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 ...
Aviation Week Network

NASA’s X-59 Quiet Supersonic Research Aircraft Makes First Flight

Flown by NASA X-59 lead pilot Nils Larson, the much-anticipated first flight of the Lockheed Martin-built aircraft began at 8 ...