Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Reexamination Certificate
2008-07-29
2008-07-29
Jeanglaude, Gertrude A. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
C701S015000, C701S016000, C244S181000, C073S17800T
Reexamination Certificate
active
07406369
ABSTRACT:
A take off ground effects compensated angle of attack system includes a radio altimeter and/or timer, a pitch angle system and a flight control computer. The radio altimeter generates a signal which is indicative of the aircraft's altitude from 0 i.e., weight off wheels to an altitude of ½ the wing span of the aircraft. The angle of attack system simultaneously generates a signal which is indicative of the aircraft's angle of attack without compensation for ground effects. Therefore, a ground effects signal of from 1½° to 0° is generated and added to the angle of attack signal as the aircraft climbs from 0 ft. to an altitude which is equal to ½ the wing span of the aircraft. The ground effects signal is added to the angle of attack signal to provide a ground effects compensated angle of attacks signal which is then fed to the flight control computer or display.
REFERENCES:
patent: 3691356 (1972-09-01), Miller
patent: 5089968 (1992-02-01), Orgun et al.
patent: 5136518 (1992-08-01), Glover
Jeanglaude Gertrude A.
Lowe Hauptman & Ham & Berner, LLP
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