Propeller blade pin attachment

摘要

A pitch retention member has a mounting surface which receives an elastomeric bearing disposed within a coupling attaching to the root end of the propeller blade. The mounting surface of the pitch retention member is conical. The coupling has a conically shaped bearing mounted therein which is bolted to the root end of the propeller blade. By bolding the coupling to the spar the conically shaped elastomeric bearing is precompressed against the conical mounting surface.