416 / | HD | FLUID REACTION SURFACES (I.E., IMPELLERS) |
98 | DF | SUSTAINED ANCILLARY MOVEMENT OF ROTARY WORKING MEMBER (E.G., CYCLIC FEATHERING, ETC.) {9} |
103 | DF | .~ Lead-lag type rotor blade movement {3} |
106 | DF | .~.~ With movement restraining means (i.e., damping) {1} |
107 | .~.~.~ Resilient bias or limit stop |