Blade-pitch control system with feedback swashplate

摘要

A blade-pitch control system for controlling a pitch angle of blades on a rotor has an input swashplate assembly having non-rotating and rotating portions, the rotating portion being operably connected to blade grips. A feedback swashplate assembly has non-rotating and rotating portions, the rotating portion being connected to the yoke for movement with the yoke during flapping of the yoke. Linear actuators connect the non-rotating portion of the input swashplate assembly to the non-rotating portion of the feedback swashplate assembly. Motion of the yoke during flapping causes a corresponding motion of the feedback swashplate assembly and input swashplate assembly for providing selected pitch-flap coupling between flapping motion of the yoke and pitch motion of the grips.

主权项

1. A blade-pitch control system for controlling a pitch angle of each of a plurality of blades on a rotor, the blades being rotatably connected with blade grips to a yoke, the control system comprising:
an input swashplate assembly having a non-rotating portion and a rotating portion, the rotating portion of the input swashplate assembly being operably connected to the blade grips; a feedback swashplate assembly having a non-rotating portion and a rotating portion, the rotating portion of the feedback swashplate assembly being coupled to the yoke and rotatably coupled to a mast, the feedback swashplate being configured to move in connection with the yoke during flapping of the yoke; and linear actuators connecting the non-rotating portion of the input swashplate assembly to the non-rotating portion of the feedback swashplate assembly, so as to transfer movement between the input swashplate and the feedback swashplate; wherein the pitch angle of the plurality of blades on the rotor are adjusted in relation to movement of the input swashplate.