公开(公告)号：US11604059B2

公开(公告)日：2023-03-14

申请号：US16915877

申请日：2020-06-29

Applicant: Bell Textron Inc.

Inventor： Charles Eric Covington ,  Randall Lee Johnson ,  Hunter Barton Nelson ,  Michael David Trantham

IPC: G01B7/30 ,  G01P3/44 ,  B64C27/57 ,  B64D45/00 ,  G01M5/00 ,  B64C29/00

Abstract: A rotorcraft comprising a rotor blade designed to flap about a hinge point, a measurement system designed to measure blade flapping, and a processing system designed to alter blade flapping measurements. The processing system further comprises a correction process to alter a blade flapping measurement dependent on rotor RPM or rotor torque.

公开(公告)号：US20210070430A1

公开(公告)日：2021-03-11

申请号：US17063712

申请日：2020-10-05

Applicant: Bell Textron Inc.

Inventor： Douglas Andrew Goodwin ,  David Andrew Prater ,  Eric Stephen Olson ,  David Bryan Roberts ,  Chia-Wei Su ,  Michael David Trantham ,  Charles Eric Covington

IPC: B64C27/12 ,  B64D35/08 ,  F16D41/04

Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.