Starting and operating limits of two supersonic wind tunnels utilizing auxiliary air injection downstream of the test section

Henry R. Hunczak, Morris D. Rousso
naca-tn-3262
Sep 1954


The starting and operating pressure ratios were determined for two supersonic wind tunnels which employed air injectors to supplement the primary pumping systems of the tunnels. Data are presented for tunnels operating at Mach numbers 3.85, 3.05, and 2.87 over a range of injector-to-tunnel mass-flow ratios of 0.5 to 1.35.

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