Well, that was quick. The US military has lost all contact with a hypersonic aircraft that the Pentagon hoped would clock in as the fastest vehicle every created, officials said. The unmanned Falcon ...

An unmanned DARPA hypersonic glider — a prototype for a global strike weapons program — launched on its second test flight Thursday (Aug. 12) in a bid to fly at the mind-blowing speed of Mach 20. The ...

The first - and perhaps only - video footage of the ill-fated second test-flight of DARPA's Falcon Hypersonic Technology Vehicle 2 (HTV-2) has been released. Shot with a handheld camera by a ...

(Update: 1:06 p.m. EDT)The U.S. military lost contact with an unmanned hypersonic glider shortly after it launched on a test flight today (Aug. 12) as part of a global strike weapons program to ...

DARPA has released the findings from an independent engineering review board on what caused the Hypersonic Technology Vehicle (HTV-2) to fail nine minutes into its August 11, 2011 test flight. On that ...

If all goes well, the Pentagon this week will test an unmanned aircraft that, in theory, can travel at speeds upwards of 13,000 miles per hour and send a missile to strike an identified target within ...

DARPA has confirmed the splash down of its unmanned Falcon Hypersonic Technology Vehicle (HTV-2) following the hypersonic vehicle's second test flight on August 11. While a "controlled descent" ...

The US Defence Advanced Research Projects Agency may have lost contact with its Falcon Hypersonic Technology Vehicle 2 some 9min after launch, but the 23 April mission would appear to stand as a ...

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 ...