EC68-2131 In this photo the #1 XB-70A 62-0001 is viewed from above in cruise configuration with the wing tips drooped for improved controllability.The XB-70A, capable of flying three times the speed of sound, was the world's largest experimental aircraft in the 1960s. Two XB-70A aircraft were built. Ship #1 was flown by the NASA Flight Research Centernow NASA Dryden, Edwards, California, in a high speed flight research program.1968 NASA Photo
