Measurements of test time in the GALCIT 17-inch shock tube

Abstract

Experimental measurements of test time were obtained in the GALCIT 17-in. shock tube using both air and argon for driven gases. One series of tests was conducted using a constant driver pressure (pure helium) for various initial pressures of the driven gases. Another series was conducted using air for the driven gas at various initial pressures holding the shock Mach number constant. The data are presented and compared to theoretical predictions computed from the theory in two recent papers by Mirels for the case of a laminar and turbulent wall boundary layer.

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