Patent ID: 11905003
Assignee: MOOG INC.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 6:
7. The rotor blade pitch control system set forth in claim 1, comprising:
a second rotor blade connected to said main rotor and operatively configured to be driven about said central axis of rotation relative to said non-rotating body of the aircraft;
said second rotor blade rotatable about a second pitch axis;
a second blade pitch control motor having a second stator, a second pitch drive rotor and a second pitch follower;
a second linkage extending between said second pitch follower and said second rotor blade;
a second rotor blade coupling between said second linkage and said second rotor blade;
said second rotor blade coupling having a second rotor blade coupling center;
a second pitch follower coupling between said second linkage and said second pitch follower;
said second pitch follower coupling having a second pitch follower coupling center;
a second hinge coupling between said second linkage and said main rotor;
said second hinge coupling having a second hinge axis;
said second pitch drive rotor having a second cam surface orientated about a second driven axis that is eccentric to said central axis of rotation;
said second linkage extending between said main rotor and said second pitch follower such that said second pitch follower coupling center rotates about said central axis of rotation with rotation of said second hinge coupling about said central axis of rotation;
said second pitch drive rotor operatively configured to be driven about said central axis of rotation independently of said main rotor and independently of said first pitch drive rotor to selectively rotate said second driven axis about said central axis of rotation; and
said second driven axis and said second pitch follower coupling center having a selectively variable second displacement angle defined by an inclusive angle between a line extending between said central axis of rotation and said second driven axis and a line extending between said central axis of rotation and said second pitch follower coupling center;
wherein said second pitch drive rotor may be rotated about said central axis of rotation relative to said main rotor to control a pitch of said second rotor blade about said second pitch axis independently of said control of said pitch of said first rotor blade about said first pitch axis.