Patent · US Expired

Blade with reduced sound signature, for aircraft rotating aerofoil, and rotating aerofoil comprising such a blade

US6116857A · kind A · utility

31Cited by

7References

15Claims

0Family size

Assignee

ONERA · FR

Inventors

Wolf R. Splettstoesser · Braunschweig, DE
Berend Van De Wall · Braunschweig, DE
Yves Delrieux · Saint-Denis, FR
Patrick Gardarein · Ville-d'Avray, FR

Key dates

Filing date	Aug 28, 1998
Grant date	Sep 12, 2000
Priority date	—
Expiry date	Aug 28, 2018

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/467
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A blade is disclosed for an aircraft rotating aerofoil. The aerodynamically profiled main part of the blade includes an external end part adjacent to the tip of the blade and extending along the span over a distance of at least 0.2 R, where R is the radius of the rotor. The end part having a rear camber over a distance along the span of at least 0.15 R, and the aerodynamically profiled main part includes also a front cambered part, immediately adjacent to the inside of the rear cambered end part.

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