초록 ▼

A flight control system increases the automatic control authority over, preferably, a helicopter yaw axis. A limited authority series servo is complemented with a full authority parallel servo. The parallel servo is driven by a combination of a trim command signal and a signal representing the exces

A flight control system increases the automatic control authority over, preferably, a helicopter yaw axis. A limited authority series servo is complemented with a full authority parallel servo. The parallel servo is driven by a combination of a trim command signal and a signal representing the excess of the yaw command signal over the amplitude limited drive signal to the series servo.

대표청구항 ▼

For use in an aircraft having (a) an autopilot for providing one or more flight control command signals and (b) a manually operable device mechanically coupled through appropriate linkages to a flight control surface so as to afford positioning of said surface, the apparatus comprising: (1) servomot

For use in an aircraft having (a) an autopilot for providing one or more flight control command signals and (b) a manually operable device mechanically coupled through appropriate linkages to a flight control surface so as to afford positioning of said surface, the apparatus comprising: (1) servomotor first means connected to said linkages so as to operate in series with said manually operable device; (2) second means connected to said first means output for providing a feedback first signal; (3) third means for receiving said feedback first signal and a control first signal and producing therefrom a corrective error first signal which causes the servomotor first means output position to change so as to maintain said corrective error first signal substantially at zero; (4) servomotor fourth means connected to said linkages so as to operate in parallel with said manually operable device; (5) fifth means connected to fourth means output for providing a feedback second signal; (6) sixth means for receiving said feedback second signal and a control second signal and producing therefrom a corrective error second signal which causes the servomotor fourth means output position to change so as to maintain said corrective error second signal substantially at zero; and (7) seventh means for (a) receiving a predetermined autopilot generated command signal and (b) providing as output said control first signal and said control second signal such that said control first signal comprises a signal indicative of output signal of an amplitude limiter whose input signal is said autopilot generated command signal, and such that said control second signal comprises a signal indicative of excess of said autopilot generated command signal over a predetermined reference.