Unmanned Aircraft Designed to go Mach 6 Crashes Over Pacific Air Force Says

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[h=1]Air Force's hypersonic test fails[/h] By Mike Mount, Senior National Security Producer
A hypersonic aircraft launched by the Air Force Tuesday spiraled out of control and was destroyed before it could reach its goal of speeding to 4,600 mph, Pentagon officials said Wednesday.
The third test of the X-51A Waverider was launched Tuesday off the California coast from a B-52 modified bomber aircraft and was to fly for 300 seconds, reaching hypersonic speeds of Mach 6, but only flew for 16 seconds, according to the Air Force.
Officials said a problem with a tail fin caused the missile-like vehicle to fly out of control before the main engine could be ignited, leading researchers to destroy it early.
"A fault was identified with one of the cruiser control fins. Once the X-51 separated from the rocket booster, approximately 15 seconds later, the cruiser was not able to maintain control due to the faulty control fin and was lost," said a statement issued by the Air Force.
It's unclear what, if any, information was gleaned from the test. According to the statement, "Program officials will now begin the process of working through a rigorous evaluation to determine the exact cause of all factors at play."
The Air Force plans to go public with details of the failed test in a few weeks, after researchers are able to analyze the data from the flight.
"It is unfortunate that a problem with this subsystem caused a termination before we could light the Scramjet engine," said Charlie Brink, X-51A Program Manager for Air Force Research Laboratory. "All our data showed we had created the right conditions for engine ignition and we were very hopeful to meet our test objectives."
The Air Force had four X-51A Waveriders and has tested three. Officials said they do not yet know when or if the fourth Waverider will be tested.
http://security.blogs.cnn.com/2012/08/15/air-force-hypersonic-test-fails/?hpt=hp_t1
 

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Mach 6? That's gotta be like what? 2, 3 hundred miles an hour?