Heat transfer of subsonic jets of dissociated gas flowing from slit nozzles with outlet sections of 40 × 8, 80 × 15 and 120 × 9 mm with the plate surface at an angle of attack was experimentally studied in the HF-plasmatron VGU-4. Heat flux distributions along the axis of symmetry of the copper plates were obtained depending on the power of the anode supply of the HF-generator and the slit nozzle geometry. Heat fluxes on the low-catalytic surface of the heat-shielding tile of the «Buran» orbiter were determined depending on the pressure in the plasmatron chamber when using a slit nozzle with an outlet section of 120 × 9 mm.
