Method and apparatus for trimming and stabilizing an aircraft

Details Method and apparatus for trimming and stabilizing an aircraft Method and apparatus for trimming and stabilizing an aircraft

1986-02-20

1988-07-19

Lall, Parshotam S.

Boots, shoes, and leggings

244 1713, 244178, B64C 1318

Patent

active

047589582

ABSTRACT:
An aircraft, such as a helicopter, is trimmed into a desired position by ducing a trimming control signal during the maneuver for the desired positive and adjusting control forces in response to the trimming control signal. The trimming control signal (.delta..sub.T) is produced by comparing a rated or reference signal (R) representing the desired displacement from the force free position of the stick, with a measured signal (.theta.) representing the rotational speed of an aircraft about a given axis. In addition to the trimming operation a stabilization of the position of the aircraft is performed at the moment when the pilot does not touch the control stick. The measured signals thus include information regarding the deviation of the aircraft from the desired position. Thus, a trimming motor automatically maintains the aircraft into the desired attitude.

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patent: 4500967 (1985-02-01), Murphy et al.
patent: 4607201 (1986-08-01), Koenig
patent: 4642774 (1987-02-01), Centala et al.

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