INVESTIGATION OF FLOW VARIABLES OVER A SERIES OF REARWARD FACING STEPPED FLAT PLATES AT A NOMINAL MACH NUMBER OF 4.15
AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH
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A study was made of the aerodynamic characteristics over a flat plate with basic changes in the flow field imposed by geometric and aerodynamic means. Pressure distributions and Schlieren photographs were used to show the effects of 1 leading edge bluntness, 2 rearward facing step, 3 rearward facing step with gas ejected from the vertical face of the step, and 4 a control surface. Although three dimensional effects were large at high angles of attack, the flat plate results correlated well with theory and other experimental data. The effects of leading edge bluntness, step height, and ejection angle are small. The effect of gas ejection, in the manner tested, is not sufficient to produce the effect of a physical control surface.
- Fluid Mechanics