Skin friction measurements in a Mach 6 inlet test
Conference Paper
Overview
Overview
abstract
1997, American Institute of Aeronautics and Astronautics, Inc. An experimental investigation was carried out to measure skin friction in a Mach 6 freejet test of a scram jet inlet component test. The investigation was performed in the Air Force Wright Laboratory Flight Dynamics Directorates Mach 6 wind tunnel. The model simulated a movable cowl mounted on a sidewall compression plate. The skin friction gauge uses a floating element supported by a miniature cantilever beam which is instrumented with strain gauges to measure the beam deflection. Several measurements were taken on the sidewall compression plate without the cowl lip, effectively a flat plate. Measurements were made of both laminar and turbulent boundary layers. Comparison between the measured skin friction and two turbulent boundary layer skin friction correlations, the Van Driest II and Spalding and Chi, showed that the Spalding and Chi more accurately matched the measured conditions.
