Hypersonic SR72 and the Trijet engine
There are some more details about the Lockheed Mach 6 hypersonic plane. Lockheed as been working with rocket propulsion specialists Aerojet for several years on the project, using company funds. Although the design could lead to a Mach 6 unmanned strike aircraft, Lockheed Martin has dubbed it the SR-72, after the company’s SR-71 Blackbird manned …