Effect of the site of heat and mass supply in the near wake of a body of revolution on the body base pressure and drag

It is shown experimentally that in the near wake of a body of revolution in supersonic flow $(1.15<\mathrm{M}< 3.1)$ there are at least two regions in which the heat and mass supply is more effective than that in the conventional schemes of base drag reduction. The first region is located at a distance from the base edge and the second is upstream of the region of attachment of the separated boundary layer. The effects of heat and mass supply on these regions are approximately identical and lead to an increase in the base pressure practically to the static pressure in the incoming flow.