Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Patent
1998-04-29
2000-07-18
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
701210, 701224, 701302, 244 76R, 244158R, 244181, G05D 100
Patent
active
060920076
ABSTRACT:
An aircraft autopilot system provides a wind correction angle which is added to the desired course to provide commanded heading, the wind correction angle being generated as a proportional and integral function of ground track error. When the aircraft is off its desired course, it can be returned to the desired course by means of a course intercept angle, added to the desired course, to provide a corrected commanded course, the course intercept angle being a proportional function of the perpendicular error (the lateral distance of the aircraft from the original course) suitably limited to some angle within 90.degree. of the desired course. The course correction angle may be generated as a proportion of the perpendicular course error determined by the degree of importance of accuracy, and may be switched over to a course directly toward a waypoint in dependence upon the importance of efficiency. The course intercept angle may be a variable proportion of the perpendicular error as a function of the importance of accuracy, and the limits on the intercept angle determined by the relative importance of efficiency.
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Corning, III Sherman
Cotton Bryan S.
Thornberg Christopher A.
Walsh David M.
Arthur Gertrude
Cuchlinski Jr. William A.
Sikorsky Aircraft Corporation
Williams M. P.
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