Abstract
The influence of an energy input to the supersonic flow around a body by means of a microwave discharge has been investigated experimentally and theoretically. The energy input is provided by an attached undercritical microwave discharge operating in a continuous mode. An attached undercritical microwave discharge is initiated at the end of a vibrator placed into a supersonic M=2 air flow. In full accordance with the earlier theoretical predictions, an energy input upstream of the bow shock wave leads to a decrease in the drag force of a blunt body with good efficiency. The experimental and theoretic investigations carried out provide a positive answer to the principal question concerning the possibility of changing the aerodynamic characteristics of a body in a supersonic flow by means of an energy input. The most effective influence can be provided by a microwave discharge because only this type of discharge is able to add energy upstream of the bow shock wave. Numerical models of these processes have been developed and reflect the main features of the experimental results. These numerical models are being used to assist in the interpretation of the experimental results.
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