来自MSN1 个月
XB-70 Bomber Can Be Explained in 3 Words
A fatal crash in 1966 involving the second prototype ... at the National Museum of the U.S. Air Force in Dayton, Ohio. XB-70 Valkyrie: The Mach 3 Bomber That Pushed Aviation Boundaries It was ...
Business Insider India6 年
Jump inside the XB-70 Valkyrie, the largest and fastest bomber that the US ever built
The XB-70 Valkyrie could cruise at Mach 3, riding its own shock wave to do so, and could hit altitudes of 70,000 feet. But the XB-70 Valkyrie never went into full-scale production ...