The Response Times of Typical Transducer-Tube Configurations for the Measurement of Pressures in High-Speed Wind Tunnels

摘要

The theories of Kendall and Davis are extended to obtain the response time for low pressures with slip flow in a compound tube system. The theory provides a useful estimate of the response time, even when the volume of the measuring instrument falls to zero, and predicts the correct trends for the effects of varying the applied pressure and the tube geometry.nHowever, the detail design of a pressure-measuring system remains dependent on experimentally-determined response times. Comprehensive data are therefore presented from the present experiment covering a range of tube configurations, incorporating a flush-diaphragm pressure transducer as the measuring instrument, suitable for the measurement of model pressures in high-speed wind tunnels.