Leaving the airspace above New York City at 2,455 miles per hour, SR-71 tail number 64-17972 would set a transatlantic speed record on Sept. 1, 1974.

Such "countdown demonstration tests" have traditionally taken place shortly before launch with the rocket and crew ship ...

Abstract: The design of this paper is to solve the problems of poor stability and low control accuracy of traditional temperature control system in industry, agriculture and even daily life. This ...