Damper and seal for propeller quill shaft
Device for adjusting a rotor blade of a wind energy turbine
Device for controlling the variation in pitch of the blades of a
Device for measuring the displacement travel of a hydraulic...
Devices for operating variable-pitch propellers
Drag operated rotor pitch adjustment system for gyroplanes
Drive mechanism for adjusting the rotor blades of wind power...
Ducted fan and pitch controls for tail rotor of rotary wing airc
Ducted tail rotor for rotor craft
Ducted tail rotor providing torque reaction and yaw attitude con