在喷管前有一组涡轮，涡轮与风扇连接在一根轴上。涡轮带动风扇又吸入了更多的空气，这样就产生了连续的循环。
On the way out, these gases drive a turbine which is connected to the fan via a shaft, thus drawing in more air and keeping the process going.
喷管中的气流由主流燃气和次流空气组成，用以模拟涡扇发动机的喷管。
The nozzle flow is composed of the main gas stream and the secondary air stream in order to simulate the nozzle of turbofan engine.
喷气发动机运转时，前端的风扇吸入空气； 空气经过压缩后与燃油一道被点燃； 高温的燃气迅速膨胀，咆哮着冲出尾喷管。
When a jet engine is running, a fan at the front draws in air, which is then compressed and burned with fuel to produce hot, rapidly expanding gases which roar out of the back.
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