Aeronautics and astronautics – Aircraft control – Automatic
Patent
1993-03-08
1995-04-18
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft control
Automatic
446175, 73147, B64C 1302
Patent
active
054071518
ABSTRACT:
A device for flight control of a model plane has a plurality of photo cell sensors, preferably, located on the wing tips, nose and tail and connected to a logic circuit inside the body of the plane. The logic circuit, computes the location of the model plane based on the sum and differential output of the sensors, and outputs electronic signals that drive the servo motors controlling the plane. The logic circuit can be calibrated to individually calibrate the rudder, elevator and the throttle electronic signal output, based on the light received by the photo cell sensors. Inside an enclosed space, a focussed beam of light is directed at the model plane. The logic circuit, receives the sensors' output, and using them computes the location of the model plane within the beam of light. The focused beam of light is swivel attached to a motorized control for swiveling the reflector housing in a predetermined pattern of a closed path racetrack holding pattern and a closed path figure eight holding pattern. Preferably, used in conjunction with radio control having a radio transmitter, a radio receiver, whose output drives the servo motors controlling the plane when the electronic signals at the antenna wire are such that they can be overridden by signals from radio control transmitter, when the radio transmitter is actively broadcasting. When used in conjunction, the plane can be handed over and then retrieved from the beam of light.
REFERENCES:
patent: 3621356 (1971-11-01), Kwan
patent: 3818700 (1974-06-01), Kantrowitz et al.
patent: 3849931 (1974-11-01), Gulley, Jr.
patent: 4828525 (1989-05-01), Okano
patent: 4865575 (1989-09-01), Rosenthal
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