An Experimental Study Of The Sources Of Fluctuating Pressure Loads Beneath Swept Shock Boundary Layer Interactions
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An Experimental Study of Fluctuating Pressure Loads Beneath Swept Shock/Boundary-Layer Interactions
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 28 |
Release | : 2018-08-16 |
Genre | : |
ISBN | : 9781725096882 |
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A database is established on the fluctuating pressure loads produced on aerodynamic surfaces beneath 3-D shock wave/boundary layer interactions. Such loads constitute a fundamental problem of critical concern to future supersonic and hypersonic flight vehicles. A turbulent boundary layer on a flat plate is subjected to interactions with swept planar shock waves generated by sharp fins. Fin angles from 5 to 25 deg at freestream Mach numbers between 2.5 and 4 produce a variety of interaction strengths from weak to very strong. Miniature Kulite pressure transducers mounted in the flat plate were used to measure interaction-induced wall pressure fluctuations. These data will be correlated with proposed new optical data on the fluctuations of the interaction structure, especially that of the lambda-shock system and its associated high-speed jet impingement. Settles, Gary S. Unspecified Center NASA-CR-188919, NAS 1.26:188919 NAG1-1070...