rotor hub

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• rotor head — i. That part of the rotor hub to which the rotor blades are attached. Sometimes called a spider. The same as a rotor hub. ii. When used as slang, it means a helicopter pilot …   Aviation dictionary

• rotor — ► NOUN 1) the rotating part of a turbine, electric motor, or other device. 2) a hub with a number of radiating blades that is rotated to provide the lift for a helicopter …   English terms dictionary

• rotor — [rōt′ər] n. [contr. of ROTATOR] 1. any of various rotating mechanical parts; specif., a) the rotating part of a motor, dynamo, etc.: cf. STATOR b) in the distributor of a gasoline engine, the part that momentarily connects each spark plug wire to …   English World dictionary

• rotor system types — There are three types of rotors: rigid, semirigid, and fully articulated. In a rigid rotor, the blades are free to change pitch but otherwise are made as rigid as possible. The blades of rigid rotor have no hinges that allow them to flap or drag …   Aviation dictionary

• Hub Height —   The height above the ground that a horizontal axis wind turbine s hub is located.   ***   In a horizontal axis wind turbine, the distance from the turbine platform to the rotor shaft.   U.S. Dept. of Energy, Energy Information Administration s… …   Energy terms

• rotor — noun 1》 the rotating part of a turbine, electric motor, or other device. 2》 a hub with a number of radiating blades that is rotated to provide the lift for a helicopter. 3》 Meteorology a large eddy in which the air circulates about a horizontal… …   English new terms dictionary

• rotor — n. 1 a rotary part of a machine, esp. in the distributor of an internal combustion engine. 2 a set of radiating aerofoils round a hub on a helicopter, providing lift when rotated. Etymology: irreg. for ROTATOR …   Useful english dictionary

• Helicopter rotor — This article is about helicopter main rotor systems. For antitorque control, see tail rotor. Helicopter rotor The rotor head of a Sikorsky S 92 A helicopter main rotor or rotor system is a type of fan that is used to generate both the aerodynamic …   Wikipedia

• tail rotor roll — The rolling moment produced by the tail rotor drift correction force when the tail rotor is mounted on the fuselage below the horizontal level of the main rotor hub. This tendency can be overcome by the reduced couple lever arm. This can be… …   Aviation dictionary

• seesaw rotor — A rotor system in which the blades are fixed to the hub, generally by a teetering or seesaw hinge, allowing the blades to flap and feather but not lead lag or drag. The rotor pivots on the mast in much the same way a seesaw pivots on its fulcrum …   Aviation dictionary

• semirigid rotor — A rotor system in which the blades are fixed to the hub, generally by a teetering or seesaw hinge, allowing the blades to flap and feather but not lead lag or drag. See also rotor system tubes. Two views of semi rigid rotor …   Aviation dictionary