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Cause of hypersonic plane crash revealed-Flying at 20 times the speed of sound proved too much for the top-secret aircraft. 'Impulsive shock wave
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[quote:Anonymous Coward 857470:MV8xODQ2ODQ3XzMwNzg3ODA0XzFBQUZFQ0I=] [i]I told them[/i] they should have used gorilla glue and some good duct tape...but they just wouldnt listen :chuckle: [/quote]
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It turns out that tearing through the atmosphere at 20 times the speed of sound is bad for the skin, even if you're a super high-tech aircraft developed by the government's best engineers at its far-out research agency.
DARPA, the Defense Advanced Research Project Agency, has made public its best guess about what might have caused its unmanned arrowhead-shaped Hypersonic Technology Vehicle (HTV-2) to suddenly lose contact and crash in the Pacific just a few minutes after slicing through the sky at Mach 20 last August: it was going so fast its skin peeled off.
After an eight-month investigation, DARPA concluded that even though the HTV-2 was expected to lose some of its skin mid-flight, "larger than anticipated portions of the vehicle's skin peeled from the aerostructure," the agency said in a statement Friday.
The agency said it expected the HTV-2, which goes so fast it can make the commute from New York to Los Angeles in 12 minutes, to experience "impulsive shock waves" at such speeds, but
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link to news.yahoo.com
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