Craven, A. H.
Description:
This paper presents the results of an experimental investigation into the effect of supersonic jets upon the base pressure of a bluff
cylinder in a uniform subsonic flow. The ratio of jot diameter to base
diameter was 0.1875.
Jet stagnation pressures giving slight under-expansion of the jet
cause an increase in the base pressure but for larger jet stagnation
pressures the base pressure is again reduced.
A simple theory, based on a momentum integral, shows the dependence
of the base drag upon the jet and free stream speeds and upon the dimensions
of the jet and the base.