The big advance for turbofans is that the propeller is traded for a fan inside the nacelle (housing), and much of the incoming air bypasses the guts of the engine, providing thrust simply by being compressed by the fan's shape [see illustration on opposit
The big advance for turbofans is that the propeller is traded for a fan inside the nacelle (housing), and much of the incoming air bypasses the guts of the engine, providing thrust simply by being compressed by the fan's shape [see illustration on opposit
涡轮扇引擎最大的特点在于，它以置放在短舱（即外罩）内的风扇来取代螺旋桨，并让流入的大部份空气避开引擎中央的通道，再利用风扇的外形来压缩空气、提供推力（参见右页图解）。