大气层外,九天云里,是谁在茫茫宇宙建立功勋?是火箭。航空是在大气层中进行,飞机不用带氧化剂,只带燃烧剂即汽油。而航天要在大气层外飞行,那里没有氧气等气体,所以航天飞行器——火箭必须携带两种推进剂即氧化剂和燃烧剂。飞机与火箭的根本区别就是携带两种推进剂还是一种推进剂。 Outside the atmosphere, nine days in the cloud, who founded the feast in the vast universe? Is the rocket. Aviation is carried out in the atmosphere, the aircraft does not take oxidants, only with the fuel that gasoline. Aerospace, however, is to fly outside the atmosphere, where there is no oxygen and other gases, so the spacecraft - the rocket must carry two propellants, oxidants and combustion agents. The fundamental difference between an aircraft and a rocket is carrying two propellants or one propellant.