公开(公告)号：US10788088B2

公开(公告)日：2020-09-29

申请号：US16274520

申请日：2019-02-13

Applicant: Bell Textron Inc.

Inventor： Eric Stephen Olson ,  Mark Alan Przybyla ,  David R. Bockmiller

IPC: F16D41/07 ,  B64C27/12 ,  F16D1/10 ,  B64D35/08 ,  F16D121/04

Abstract: A selectable clutch assembly for a multimode powertrain of a rotorcraft. The selectable clutch assembly includes a freewheeling unit having input and output sides. The freewheeling unit has a driving mode wherein torque applied to the input side is transferred to the output side and an over running mode wherein torque applied to the output side is not transferred to the input side. A bypass assembly is coupled to and rotatable with the output side of the freewheeling unit and is actuatable between engaged and disengaged positions with the input side of the freewheeling unit. In the disengaged position, the freewheeling unit is operable in the driving and the over running modes such that the selectable clutch assembly is configured for unidirectional torque transfer. In the engaged position, the over running mode of the freewheeling unit is disabled such that the selectable clutch assembly is configured for bidirectional torque transfer.

公开(公告)号：US20200248760A1

公开(公告)日：2020-08-06

申请号：US16274520

申请日：2019-02-13

Applicant: Bell Textron Inc.

Inventor： Eric Stephen Olson ,  Mark Alan Przybyla ,  David R. Bockmiller

IPC: F16D41/07 ,  B64C27/12 ,  B64D35/08 ,  F16D1/10

Abstract: A selectable clutch assembly for a multimode powertrain of a rotorcraft. The selectable clutch assembly includes a freewheeling unit having input and output sides. The freewheeling unit has a driving mode wherein torque applied to the input side is transferred to the output side and an over running mode wherein torque applied to the output side is not transferred to the input side. A bypass assembly is coupled to and rotatable with the output side of the freewheeling unit and is actuatable between engaged and disengaged positions with the input side of the freewheeling unit. In the disengaged position, the freewheeling unit is operable in the driving and the over running modes such that the selectable clutch assembly is configured for unidirectional torque transfer. In the engaged position, the over running mode of the freewheeling unit is disabled such that the selectable clutch assembly is configured for bidirectional torque transfer.