1-涡轮喷气发动机德国人汉斯·冯·欧海因(H·von·Ohain)首先研制成功涡轮喷气式发动机。1937年世界第一台单级离心式发动机HeS.1开始运转,推力250千克。1939年8月27日,安装HeS.3B发动机的亨克尔He178飞机首飞成功,发动机推力4.9千牛,飞机速度640千米/小时。但由于德国对这项研究成果认识不足,战争又迫切需要生产大量活塞式作战飞机,因此没有继续加强研究。英国弗朗克·惠特尔(F·Whittle) 1- Turbojet German H. von Ohain first developed a successful turbojet. In 1937 the world’s first single-stage centrifugal HeS.1 engine started operation, thrust 250 kg. On August 27, 1939, the Heinz He178 with the HeS.3B engine made its first flight with an engine thrust of 4.9 kN and an aircraft speed of 640 km / h. However, Germany did not continue to intensify its research because of lack of understanding of the research results and the urgent need to produce a large number of piston-type combat aircraft in the war. British Wh · Whittle