Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1989-07-14
1990-03-20
Woodiel, Donald O.
Measuring and testing
Navigation
Leeway incidence or side-slip
244181, G01C 2100
Patent
active
049090771
ABSTRACT:
An indicator meter which may comprise a galvonometer is mounted in a casing having an indexing pointer or "bug" mounted for movement thereon relative to the pointer of an aircraft angle of attack indicator. The settable indexing pointer and the bezel of the casing are integrated with a variable resistor. A reference voltage is fed to the variable resistor such that a voltage is generated which is in accordance with the positioning of the indexing pointer. Thus, a voltage is generated in accordance with the pointer setting which represents the value of a desired angle of attack. The pointer can be set to represent a desired angle of attack with the meter indicating the measured angle of attack. Voltages representing the measured and desired value of angle of attack are compared with a difference or "error" signal is generated. This error signal is used to control the flight of an aircraft either automatically or by operator action to eliminate the error signal and bring the meter reading and the settable indexing pointer to coincidence.
REFERENCES:
patent: 2193077 (1940-03-01), Saxman, Jr.
patent: 3100612 (1963-08-01), Owen
patent: 3112905 (1963-12-01), Greene
patent: 3262311 (1966-07-01), Gwathmey
Safe Flight Instrument Company
Sokolski Edward A.
Woodiel Donald O.
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