Ground state-fly state transition control for unique-trim aircra

Details Ground state-fly state transition control for unique-trim aircra Ground state-fly state transition control for unique-trim aircra

1994-05-17

1995-08-29

Teska, Kevin J.

Boots, shoes, and leggings

36442406, 364427, 364428, 244178, 244100R, B64C 900, B60V 308

Patent

active

054466660

ABSTRACT:
An aircraft control system for an unique-trim, model-following system includes a feedforward shaping function that provides quickening of pilot input, and an automatic trim function that accommodates return of the cockpit controller to an unique, centered position during trimmed flight. The basic control law is reconfigured in response to the changing state of landing gear contact to support transitions between ground state and fly state conditions. The state of the landing gear is monitored continually to recognize the occurrence of initial ground contact and whether the aircraft is constrained about a rotational axis due to ground contact. The control is altered progressively as the transition proceeds so that command of the control surface is consistent with the degree of constraint imposed by ground contact.

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