Patent · US Active

Variable pitch propeller rotor

US9302765B2 · kind B2 · utility

0Cited by

5References

9Claims

0Family size

Assignee

ROLLS-ROYCE plc

Inventors

Stewart T. THORNTON · Derby, GB
Paul Simms · Leicester, GB
Colin W R McFarlane · Milton Keynes, GB

Key dates

Filing date	Apr 27, 2012
Grant date	Apr 5, 2016
Priority date	—
Expiry date	Oct 25, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T50/60
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A bladed rotor comprises a rotor body 2 carrying blades 6, whose pitch can be varied by means of a pitch input shaft 10. The pitch input shaft 10 drives the respective blade 6 about a spanwise axis X of the blade through a harmonic drive reduction gear 14. The harmonic drive reduction gear 14 comprises a wave generator 16 which is fixed for rotation on the pitch input shaft 10 and a flex spline which meshes with a circular spline 20 and is secured to the blade 6.

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