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The pitches of the several blades in a helicopter rotor assembly are controlled by individual blade control subsystems. Those blade control subsystems respond to the output signals from accelerometers mounted on the blades. The signals from the accelerometers are used to control the pitch of the bla

The pitches of the several blades in a helicopter rotor assembly are controlled by individual blade control subsystems. Those blade control subsystems respond to the output signals from accelerometers mounted on the blades. The signals from the accelerometers are used to control the pitch of the blades on which the accelerometers are mounted as well as the pitch of other blades. By appropriate orientation of any accelerometer and filtering within a particular feedback subsystem, each subsystem is designed to correct particular modes of blade motion to the exclusion of other modes of motion by varying lift.

대표청구항 ▼

An aircraft rotor assembly including lift control means for control of lift of aircraft blades, movement sensor means associated with each aircraft blade, and electrical feedback circuitry for controlling the lift control means in response to signals generated by the movement sensor means, that roto

An aircraft rotor assembly including lift control means for control of lift of aircraft blades, movement sensor means associated with each aircraft blade, and electrical feedback circuitry for controlling the lift control means in response to signals generated by the movement sensor means, that rotor assembly characterized by: the sensor means associated with each rotor blade comprising at least one accelerometer oriented relative to a direction of blade movement, caused by characteristic disturbances of blade motion, to sense that blade movement.