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X-51A WaveRider hypersonic mission doomed by bum missile fin
The latest attempt to go past Mach 5 with the X51A has finished badly again, as a broken fin caused the missile to lose control before its air-breathing "scramjet'" motor could even kick in. It happened just after the booster rocket phase, which accelerates the craft to at least Mach 4, a high enough velocity for the hypersonic scramjet to work. The craft ended up in the Pacific shortly afterwards instead, and this latest affair may end up dunking the entire $300 million program. The Air Force initiative is already short on funding, and the previous two tries were equally dismal failures -- meaning a fourth missile, already built, may end up a museum piece.
X-51A WaveRider scramjet hits Mach 5, sets record for longest hypersonic flight
It might be a bit difficult to make out, but what you're looking at above is the X-51A WaveRider scramjet in the process of setting a record for the longest hypersonic flight. That happened around 10 a.m. on May 26th, when the rocket was dropped from the wing of a B-52 bomber at a height of 50,000 feet and proceeded to fly at Mach 5 for more than three-and-a-half minutes, blowing away the previous record of just twelve seconds. If you can believe it, however, the aircraft actually fell somewhat short of its goal -- Boeing and the Air Force were hoping the WaveRider would be able to fly for 300 seconds and hit Mach 6, but something apparently caused it to lose acceleration towards the end. Head on past the break for the video, we assure you it's still pretty impressive.
