Lockheed Martin CEO Marillyn Hewson announced on Tuesday that the aerospace company has made "several breakthroughs" on a hypersonic warplane that could reach Mach 6, known as the Hypersonic Test ...

An unmanned aircraft that can travel at a breakneck pace 20 times the speed of sound will take off Wednesday from an Air Force base in California for a test flight. The second flight of the Hypersonic ...

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 ...