公开(公告)号：US20220289368A1

公开(公告)日：2022-09-15

申请号：US17198007

申请日：2021-03-10

Applicant: Bell Textron Inc.

Inventor： Andrew Paul HALDEMAN ,  Michael SEIFERT ,  Timothy McClellan MOSIG ,  Aaron ACEE ,  Diana R. TINLIN ,  Andrew Thomas CARTER ,  Glenn Thornton LANCASTER

IPC: B64C27/59 ,  F01D5/02 ,  F01D7/00 ,  F01D5/30

Abstract: A blade pitch adjustment mechanism includes a pitch cylinder having a first face and pitch slots extending longitudinally from the first face, a blade sleeve having a second face and a blade slot extending longitudinally from the second face, the blade sleeve is configured to be rotationally positioned in the pitch cylinder with the second face located with the first face, wherein the blade slot and the pitch slots are cooperative to form keyway, corresponding to a discrete blade pitch, when the blade slot is aligned with a pitch slot.

公开(公告)号：US20220274692A1

公开(公告)日：2022-09-01

申请号：US17188785

申请日：2021-03-01

Applicant: Bell Textron Inc.

Inventor： Andrew Paul HALDEMAN ,  Paul Wayne WOOLBRIGHT ,  Timothy McClellan MOSIG ,  George Matthew THOMPSON

IPC: B64C27/35 ,  B64C27/82 ,  B64C27/48

Abstract: A spherical bearing centrifugal force retention link includes an inboard spherical bearing to attach to a rotor hub and an outboard spherical bearing to attach to a rotor blade. In use, the inboard spherical bearing and the outboard spherical bearing react centrifugal force radially and a torsional moment of the centrifugal force link is substantially constant throughout the rotor blade pitch range.