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 ...

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 ...