Aeronautics and astronautics – Aircraft control – Automatic
Reexamination Certificate
2008-06-03
2008-06-03
Collins, Timothy D. (Department: 3643)
Aeronautics and astronautics
Aircraft control
Automatic
C244S205000, C244S198000, C244S130000
Reexamination Certificate
active
07380756
ABSTRACT:
A single dielectric barrier aerodynamic plasma actuator apparatus based on the dielectric barrier discharge phenomenon is disclosed and suggested for application to aerodynamic uses for drag reduction, stall elimination and airfoil efficiency improvement. In the plasma actuator apparatus non-uniform in time and space, partially ionized gasses are generated by one or more electrode pairs each having one electrically encapsulated electrode and one air stream exposed electrode and energization by a high-voltage alternating current waveform. The influence of electrical waveform variation, electrode polarity, electrode size and electrode shape on the achieved plasma are considered along with theoretical verification of achieved results. Light output, generated thrust, ionizing current waveform and magnitude and other variables are considered. Misconceptions prevailing in the present day plasma generation art are addressed and are believed-to-be corrected. The influence of electrostatic shielding effects of the developed plasma on the applied electric field are also considered.
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Corke Thomas C.
Enloe Carl L.
Jumper Eric J.
McLaughlin Thomas E.
AFMCLO/JAZ
Collins Timothy D.
Hollins Gerald B.
The United States of America as represented by the Secretary of
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