Designed and built in the 1960s, the SR-71 Blackbird still holds the official Air Speed Record for a manned airbreathing jet aircraft with a speed of 3,530 km/h (2,193 mph).
Cutaway illustrations of the twin cockpit variant of the SR-71. Notice the inlet funnels thatincreased the air speed in front of the J58 engines.
These once classified photos reveal how Lockheed built the SR-71 Blackbird in secret, in California.
