Retaining airspeed hold engagement in low speed maneuver

Details Retaining airspeed hold engagement in low speed maneuver Retaining airspeed hold engagement in low speed maneuver

1981-03-30

1983-02-01

Smith, Jerry

Boots, shoes, and leggings

244 1713, G06F 1550, B64C 1100

Patent

active

043719376

ABSTRACT:
In an aircraft automatic flight control system (FIG. 1) having an airspeed controller (84), the engagement of the airspeed control function (244, FIG. 4 ) is initiated (123, FIG. 2 ) only in response to airspeed being greater than a 45 knot threshold (88). But once the speed threshold is attained, should the pilot override the airspeed control by applying force (35, 109) to the pitch attitude controller, airspeed engagement is retained (122) until a small airspeed error (126) indicates that the system has substantially regained the reference airspeed.

REFERENCES:
patent: 4004756 (1977-01-01), Gerstine et al.
patent: 4029271 (1977-06-01), Murphy et al.
patent: 4168045 (1979-09-01), Wright et al.
patent: 4304375 (1981-12-01), Builta et al.

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