Method and apparatus for effecting fine control of aircraft velo

Details Method and apparatus for effecting fine control of aircraft velo Method and apparatus for effecting fine control of aircraft velo

1984-09-17

1987-03-24

Blix, Trygve M.

Aeronautics and astronautics

Aircraft control

Automatic

244 76R, 244 76C, 244113, 244 1TD, B64C 932

Patent

active

046519580

ABSTRACT:
In order to achieve fine control of the velocity of an aircraft flying a predetermined flight path at a predetermined nominal speed in the presence of such perturbations as wind gusts, a low inertia, fast acting device is extended or deployed into the aircraft dragstream and is rapidly position-modulated in response to sensed acceleration/deceleration to instantaneously slightly alter the total system drag to an amount which causes the aircraft to maintain the predetermined velocity. Among the exemplary alternative low inertia devices disclosed are: fuselage and wing mounted flaps which are rapidly more or less extended, a trailing cable which is rapidly reeled in or out, and a trailing inflatable member whose degree of inflation is rapidly changed, all in response to sensed acceleration/deceleration from an on-board system.

REFERENCES:
patent: 2761636 (1956-09-01), Finlay
patent: 2948496 (1960-08-01), Joline
patent: 3160366 (1964-12-01), Graffenreid
patent: 3448948 (1969-06-01), Reerink

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