David W Coe

US Patent:

57588236, Jun 2, 1998

Filed:

Jun 12, 1995

Appl. No.:

8/489490

Inventors:

Ari Glezer - Atlanta GA
Mark G. Allen - Atlanta GA
David J. Coe - Atlanta GA
Barton L. Smith - Decatur GA
Mark A. Trautman - Decatur GA
John W. Wiltse - Marietta GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

B05B 1706

US Classification:

239 4

Abstract:

Synthetic jet actuator, which can be micromachined if desired, generates a synthetic jet stream characterized by a series of successive vortices that can be used for effectively entraining adjacent fluid. The synthetic jet actuator can be used to bend, or vector, a jet stream from another jet actuator. Further, because the synthetic jet actuator exhibits zero net mass flux, the synthetic jet actuator can be used within a bounded volume. In structure, the synthetic jet actuator comprises a housing defining an internal chamber and having an orifice. A flexible metallized diaphragm forms a wall of the housing and can change the volume of the chamber when moved. An electrode is disposed adjacent to and spaced from the diaphragm, and an electrical bias is imposed between the metallized diaphragm and the electrode by a control system to force movement of the diaphragm. As the diaphragm moves, the volume in the internal chamber changes and vortices are ejected from the chamber through the orifice.

US Patent:

58949909, Apr 20, 1999

Filed:

Oct 9, 1997

Appl. No.:

8/947815

Inventors:

Ari Glezer - Atlanta GA
Mark G. Allen - Atlanta GA
David J. Coe - Atlanta GA
Barton L. Smith - Decatur GA
Mark A. Trautman - Decatur GA
John W. Wiltse - Marietta GA

Assignee:

Georgia Tech Research Corporation - Atlanta GA

International Classification:

B05B 1706

US Classification:

239423

Abstract:

A synthetic jet actuator, which can be micromachined if desired, generates a synthetic jet stream characterized by a series of successive vortices that can be used for effectively entraining adjacent fluid. The synthetic jet actuator can be used to bend, or vector, a jet stream from another jet actuator. Further, because the synthetic jet actuator exhibits zero net mass flux, the synthetic jet actuator can be used within a bounded volume. In structure, the synthetic jet actuator comprises a housing defining an internal chamber and having an orifice. A flexible metallized diaphragm forms a wall of the housing and can change the volume of the chamber when moved. An electrode is disposed adjacent to and spaced from the diaphragm, and an electrical bias is imposed between the metallized diaphragm and the electrode by a control system to force movement of the diaphragm. As the diaphragm moves, the volume in the internal chamber changes and vortices are ejected from the chamber through the orifice.