19FortyFive on MSN
The US Air Force’s Mach 3.08 XB-70 Valkyrie cost $2,000,000,000 to build just 2 bombers to replace the B-52 but were obsolete before they flew
The US Air Force XB-70 bomber cost up to $2 billion, reached Mach 3.08 and was built for a 50,000-pound payload before ...
The only remaining XB-70 Valkyrie superbomber is on display at the National Museum of the U.S. Air Force in Dayton, Ohio. The Cold War-era prototype variant of the planned B-70 nuclear-armed strategic ...
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