National Security Journal on MSN

Sorry, B-21 Raider: Mach 3.08 XB-70 Valkyrie bomber has a message for the US Air Force

Mach 3.08 At 74,000 Feet: The XB-70’s Peak Moment Summary and Key Points: The lone surviving XB-70 Valkyrie—North American’s Mach 3 strategic bomber prototype—sits at the National Museum of the Air ...
Aviation Republic on MSN

11,000 gallons of JP-7 and 650°F skin heat: Fueling Mach 3

Sustained Mach 3 flight forced the Blackbird program to rethink fuel entirely. At cruise, skin temperatures could exceed ...