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 ...

Key Points and Summary - The XB-70 Valkyrie was the U.S. Air Force’s bid to outrun Soviet defenses: a six-engine, compression-lift bomber built for sustained Mach 3 at extreme altitude. -National ...

With two GE [F110-GE-]229 engines putting out 29,500 pounds of thrust each, a clean F-15EX can reach Mach 2.9. Boeing’s BA latest version of the storied F-15 Eagle, the F-15EX Eagle II, can reach ...