Advanced high performance vertical hybrid synthetic jet actuator

US8052069B2 · kind B2 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Tian-Bing Xu · Chesapeake, US
• Xiaoning Jiang · Raleigh, US
• Ji Su · Highland Park, US

Key dates

• Filing date: Feb 26, 2009
• Grant date: Nov 8, 2011
• Expiry date: Oct 18, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/10
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The present invention comprises a high performance, vertical, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a vertical piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The jet velocity and mass flow rate for the present invention will be several times higher than conventional piezoelectric synthetic jet actuators.