The Mach 3 rivalry between the YF-12 and the XB-70
The XB-70 Valkyrie had an extremely large airframe; the YF-12 was not small, being 107 feet long. But if you compared the two, the Blackbird looked small The Mach 3…
The XB-70 Valkyrie had an extremely large airframe; the YF-12 was not small, being 107 feet long. But if you compared the two, the Blackbird looked small The Mach 3…