MOTION CONTROLLED HELICOPTER AND ROTATION RATE SWITCHED FLUID LEAD LAG DAMPER

摘要

A method and centrifugal force switching dampers are disclosed for controlling helicopter ground resonance motions and air resonance motions. The helicopter lead-lag damper has a first ground resonance motion damping rate stage and a second air resonance motion damping rate stage. The damper includes a centrifugal force switch. The damper is oriented relative to the rotary wing rotation axis and helicopter blade. An in-flight rotation rate of the centrifugal force switching damper actuates the centrifugal force switch with the damper switching from the ground resonance motion damping rate stage to the second air resonance motion damping rate stage.