Propeller (aeronautics)

The feathered propellers of an RAF Hercules C.4

A Sailor checks the propeller of a Landing Craft Air Cushion (LCAC) Hovercraft

A decorated Japanese taketombo bamboo-copter

An aircraft propeller (noun /prəˈpel·ər/) or airscrew converts rotary motion from an engine or other mechanical power source, to provide propulsive force. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically-variable "constant-speed" type.

单词	Air screw
释义	Air screw 原声例句美丽新世界 The roar of the air screws momentarily drowned the shouting; then, as the machine touched the ground and the engines were turned off: " We–want–the whip; we–want–the whip, " 螺旋桨的轰鸣暂时压倒了叫喊。在飞机着陆、引擎关闭之后，“我们——要——看——鞭子——功。”“我们——要——看——鞭子——功。” 英语百科 Propeller (aeronautics) An aircraft propeller (noun /prəˈpel·ər/) or airscrew converts rotary motion from an engine or other mechanical power source, to provide propulsive force. It comprises a rotating power-driven hub, to which are attached several radial airfoil-section blades such that the whole assembly rotates about a longitudinal axis. The blade pitch may be fixed, manually variable to a few set positions, or of the automatically-variable "constant-speed" type.
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Air screw

Propeller (aeronautics)