Device and method for reducing aircraft noise

US6471157B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Craig L. Streett · Yorktown, US
• John Lin

Key dates

• Filing date: Mar 22, 2000
• Grant date: Oct 29, 2002
• Expiry date: Mar 22, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A noise abatement device that is positioned adjacent to a body. The noise abatement device generally includes tabs or cavities which thicken the shear layer created by fluid flow over, around, or near the body, by creating horseshoe-shaped vortices; this thickening of the shear layer reduces the strength of fluctuations in the flow which produce noise.