A recent test flight of the Lockheed Martin HAWC air-breathing hypersonic missile set a record for scramjet propulsion at hypersonic speeds, achieving about 327 seconds of combustion, versus 200 seconds in a 2010 test of the Boeing X-51 Waverider.
The Biden administration is reportedly tapping Stefanie Tompkins to run the Defense Advanced Research Projects Agency, spurring the third leadership change at the secretive Pentagon organization since January 2020. Defense One first reported Tompkins’s “pre-decisional” appointment to the post on Jan. 19. The White House ...