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Questions tagged [xb-70-valkyrie]

An extremely-high-speed-and-altitude airplane from North American Aviation, capable of flight at over mach 3. It was originally designed in the 1950s to deliver nuclear weapons, but the surface-to-air missile made it obsolete in this role; only 3 were ever built, and only as high-speed research aircraft.

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How were the fuel tanks sealed on the XB-70 Valkyrie?

The Valkyrie flew at Mach 3.1, close to the SR-71's operating speed in cruise. For the SR-71: Fuselage panels were manufactured to fit only loosely with the aircraft on the ground. Proper alignment ...
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Why weren't the XB-70's wingtips fixed in the down position?

The XB-70's wing tips folded down in flight to: improve directional stability at supersonic speeds reduce shifting of aerodynamic center at supersonic speeds reduce drag at high supersonic speeds ...
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