Evaluation of Probes for Measuring Static Pressure in Supersonic and Hypersonic Flows
Final rept. Jul-Oct 1970
ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN
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Pertinent facts in the literature have been examined regarding the aerodynamic characteristics of static-pressure measuring probes in order to assess the relative merits and limitations of cone-cylinder, sharp-cone, and planar disk probes. The effects of Mach number, angle of attack, orifice location, and Reynolds number on the inferred local pressures were all evaluated at Mach numbers up to 8. It is concluded that the planar probe and sharp-cone probe if properly designed are equally more accurate than the cone-cylinder probe at supersonic and hypersonic speeds. However, the cone-cylinder is judged to be superior for use at Mach numbers below 4. Details of a recommended procedure to correct for the effects of viscous interaction all probes and angle of attack planar probes only are included.
- Test Facilities, Equipment and Methods