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Hunter Industries is a manufacturer of irrigation and outdoor lighting equipment for the landscaping, residential, commercial, agricultural, and golf course industries, [3] based in San Marcos, California. [4] Hunter Industries also offers sanitary dispensing products such as automatic paper towel and soap dispensers.
If a helicopter suffers a power failure a pilot can adjust the collective pitch to keep the rotor spinning, generating enough lift to touch down and skid in a relatively soft landing. [ 3 ] The collective pitch control in a Boeing CH-47 Chinook is called a thrust control , but serves the same purpose, except that it controls two rotor systems ...
Autorotation is a state of flight in which the main rotor system of a helicopter or other rotary-wing aircraft turns by the action of air moving up through the rotor, as with an autogyro, rather than engine power driving the rotor. [1] [2] [3] The term autorotation dates to a period of early helicopter development between 1915 and 1920, and ...
Tail rotor vortex ring state - Wind moving in the same direction as the tail rotor moves air. With pusher tail-rotors, that is wind from the opposite side of the tail-rotor. With puller tail-rotors, that is wind from the same side as the tail rotor. For main rotors with clockwise rotation (European), that is wind from 3 o'clock.
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An absolute encoder maintains position information when power is removed from the encoder. [5] The position of the encoder is available immediately on applying power. The relationship between the encoder value and the physical position of the controlled machinery is set at assembly; the system does not need to return to a calibration point to maintain position accuracy.
An intermeshing-rotor helicopter (or synchropter) is a helicopter with a set of two main rotors turning in opposite directions, with each rotor mast mounted with a slight angle to the other, in a transversely symmetrical manner, so that the blades intermesh without colliding.
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