一、亚轨道飞机是“太空青蛙”亚轨道飞机的飞行过程是这样的:先用火箭将飞机发射到大气层外,让飞机具有相当快的初速度。到达太空后,火箭和飞机脱离,飞机不再具有继续向太空飞行的动力,然后向大气层下降,下降时以音速20倍的速度向前滑行。当飞机接近高密度大气层时,飞机自带的发动机启动,重新把飞机推向太空。飞机再次升入太空后,发动机关闭,飞机再向前滑行。这个过程周而复始,飞机 First, the suborbital aircraft is a “space frog” suborbital aircraft flight process is this: first use the rocket to launch the aircraft out of the atmosphere, so that the aircraft has a very fast initial speed. When it arrived in space, the rocket and the aircraft were disengaged and the aircraft no longer had the power to continue flying into space. Then it descended into the atmosphere and when it fell, it swam forward at a speed of 20 times the speed of sound. When the aircraft approached the high-density atmosphere, the aircraft’s own engine was started and the aircraft was pushed back into space. After the aircraft once again rose into space, the engine was shut down and the aircraft taxied forward. This process is repeated