公开(公告)号：US11518506B2

公开(公告)日：2022-12-06

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: F04D29/36 ,  B64C27/59 ,  F01D7/00 ,  F01D5/30 ,  F01D5/02 ,  B64C11/06 ,  F04D29/32

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.