公开(公告)号：US20190047692A1

公开(公告)日：2019-02-14

申请号：US16051343

申请日：2018-07-31

Applicant: Bell Helicopter Textron Inc.

Inventor： Troy Cyril Schank ,  Andrew Ryan Maresh ,  Chyau-Song Tzeng

IPC: B64C27/32 ,  B64C29/00

Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The proprotor hub assembly includes a hook receiver. The propulsion assembly includes a gimbal lock positioned about the mast. The gimbal lock includes a locking ring and a gimbal lock hook. The gimbal lock is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. The gimbal lock enables the gimballing degree of freedom in the disengaged position and disables the gimballing degree of freedom in the engaged position. The gimbal lock hook is hooked to the hook receiver in the engaged position to secure the locking ring to the proprotor hub assembly.

公开(公告)号：US20190047691A1

公开(公告)日：2019-02-14

申请号：US16051334

申请日：2018-07-31

Applicant: Bell Helicopter Textron Inc.

Inventor： Troy Cyril Schank ,  Andrew Ryan Maresh ,  Chyau-Song Tzeng

IPC: B64C27/32 ,  B64C29/00 ,  B64C11/28 ,  B64C37/00

Abstract: A propulsion assembly for a rotorcraft includes a mast and a proprotor hub assembly coupled to the mast and having a gimballing degree of freedom relative to the mast. The propulsion assembly includes a gimbal lock assembly positioned about the mast and including a plurality of radially outwardly extending and circumferentially distributed rollers. The gimbal lock assembly is movable between a disengaged position and an engaged position relative to the proprotor hub assembly. In the disengaged position, the gimbal lock assembly enables the gimballing degree of freedom. In the engaged position, the rollers of the gimbal lock assembly contact the proprotor hub assembly to disable the gimballing degree.

公开(公告)号：US20190016441A1

公开(公告)日：2019-01-17

申请号：US16035397

申请日：2018-07-13

Applicant: Bell Helicopter Textron Inc.

Inventor： Troy Cyril Schank ,  Andrew Ryan Maresh ,  Chyau-Song Tzeng

IPC: B64C11/28 ,  B64C11/32 ,  B64C27/30 ,  B64C29/00

Abstract: A mechanism for folding a rotor blade that is rotatably coupled to a blade cuff about a blade-fold axis between an extended position and a folded position. The mechanism includes a swash plate configured to translate relative to a mast, a pitch link rotatably coupled to the swash plate, a pitch horn rotatably coupled to the pitch link, a crank coupled to the pitch horn, and a link rotatably coupled to the crank and rotatably coupled to the rotor blade. The pitch horn and the crank being configured to commonly rotate relative to the blade cuff about a crank axis in response to translation of the swash plate, wherein the crank axis passes through the blade cuff.