For the second time in a row, the Falcon HTV-2, the unmanned hypersonic glider developed by the Defense Advanced Research Projects Agency (DARPA) for the U.S. defense failed its test flight and got ...

Falcon HTV-2, the unmanned hypersonic glider developed for U.S. defense, was lost over the Pacific Ocean yet again, after it was launched atop a rocket on Thursday. The experimental aircraft took off ...

WASHINGTON — For the second straight time, controllers lost contact with an experimental U.S. military hypersonic vehicle before it could complete its planned flight profile. The second Hypersonic ...

DARPA has launched an unmanned hypersonic gliding vehicle that can reach speeds up to Mach 20 (13,000mph). The Falcon program aims to develop and demonstrate hypersonic technologies for prompt use in ...

This story was updated at 5:43 p.m. EDT. Editor's note: DARPA released an update late today confirming that the Falcon HTV-2 aircraft impacted the Pacific Ocean along its planned flight path. Read the ...

Aerodynamic design validated and new understanding of thermal material properties gained Following an extensive seven-month analysis of data collected from the Aug. 11, 2011, second flight of DARPA’s ...

At 7:45 a.m. PDT, an unmanned glider was launched from Vandenberg Air Force Base in California aboard a Minotaur 4 rocket. Overseen by DARPA, the Defense Advanced Research Projects Agency, the glider, ...