Lockheed Martin’s Hypersonic Aircraft Plans Are Taking Shape
2016-03-28Reading Time: < 1 minute For years, Lockheed Martin has been working on hypersonic (Mach 5 and above) aircraft like the SR-72, which could reach virtually any part of the world within a couple of hours. These vehicles have long been seen as distant prospects (the SR-72 might not reach service until 2030 at the earliest), but they now appear […]