ducted-fan

基本解释

A jet engine that provides extra thrust by means of a ducted fan in its forward end that draws in extra air.
涡轮风扇发动机一种喷气发动机，前有一管道风扇吸入额外量的空气，这部分空气经压缩后提供额外推力
Applications:Good for 1:18 on road car,ducted fan power and with gearbox for high efficiency power system.
应用：合适1：18房车动力。函道风扇以及带减速齿轮的高效率动力系统。
The train is propelled by ducted fans.
这种火车用涡扇推进器。
Compared with the propeller or the rotor, the ducted fan provides a larger aerodynamic thrust (lift) and the low noise due to the shrouding duct.
摘要涵道风扇较同样直径的孤立风扇能产生更大的升力，且风扇环括在涵道内，既可阻挡风扇气动声向外传播，又结构紧凑、安全性高。
Compared with the propeller or the rotor,the ducted fan provides a larger aerodynamic thrust(lift) and the low noise due to the shrouding duct.
涵道风扇较同样直径的孤立风扇能产生更大的升力,且风扇环括在涵道内,既可阻挡风扇气动声向外传播,又结构紧凑、安全性高。