for supercruise.
Had Concorde been unable to supercruise, its range would have been halved (4 hours at Mach 2 instead of 8).
Likewise, Concorde's Mach 2.04 cruise speed was no accident: at that speed, you've got a 'sweet spot' in the speed/power required curve.
IOW, people who refer to the F-22's supercruise ability as something new or unique, are wrong. Concorde could do this. (So could the English Electric P.1, prototype for the EE Lightning, by the way [thunder-an...ings.co.uk]).
So could the F-14D and the later versions of the F-15.
In theory, there's no difference between theory and practice. In practice, there is.
Of course you can only fly out of each airport once before you have to repaint the plane to disguise it! Eventually all that extra paint will slow down the plane... hmmm maybe you are right. Oh! I know - don't use paint! They can change colors with sharpies!
This issue is a bit more complicated than you think.
So demand in Japan for a shorter trip to Saipan or Honolulu is so great that they're going to be developing a supersonic passenger jet because of it?
Wouldn't it be cheaper for them to open up a few shooting ranges domestically for vacationers to go to, or do they also want to be able to practice their English on the locals while playing Dirty Harry?
Wikipedia disagrees
The scramjet research for civilian transportation is a poor cover up for weapon research program. I mean getting something about the size of air-to-air missile is not technically feasible at this stage. Getting a 767 size scramjet is at least decades away. I doubt if it is a rational strategy for any country which cannot make a sizable passenger jet at this moment to take on such a massive project right at start. Most are probably aiming to or tracking the technology that can allow them to develop the next generation of spy-plane/ air-to-air/ cruise missile. The military spending of Japanese government is second in the world. It is not at all as peace-loving country as perceived by many.
Fuck! I thought it sounded familiar but I haven't seen that movie in years.
Time makes more converts than reason
(active/total)
r es.htm says differently. Our 4th graders made the best showing of all the categories, coming in at #12. However, it is an incomplete list of countries. Singapore, Korea, and Japan, who dominate grades 4 and 8, are absent from the 12th grade list. However you look at it, it's bad.
United States 5,735/9,960
Russia (formerly the Soviet Union) 5,830/16,000
United Kingdom France 350
People's Republic of China 400
India 75-110
Pakistan 65-110
statistics provided by the Natural Resources Defense Council
As for brains, http://4brevard.com/choice/international-test-sco
Regardless, we do have the advantage of having done things with space no other country has... but back in the 60s and 70s. Innovation in the U.S. has been dragging for decades, we should and easily could have had a manned base on the moon and on Mars by now, and we could even have been in good shape to start mining the asteroids. I look at America's space program, and I see not only all the great stuff we've done, but all the really great stuff we could have done and haven't.
Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to conviction
Ha!
What's going to happen with the A380 is the same thing that always happens with new passenger jets: it'll be shown and sold with "generous legroom, fully-reclining seats, and a lounge" and in a year or two the airlines will have "increased their efficiency" by adding sixteen rows of seats, reducing the leg room to 12" per row and replacing the "lounge" with more first-class seats.
Riding the A380 is going to be like riding the train in India, you'll just get to your destination faster.
Interested in a Flash-based MAME front end? Visit mame.danzbb.com
United States 5,735/9,960
Russia (formerly the Soviet Union) 5,830/16,000
United Kingdom France 350
People's Republic of China 400
India 75-110
Pakistan 65-110
Those are some wacky statistics there. Can you provide a link? Any collection of nuclear statistics that leaves off Israel's large arsenal (third to fifth largest in the world, depending on which estimates you look at) is rather messed up. Also, it's important to know how many are mated to long-range delivery systems. For example, of China's nuclear force, they have under 25 DF-5s (their ICBM), and of these, not all are believed to have nuclear warheads on them.
Did he just go crazy and fall asleep?
Israel doesn't report how many nukes it has, IIRC. Anyway, here's the link:
t h_nuclear_weapons
http://en.wikipedia.org/wiki/List_of_countries_wi
As I said, they got their statistics from the Natural Resources Defense Council, published in the Bulletin of the Atomic Scientists. The article on Wikipedia states, concerning Israel, that:
Israel is not a member of the Nuclear Non-Proliferation Treaty and refuses to officially confirm or deny having a nuclear arsenal, or to having developed nuclear weapons, or even to having a nuclear weapons program. Although Israel claims that Dimona is a "research reactor," no scientific reports based on work done there have ever been published. Extensive information about the program in Dimona was also disclosed by technician Mordechai Vanunu in 1986. Imagery analysts can identify weapon bunkers, mobile missile launchers, and launch sites in satellite photographs. It is believed to possess nuclear weapons by the International Atomic Energy Agency. Israel may have tested a nuclear weapon along with South Africa in 1979 (see Vela Incident). According to the Natural Resources Defense Council and the Federation of American Scientists, they may possess 300-400 weapons, a figure which would put them above the median in the declared list.
So that's why, on the list, Israel is left off. They've got [some of] the bombs also, they just aren't talking about it. Incidentally, that would seem to indicate that Israel has a greater willingness to use nuclear weapons, since the U.S. and Russia have always used nukes as deterrents, and as such have no reason to keep hidden how many they have. To a point anyway, I'm sure there's plenty of unreported nukes on both sides. But Israel, by playing their nuclear cards very close to the vest, and not threatening with them, seem to indicate that they're saving them for a rainy day when they really need them.
I don't see why the statistics seemed so wacky. You thought we were the only ones?
Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to conviction
Now that you put it that way, it sounds like we in the States got ripped off! Yeah, well, we'll have our revenge. With global warming, how you gonna play hockey? Maybe if we had done all the work, we'd be farther ahead in nuclear power and you'd still have hockey.
The world is made by those who show up for the job.
Israel doesn't report how many nukes it has, IIRC.
Neither does China, for example, but they're on your list due to estimates. There's more information out there about Israel's nuclear program than China's (thanks in part to Mordechai Vanunu, who is fascinating to read about, by the way, but not exclusively due to him). Israel is actually top of the line on uranium isotope separation -- they did a lot of pioneering work on large scale LIS (Laser Isotope Separation), while we in the US are so backwards that we still have diffusion plants.
Did he just go crazy and fall asleep?
Blame the Natural Resources Defense Council, and complain to them. It's not my list, it's theirs.
Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to conviction
It's probably because most of us would rather watch a few good movies.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
Why the hell is a funny relevant movie quote modded troll?
Mod up, not down, and if you don't know the reference, pass it by. Sheesh. Your mod points could be put to better use modding up an insightful post someplace.
The Christian Right is Neither (Christian nor right). See: Matthew 23, Matthew 25, Ezekiel 16:48-50
Ah, the Lightning - two honking big engines with a couple of control surfaces stuck on the side and a man sitting in the inlet tract: the antithesis of Concorde. BTW, I take it we're going to keep quiet about the P1 that was down to normal reserve after seven minutes of an aerobatic display?
Keep quiet? Nah, the short range of the Lightning is legendary. That's more due to its lack of internal fuel tankage than because its engines were unusually thirsty.
The fact remains that the P1, and IIRC at least some production Lightnings (F.2A?) could reach Mach 1+ without afterburners.