公开(公告)号：US20200070996A1

公开(公告)日：2020-03-05

申请号：US16120676

申请日：2018-09-04

申请人： Bell Helicopter Textron Inc.

发明人： Levi C. Hefner ,  Frank B. Stamps ,  Alan C. Ewing ,  Jaret F. Burgess ,  Carey W. Cannon

IPC分类号： B64D35/04 ,  B64C27/26 ,  B64C27/14 ,  B64C27/06 ,  B64C27/82 ,  B64C11/30

摘要： A pusher rotorcraft is provided in one example embodiment and may include at least one engine in mechanical communication with a drop-down gearbox; a driveshaft in mechanical communication with the drop-down gearbox, a main rotor gearbox, and a tail system gearbox; a main rotor system in mechanical communication with the main rotor gearbox; an anti-torque system in mechanical communication with the tail system gearbox; and a pusher propeller system in mechanical communication with the tail system gearbox.

公开(公告)号：US20180327086A1

公开(公告)日：2018-11-15

申请号：US15594588

申请日：2017-05-13

申请人： Bell Helicopter Textron Inc.

发明人： Jaret F. Burgess ,  Frank Bradley Stamps

IPC分类号： B64C27/32 ,  B64C27/605 ,  B64C29/00 ,  B64C27/06 ,  F16C19/06

CPC分类号： B64C27/32 ,  B64C27/06 ,  B64C27/605 ,  B64C29/0033 ,  F16C19/06 ,  F16C2326/43

摘要： An aircraft rotor assembly has a yoke with at least two arms extending therefrom. The yoke is attached to a mast through a constant-velocity joint, thereby permitting axial tilt of the yoke relative to the mast. Each arm of the yoke includes an axisymmetric elastomeric bearing with a spherical central member and two opposite partially-spherical members attached to the central member. Each axisymmetric bearing cooperates with a cup and a bracket. Each cup is attached to one of the yoke arms and each bracket is attached to a blade cuff.