Automatic approach to hover system

Details Automatic approach to hover system Automatic approach to hover system

1976-04-07

1977-06-14

Blix, Trygve M.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

73178H, 23515022, 244180, 244186, G05D 100

Patent

active

040292711

ABSTRACT:
In a helicopter having an automatic pilot system for controlling the main rotor collective pitch, main rotor longitudinal and lateral cyclic pitch, and tail rotor collective pitch, in response to inputs provided from normal sensors, navigational instruments and controls, (which include among others as is known, doppler radar, a pilot panel, an air speed indicator, a radar altimeter, a barometric altimeter and a longitudinal accelerometer), commands to control automatic approach to a desired hover position are provided to the autopilot system in response to signals normally supplied by a TACNAV unit as well as the sensors, navigational units and controls; controls are provided for altitude and rate of descent, so as to terminate in hover at a desired altitude, as well as for turns, courses, and speed so as to approach the desired point of hover upwind and to decelerate in a controlled fashion to hover.

REFERENCES:
patent: 2650046 (1953-08-01), Vanderlip
patent: 3649818 (1972-03-01), Sylvander
patent: 3711042 (1973-01-01), Rempfer
patent: 3816716 (1974-06-01), DeGarmo

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