As Lockheed test pilot Bill Weaver recounted to Roadrunners Internationale, regarding his tale of surviving the break-up of Test Article 61-7952 on January 25, 1966, the SR-71 “[...] had a turning radius of about 100 mi. at that speed and altitude.” That would be Mach 3.18 (2,439 mph, or roughly 35 miles per minute)…