SR-72 Mach 6 prototype

Lockheed finally will build and fly SR-72 Mach 6 prototype, the successor of legendary SR-71 Blackbird.

Lockheed Martin says hypersonic technologies are now sufficiently mature to develop the Mach 6 strike and reconnaissance SR-72 aircraft.

Above, the SR-72. Image credit Lockheed

The SR-72 will be a strike and reconnaissance aircraft.

First flight of the prototype is set by 2020.

According to Lockheed Martin’s Advanced Development Programs (ADP), also known as Skunk Works, “hypersonic technologies, including a combined cycle propulsion system that blends a rocket engine and a supersonic jet engine, are now available.”


SR-71 Blackbird. Image credit Lockheed

via Popular Mechanics