National Security Journal on MSN

The Mach 6 SR-72 Darkstar ‘Scramjet’ Has a Message for the U.S. Air Force

The secretive SR-72 “Darkstar” is Lockheed Martin’s ambitious project to build a Mach 6+ hypersonic ISR and strike aircraft. ...
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SCRAMJET: The Future of Hypersonic Propulsion

Discover the power of the scramjet – the cutting-edge hypersonic propulsion system pushing aircraft and missiles beyond Mach 5. Learn how it works, why it’s revolutionary, and what it means for the ...