Energy transfer in hypersonic plasma flow and flow structure control by low temperature nonequilibrium plasma

Experimental data on the non-equilibrium plasma - gas flow interaction for hypersonic flows and the gas parameters during shock wave - non-equilibrium plasma interaction were obtained. The numerical code that describes interaction of the shock wave and non-equilibrium plasma for different mixtures was constructed. Basic factors that determine the interaction process in such a system and the effect of charged and excited particles on the interaction dynamics were revealed. An experimental data for the gas discharge influence on the flow pattern around the model in the wind channel with Mach number M ∼ 8 were obtained. The measurements of the drag force for different gas discharge parameters were performed. The conclusion was made that the gas discharge affects the flow mainly by thermal heating in the investigated range of parameters. Calculations support the conclusion about the thermal nature of the shock wave-plasma interaction. The emission from gas mixtures corresponded to Earth and Mars atmospheres were analyzed using different types of excitation. The results obtained about non-equilibrium radiation in different types of the gas discharges (glow, microwave and pulsed high-voltage) allow to analyze the main spectral regions of energy transfer. It was found that emitting chemical species in Mars atmosphere differ sensibly from those found in Earth plasmas.