U.S. Air Force tests hypersonic cruise missile
from Defense News
The U.S. Air Force on test launched a hypersonic cruise missile, with the vehicle accelerating to Mach 6, before splashing down in the Pacific Ocean, officials said. The Air Force said the test flight of the X-15A Waverider lasted more than 200 seconds, the longest ever hypersonic flight powered by scramjet propulsion. The previous record was 12 seconds in a NASA X-43 vehicle.
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