AN EXPERIMENTAL INVESTIGATION OF THE FLAP-LAG STABILITY OF A HINGELESS ROTOR WITH COMPARABLE LEVELS OF HUB AND BLADE STIFFNESS IN HOVERING FLIGHT

摘要

The results of an experimental investigation of the flap-lag stability of a hingeless rotor in hovering flight are presented and discussed. The rotor blade and hub configuration were selected such that the hub and blade had comparable levels of bending stiffness.nThe experimental results presented here complement experimental results reported in the literature. In these previous experiments all of the bending flexibility in the rotor system was provided by the hub and the blade was effectively rigid.