AN EXPERIMENTAL INVESTIGATION A HIGHLY UNDEREXPANDED SONIC JET EJECTING FROM A FLAT PLATE INTO A SUBSONIC CROSSFLOW

摘要

The induced static pressures due to a highly underexpanded sonic jet ejecting normally from a flat plate into a subsonic crosswind have been investigated. These pressure data have been recorded on the flat plate for a range of nominal jet-to-free-stream dynamic-pressure ratios from 0 to 1000 at free-stream Mach numbers of 0.1, 0.2, 0.4, and 0.6. The static-pressure data measured on the flat plate are presented and correlated based upon the Riemann shock geometry in the jet plume. This data correlation improves with increasing free-stream Mach number.