Two-Component Capacitance-Type Displacement Detector

Abstract

RESULTSEvaluation tests were made using a shock tube 4 to accelerate air, initially at atmospheric pressure and temperature, to a speed of 1800 feet per second. Schlieren pictures were taken of the air flowing from the shock tube over a slender cone placed in the stream (Fig. 2). A delay time of 200 f.J.sec was used between sparks so as to photograph the flow field of particular interest in this test. 4 Wittliff, Wilson, and Hertzberg, "The tailored-interface hypersonic shock tunnel," paper presented at