Panel assembly with noise attenuation system

US9630575B2 · kind B2 · utility

Assignee

• GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

• Qijun Zhang · Hainan, CN
• Mark A. Stebbins · Bloomfield Hills, US
• Christopher A. Stirlen · Milford, US
• Michael E. McGuire · Milford, US
• Andrew J. Baines · Novi, US
• John Howard · Fenton, US
• Joseph A. Schudt · Chesterfield Township, US

Key dates

• Filing date: Sep 30, 2015
• Grant date: Apr 25, 2017
• Expiry date: Sep 30, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G10K11/168
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A panel assembly includes a first panel defining a surface, and a boom attenuation panel. The boom attenuation panel includes a circumferential edge, and a central portion. The boom attenuation panel is attached to the surface of the first panel, along the circumferential edge of the boom attenuation panel. The central portion of the boom attenuation panel is spaced from the surface of the first panel a gap distance to form a gas chamber between the surface of the first panel and the central portion of the boom attenuation panel. The gas chamber contains a gas that is moveable within the gas chamber in response to wave-like motion of the first panel. Movement of the gas increases the effective acoustic mass of the boom attenuation panel, and damped the wave-like motion of the first panel, which operates to reduce noise generated from the wave-like motion of the first panel.