Аннотация:This paper presents the combustion modes of gas-discharge plasma and its quasi-stationarystate in the aerodynamic unit of a laboratory facility. A research model is shown in the form of a flat channel with electrodes, pressure, and heat flow sensors. The mutual influence of gas-dischargeplasma and air flow at a Mach speed of M = 2.9 is investigated. Transformation of the gas-dischargecolumn glow in the f low and shadow patterns of shock-wave structures are recorded on video.We show the influence of the discharge energy deposition on the state of the discharge column glowand on the flow. We demonstrate the existence of a normal glow discharge in the flow, an increase inheating, and a decrease in pressure on the surface of the model.