Unlike the blades on old-fashioned propeller engines, these blades spin around at the back of the engine.

与老式螺旋桨发动机的叶片不同，这些叶片在发动机的后部旋转。

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The propeller is usually mounted on a mast behind the pilot and raised for take-off (or to gain more height or distance once airborne) and then lowered back inside the fuselage.

这种螺旋桨通常装在飞行员后面的一个桅杆上，起飞的时候升起（或在帮飞机实现更高的高度或航程的时候），随后收入机身。

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The spanner for dismantling the propeller is in the steering room. Please tie it back in place after use.

拆卸推进器的扳手在舵机房里，有后请归放原处。

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After cutting his clothing free from the propeller, he pulled Charlie back into the boat and performed mouth-to-mouth resuscitation.

BBC: Charlie Hutton's propeller death accidental

Unlike the blades on old-fashioned propeller engines, these blades spin around at the back of the engine.

ECONOMIST: Monitor

But the Rolls-Royce Azipull has the propeller at the front of the pod rather than the back.

ECONOMIST: Marine technology: A voyage of discovery | The