Patent · US Active

Wind turbine blade

US9617974B2 · kind B2 · utility

5Cited by

2References

15Claims

0Family size

Assignee

LM WP PATENT HOLDING A/S · DK

Inventor

Ashish Singh · Munich, DE

Key dates

Filing date	Nov 15, 2012
Grant date	Apr 11, 2017
Priority date	—
Expiry date	Jan 11, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E10/72
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A wind turbine blade is described having noise reduction features. The blade has a plurality of projecting serrations provided at the blade trailing edge to reduce the scattering noise produced during operation of the blade, wherein the serrations have a plurality of through-going apertures defined in the serration body. The apertures act to provide a pressure equalization effect at the serrations between the suction and pressure sides. This pressure equalization provides for improved noise reduction performance, as well as a reduction in mechanical stresses and strains which may be experienced by the serrations, increasing serration lifetime.

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