FLIGHT CONTROL LAWS FOR AUTOMATIC HOVER HOLD

摘要

The disclosure relates to a flight control system for a rotary aircraft, the rotary aircraft having a longitudinal controller, a lateral controller, a directional controller, and a vertical controller, the control system comprising a longitudinal loop design, a lateral loop design, a directional loop design and a vertical control loop design, a forward speed hold loop and a lateral speed hold loop automatically engaging when the longitudinal controller is returned to a detent position and the aircraft groundspeed is outside a first groundspeed threshold, longitudinal and lateral maneuverability being controlled by either a pitch attitude and lateral speed loop or a pitch rate and roll rate loop when the longitudinal controller is out of the detent position.