The flow of a jet from a body opposing a supersonic free stream

TLDR

Previous investigations of jet–body interactions in supersonic flow are reviewed and re‑examined in light of the present study. Experiments and an analytical model show that jet flow from a body nose in a supersonic stream, opposing the mainstream, is governed by a jet flow‑force coefficient and the jet exit Mach number. A sufficient condition for steady jet–body flow is identified, and experiments confirm the model’s predictions.

Abstract

A series of experiments is described in which a jet issues from an orifice at the nose of a body in supersonic flow to oppose the mainstream. An analytical model of the flow is developed which suggests that the aerodynamic features of a steady flow depend primarily on a jet flow-force coefficient, and the Mach number of the jet in its exit plane. A sufficient condition for steady flow is developed. The experiments are found to agree well with predictions based on the flow model. A short account is presented of some previous investigations, and some of their conclusions are re-examined in the light of the present study.