Patent · US Active

Feedback device with non-axially aligned position markers

US11333020B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

PRATT & WHITNEY CANADA CORP. · CA

Inventors

Sean Durand · Brossard, CA
Richard Kudrna · Carignan, CA
Ian Farrell · Saint-Lambert, CA

Key dates

Filing date	Jan 9, 2020
Grant date	May 17, 2022
Priority date	—
Expiry date	Jul 4, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05D2270/80
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A blade angle feedback assembly for an aircraft-bladed rotor is provided. The rotor is rotatable about a longitudinal axis and has an adjustable blade pitch angle. The assembly comprises a feedback device coupled to rotate with the rotor with adjustment of the blade pitch angle, the feedback device having a root surface, a plurality of position makers circumferentially disposed on the root surface, the plurality of position markers circumferentially spaced from one another and non-aligned with the longitudinal axis, and at least one sensor mounted adjacent the feedback device and configured to detect a passage of the plurality of position markers as the feedback device rotates about the longitudinal axis.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.