Aeronautics and astronautics – Aircraft control – Automatic
Patent
1978-07-17
1989-10-24
Bentley, Stephen C.
Aeronautics and astronautics
Aircraft control
Automatic
244 31, 244 315, 324423, 324442, 324458, B64C 1320
Patent
active
048756466
ABSTRACT:
A navigation system for an aircraft fitted with an autopilot, the system comprising at least one ground-based transmitter (2), receiver means (7,8) mounted in the aircraft and including two antenna (5,6) oriented such that their polar diagrams overlap and are inclined with respect to the fore-and-aft axis of the aircraft. The system also comprises means (7,8) for deriving from the signals received by the antenna (5,6) from the, or a selected, transmitter (2) an error signal indicative of the angular difference between the heading of the aircraft and the heading of the, or a selected, transmitter (2) relative to the aircraft and applicable to the autopilot (12) to align the heading of the aircraft with the heading of the, or a selected, transmitter (2), and for deriving a signal representative of the distance of the aircraft from the, or a selected, transmitter (2), and means (9) responsive to the distance signal and operable to initiate a turn maneuver of the aircraft such that the latter will continually fly back and forth over the, or a selected, transmitter (2).
REFERENCES:
patent: 2253508 (1941-08-01), Crane et al.
patent: 3005605 (1961-10-01), MacCready
patent: 3344428 (1967-09-01), Dewey et al.
patent: 3474405 (1969-10-01), Padberg
patent: 3569923 (1971-03-01), Naubereit et al.
patent: 3859598 (1975-01-01), McElwain et al.
patent: 4190000 (1980-02-01), Shaull et al.
The A.R.R.L. Antenna Book, American Radio Relay League, 1960, pp. 238-239.
Browning Nigel
Fry Arthur C.
Malpass Robert L. H.
Matthews Brian
Peters Michaels S.
Bentley Stephen C.
British Aerospace Public Limited Company
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