If I knew then I wouldn't ask. tell us, we'll spoof your ip and wrap your house in tinfoil for you.
If I knew then I wouldn't ask. tell us, we'll spoof your ip and wrap your house in tinfoil for you.
why couldnt they just work with the sr-71 to make it more efficient like the old school f-14 keeps doing?
Originally posted by: pmoa
wait till you see the f-22 JSF joint strike fighter....that northrop and the government is working on
Lockheed
That what I wonder. Like I mentioned before I think they reached the threashold for heat and drag tolerances way back then.
Quatanium!!
i would still bet money that scramjets will become a viable reality within my lifetime. the x43a set a new world speed record of for jet-powered aircraft of mach 9.6 less then a year ago.
comparing the x43 to the sr71:
"In March 2004, the X-43A set the previous record of Mach 6.8 (nearly 5,000 mph). The fastest air-breathing, manned vehicle, the U.S. Air Force SR-71, achieved slightly more than Mach 3.2. The X-43A more than doubled, then tripled, the top speed of the jet-powered SR-71."
comparing the x43 to the sr71:
"In March 2004, the X-43A set the previous record of Mach 6.8 (nearly 5,000 mph). The fastest air-breathing, manned vehicle, the U.S. Air Force SR-71, achieved slightly more than Mach 3.2. The X-43A more than doubled, then tripled, the top speed of the jet-powered SR-71."
Mrvile
Lifer
- Oct 16, 2004
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Originally posted by: So
Originally posted by: pmoa
wait till you see the f-22 JSF joint strike fighter....that northrop and the government is working on
The F22 and the joint strike fighter (f-35) are two completely indepenent planes.
Right. The F-22 project is going to be cancelled (they were too expensive, and they kept crashing), and the F-35 will take its place. The F-35 keeps the same general structure. And none of them fly near the speed of the SR-71, so nothing to be excited about.
The Aurora I think is in an up-coming military/sci-fi thriller. Doubt its real.
Questioning the Raptor, are we?
Here's how it breaks down.
The F-15 is faster in a dead sprint. It'll hit mach 2.5. On full afterburner, and it will go through all of its gas in minutes at that throttle setting.
The F-22 tops out at around mach 2, maybe a little higher, but it can CRUISE at mach 1.8 ALL FVCKING DAY. There are only a few fighter planes in service that are supercruise capable, and none are the match of the F-22.
F-22 is also stealthy. F-15 is anything but.
That first point alone justifies the F-22. The second just makes the deal juicier.
According to the pilots that test flew them in mock combat, it is no contest. 1 F-22 Raptor > Multiple F-15 Eagles.
I think it was outdated because of technology advancements. The plane just used too much fuel to go that fast.
was that just because it needed it to go high speeds? would it have the same fuel consumption as if a conventional jet went on a normal speed?
Very good read there.
Also guys, the SR-71 was very unefficient. It leaked and burns most of it's fuel at takeoff, then refuels in air and has to reach a certain speed after that in order to expand enough to seal the fuel in. O_O
Without question. The F/A-22 is more manoeverable, more stealthy (read survivable), faster*, and has a longer range for both cruising and CAP profiles.
*The F-15 can fly faster than the F/A-22 in very short bursts.
The F/A-22 is going to go operational, it's not going to be cancelled. Too much money has been invested, and too many people are currently working on the project to cancel it now.
To get back on topic though, the only thing that mothballed the SR-71 is the collapse of the Soviet Union. None of the countries we consider to be 'hostile' ATM have the capability to shoot down a modern U-2, something which is more economical to fly. Should China or NK become more hostile though, the SR-71s are ready to come back into service.
It's the only plane where a valid SAM evasion technique is 'go faster'.
The SR-71 'consumed' more fuel sitting on the flightline getting ready to fly than it did actually flying. The plane was constructed with gaps in the body to account for thermal expansion at operational speeds. Fuel, and lots of it, would leak out these crevices while sitting on the flightline.
Good thing JP8 isn't flammable.
They never bothered to have it take off with a full tank, since as you said the seals do not expand until it had reached sufficient speed. Likewise, the weight was an issue, so it was more efficient to fill it after take-off.
scramjet aircraft have the potential to be much more efficent than modern aircraft. they use oxygen from the atmosphere to burn onboard hydrogen which leads to much lighter planes. the scramjet concept has been around for at least fourty years and only recently has made the jump from paper to reality. it is far too early to know how the technology will end up.
I guarantee that there are at least two more planes in service and five in development that we don't know about.
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