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A new type of 'Ninja style' aircraft that spins 90 degrees in air for efficient faster-than-sound flight and "virtually zero sonic boom" has been granted $ 100,000 by NASA for further development.
Originally posted by Iron7
____________ needs to be disbanded and the private sector should take this over.
www6.miami.edu...
It means that the conventional N-wave could be replaced by a strong acoustic wave, which is expected to generate a much less impulsive force and hence noise.
Nasa doesn't expect the design to take off (in any sense) for at least 20 years, but said it wanted to fund concepts that might represent the future of air travel.
Originally posted by Phage
Sort of cool. The proposal paper says that the N-wave is sort of stretched out (in computer simulations).www6.miami.edu...
It means that the conventional N-wave could be replaced by a strong acoustic wave, which is expected to generate a much less impulsive force and hence noise.
For comparison. At 60,000 feet and Mach 1.5 the Space Shuttles produced a sonic boom with an overpressure of 1.25 lb/sf. This ship at the same altitude and speed would produce 0.3 lb/sf, about one forth that of the Shuttle. An old F-104 at 48,000 feet produced 0.8 lb/sf.
$100,000 won't go far (just more computer modelling) but it's not really a high priority project.
Nasa doesn't expect the design to take off (in any sense) for at least 20 years, but said it wanted to fund concepts that might represent the future of air travel.
www.huffingtonpost.co.uk...
edit on 9/3/2012 by Phage because: (no reason given)