公开(公告)号：US20200255123A1

公开(公告)日：2020-08-13

申请号：US16271276

申请日：2019-02-08

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Paul W. Futa, Jr. ,  Hannah Amor ,  Gary A. Valencourt ,  Christopher Douglas Eick ,  Donald Striker ,  Kevin Baker ,  Jonathan Seeley

IPC: B64C11/38 ,  F01D7/00 ,  B64C11/44

Abstract: A propeller pitch control system for a turboprop engine of an aircraft includes a negative torque sensor, a full feather control valve assembly, and a feather valve assembly. The feather valve assembly is responsive to fluid pressures from the negative torque sensor and the control valve assembly to move between a plurality of positions. An engine control unit or a manual user interface can also be used to control the position of the feather.

公开(公告)号：US10807701B2

公开(公告)日：2020-10-20

申请号：US16271276

申请日：2019-02-08

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Paul W. Futa, Jr. ,  Hannah Amor ,  Gary A. Valencourt ,  Christopher Douglas Eick ,  Donald Striker ,  Kevin Baker ,  Jonathan Seeley

IPC: B64C11/38 ,  B64C11/44 ,  F01D7/00 ,  B64C27/64 ,  B64C11/40 ,  B64C11/30 ,  B64C11/42

Abstract: A propeller pitch control system for a turboprop engine of an aircraft includes a negative torque sensor, a full feather control valve assembly, and a feather valve assembly. The feather valve assembly is responsive to fluid pressures from the negative torque sensor and the control valve assembly to move between a plurality of positions. An engine control unit or a manual user interface can also be used to control the position of the feather.