MODIFICATION OF FLUID FLOW ABOUT BODIES AND SURFACES THROUGH VIRTUAL AERO-SHAPING OF AIRFOILS WITH SYNTHETIC JET ACTUATORS

WIPO Patent Application WO2002072421

A3

The present invention involves a system for altering the aerodynamic shape and/or fluid flow about a solid body.(110). The preferred embodiment comprises an obstruction (130) disposed on the solid body and extending outwardly from the solid body into the fluid flowing over the solid body and a synthetic jet actuator (10) embedded in the solid body such that said fluid flowing over the solid body encounters the obstruction before the synthetic jet actuator. The synthetic jet actuator includes a jet housing defined by walls, the jet housing having an internal chamber with a volume of fluid and an opening (16) in the jet housing connecting the chamber to an external environment having the fluid, and a volume changing means for periodically changing the volume within the internal chamber so that a series of fluid vortices are generated and projected in the external environment out from the opening of the jet housing. A synthetic jet stream is formed by the fluid vortices entraining the fluid of the external environment and is projected outwardly from the solid body. The fluid flowing over the solid body contacts the synthetic jet stream forming a recirculation region, thereby modifying both the flow field and the pressure distribution and similarly modifying both the lift and drag characteristics of the solid body.

GLEZER ARI
AMITAY MICHAEL

PCT/US2002/007281

December 04, 2003

March 08, 2002

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GEORGIA TECH RES INST (US)

B64C21/04; B64C23/00; F15D1/12; (IPC1-7): B64C21/08

US5957413A	1999-09-28
US5758823A	1998-06-02
US4563684A	1986-01-07

MASON W.H.: "Further information for experiment #7", October 1996 (1996-10-01), pages 1 - 34, XP002960835, Retrieved from the Internet

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