Lockheed confident of being able to build a 4600 mph spyplane drone in 2018
Lockheed Martin says hypersonic technologies are now sufficiently mature to enable progress towards a flight demonstrator. In March 2016, Lockheed CEO Hewson stated that the company was on the verge of a technological breakthrough that would allow its conceptual SR-72 hypersonic plane to reach Mach 6. A hypersonic demonstrator aircraft the size of an F-22 …