HELICOPTER ROTOR BLADE HAVING A SELECTIVELY SHAPED AND POSITIONED RAMP TAB BONDED THERETO TO ELIMINATE BLADE PITCHING MOMENT DYNAMIC UNBALANCE

摘要

A helicopter rotor blade having at least one ramp tab of selected span and chord dimensions, weight and shaped to define an outer surface of selected angularity with respect to the blade chord and being selectively positioned along the blade trailing edge and bonded to its upper or lower surface so as to be totally within the blade chord profile and be effective to eliminate or reduce to within acceptable limits blade pitching moment dynamic unbalance.