The centrifugal turning moments on a variable pitch fan blade are counter balanced by the centrifugal force on a cam follower member which is reacted by a cam member connected to the blade to provide a turning moment on the blade opposite to the centrifugal turning moment. The cam member is a cylinder surrounding the blade root and having at least one cam track. A reaction member in the form of a second cylinder concentric with the cam member and having oppositely inclined corresponding cam tracks is connected to structure stationary relative to the blade. The cam follower member is a roller engaging the cam tracks on both the cam member and the reaction member.
申请公布号
DE2220468(C3)
申请公布日期
1980.02.07
申请号
DE19722220468
申请日期
1972.04.26
申请人
ROLLS-ROYCE LTD., LONDON
发明人
MCMURTRY, DAVID ROBERTS, ALVESTON, BRISTOL (VER. KOENIGREICH)
