On 3 October 1967, William J. 'Pete' Knight flew the X-15A-2 to Mach 6.7, 4,520 mph (7,274 km/h), at 102,100 feet (31,120 m). Fifty-nine years later, it remains the official world speed record for a crewed, powered aircraft.

#Spaceflightpedia #X15 #AviationHistory

I know the focus is on the "missing" SR-71...

But if you want to do high-speed flight testing....

Someone did go check to see if these are still where they were left.... right ?!
👀

#X15