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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6078674 B1

PDFFull Text
Date of Patent:
Jun. 20, 2000

Filed:

Jun. 10, 1998

Mass injection for reducing flow-induced resonance in a cavity

Applicant:
Inventors:

Louis N Cattafesta, III, Yorktown, VA (US);

Richard W Wlezien, Yorktown, VA (US);

Chin C Won, Los Altos, CA (US);

Sanjay Garg, Williamsburg, VA (US);

Deepak Shukla, Hampton, VA (US);

Assignee:

High Technology Corporation, Hampton, VA (US);

Attorney:

Van Bergen; Peter J.

Primary Examiner:

Vivian Chang

Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
381 717 ; 244 / ; 244130 ;
Abstract

A method and system are provided for reducing flow-induced resonance in a cavity of a structure. At least one pair of diaphragms are mounted in a housing and separated from one another such that a chamber is formed therebetween within the housing. A first diaphragm of the pair of diaphragms is oscillated in accordance with a time-varying function. A second diaphragm of the pair of diaphragms is oscillated inversely to the first diaphragm so that pressure in the chamber formed therebetween changes in correspondence with the time-varying function. The chamber is vented at a position flush with the surface of the structure along the leading edge of the cavity. As a result of such venting, the pressure in the chamber that changes in correspondence with the time-varying function introduces a corresponding time-varying disturbance into the shear layer along the leading edge of the cavity. The time-varying disturbance reduces the energy that is available in the shear layer that can interact adversely with the cavity to generate resonance.

Find Patent Forward Citations

Cattafesta, III, Louis. (2000). Mass injection for reducing flow-induced resonance in a cavity (U.S. Patent No. 6078674). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6078674

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