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.