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Country Discussion Topics
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Mach 10, that's movin'
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tacon1    Posted 11-16-2004 at 18:06:29       [Reply]  [No Email]
050 GMT (7:50 p.m. EST Tues.)

Here is a release from NASA on today's launch:

NASA's X-43A research vehicle screamed into the record books today, demonstrating an air-breathing engine can fly at nearly 10 times the speed of sound. Preliminary data from the scramjet-powered research vehicle show its revolutionary engine worked successfully at approximately Mach 10, nearly 7000 mph, as it flew at an altitude of approximately 110,000 feet.

The flight took place in restricted airspace over the Pacific Ocean northwest of Los Angeles. The flight was the last and fastest of three unpiloted tests in NASA's Hyper-X Program. The program's purpose was to explore an alternative to rocket power for space access vehicles.

"This flight is a key milestone and a major step toward the future possibilities for producing boosters for sending large and critical payloads into space in a reliable, safe, inexpensive manner," said NASA Administrator Sean O'Keefe. "These developments will also help us advance the Vision for Space Exploration, while helping to advance commercial aviation technology," Administrator O'Keefe said.

Supersonic combustion ramjets (scramjets) promise more airplane-like operations for increased affordability, flexibility and safety in ultra high-speed flights within the atmosphere and for the first stage to Earth orbit. The scramjet advantage is once it accelerates to approximately Mach 4 by a conventional jet engine or booster rocket, it can fly at supersonic speeds, possibly as fast as Mach 15, without carrying heavy oxygen tanks, as rockets must.

The design of the engine, which has no moving parts, compresses the air passing through it, so it can ignite the fuel. Another advantage is scramjets can be throttled back and flown more like an airplane, unlike rockets, which tend to produce nearly or full thrust all the time.

"The work of the Langley-Dryden team has been exceptional," said NASA's Associate Administrator for Aeronautics Research J. Victor Lebacqz. "This shows how much we can accomplish when we manage the risk and work together toward a common goal. NASA has made a tremendous contribution to the body of knowledge in aeronautics with the Hyper-X program, as well as making history," he said.

Following launch of the Pegasus booster rocket from NASA's B-52B launch aircraft at 40,000 feet, the X-43A separated from the booster and accelerated on scramjet power to its intended speed. The mission originated from NASA's Dryden Flight Research Center at Edwards Air Force Base, Calif.

NASA's Langley Research Center, Hampton, Va., and Dryden jointly conduct the Hyper-X Program. NASA's Aeronautics Research Mission Directorate, Washington, manages it.


Clod    Posted 11-16-2004 at 18:32:19       [Reply]  [No Email]
I thought only rockets could fly in space because of lack of oxygen for jet engines.


mojo    Posted 11-16-2004 at 19:53:26       [Reply]  [No Email]
The scramjet can't get out of the Earths atmosphere because of the lack of oxygen, but it can propel a ship into space (slingshot)alot more economically and cruise to distant locations quicker and cheaper than conventional jet engines.
mojo
mdw


midway    Posted 11-17-2004 at 08:00:35       [Reply]  [No Email]
I heard someone on TV say that it could go from New York City to Los Angles in 20 minutes. That means you'll get there before you left. (leave NY at 10 am, get there at 7:20 am.)(Would that mean you'd lived a double life?)LOL


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