Всем спасибо.Однако..
Ещё усилий господа.И мы увидим истину.
Ваши варианты.Текста чуть больше.Учитывайте Крутящий момент.

You will recall from the engine discussion that these engines are geared to the engine core and this presents some very unique operating characteristics. One of these unique characteristics is that when you pull the engines to idle power, you are still producing about 20-22% Torque, which means you are still producing forward thrust! Why would you want this?

Well, the worst thing you can do to a geared engine is to slow the engine down so much that the force of air moving through the propeller causes the propeller to exert rotational force on the engine.