Aircraft weapons bay acoustic suppression apparatus
US6296202A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D1/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An aircraft weapons bay acoustic suppression apparatus is disclosed. The apparatus reduces or eliminates acoustic resonance within an open cavity of an aircraft such as a weapons bay of an aircraft in flight. The apparatus includes an oscillatable spoiler plate which is extended into the airstream. At least one shaker is placed in operative engagement with the spoiler plate in order to oscillate the spoiler plate at high frequencies and high amplitudes to seed the shear layer with frequencies which directly complete with the natural frequency of the shear layer vortices. In this way, the damage arising from natural shear layer vortices can reduced or canceled within the weapons bay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.