YF-12A and YF-12C in flight formation at dawn – credits: NASA The Lockheed A-12 family, known as the Blackbirds, were designed by Clarence “Kelly” Johnson. They were constructed mostly of titanium to withstand aerodynamic heating. Fueled by JP-7, the Blackbirds were capable of cruising at Mach 3.2 and attaining altitudes …
Read More »F-12 Fighter-Interceptor: What Could Have Been the World’s Fastest Ever Combat Aircraft
