National Security Journal on MSN

Mach 9.6 X-43A ‘Hypersonic Scramjet’ Has a Message for Any Military on Earth

A, an unmanned scramjet testbed, set the world record for an air-breathing aircraft by hitting Mach 9.6 in 2004. -Launched ...

Watch: Nasa’s supersonic passenger plane makes first flight

Passengers are one step closer to flying supersonic for the first time since Concorde’s retirement after Nasa took its “sonic ...