Aeronautics and astronautics – Aircraft control – Automatic
Patent
1995-06-06
1998-06-23
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft control
Automatic
244 48, 244 7B, 244 81, 244120, B64C 1316
Patent
active
057693595
ABSTRACT:
An aircraft control system for controlling an aircraft, particularly a free wing aircraft in low speed or hover regimes. An air speed sensor measures air speed of the aircraft and outputs an air speed signal to a control processor which processes the air speed signal with a speed control input signal. A control actuator actuates an aircraft control surface in response to the control surface control signal. The air speed sensor may include a shaft mounted impeller located in an airstream of the aircraft. A rotational speed sensor, coupled to the impeller, measures a rotational speed of the impeller and outputs a rotational speed signal as the air speed signal. In an alternative embodiment, the air speed sensor may include a vane located in an airstream of the aircraft and deflected in response to air flow in the airstream. In another embodiment, the speed sensor may include an angular position sensor which measures an angle between a free wing and the aircraft fuselage and outputs an angle measurement signal as the air speed signal. The aircraft control surface may comprises a control boom pivotally attached to a fuselage of the aircraft of a trim tab pivotally attached to a fuselage of the aircraft.
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Chevallier Christophe
Rutan Elbert L.
Barefoot Galen L.
Freewing Aerial Robotics Corporation
Hauptman Lowe
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