Technical Memorandum of National Aerospace Laboratory
巻
475
ページ
11
発行年
1982-10
抄録（英）
A measuring technique using tubes and scanning valves was developed by Bergh and Tijdeman at NLR in the Netherlands.The theoretical and experimental results are presented in Reference 1.This report describes the results of measurement of the dynamic response of tubes for the unsteady pressure measuring system used on an oscillating wing.In order to measure the dynamic response of the system,a device was developed which uses a pressure pulsator consisting of a motor-driven sine-wave cam and an air jet.The two sinusoidal signals of fluctuation pressure at both ends of the tube were analysed by the program of a Complex Fast Fourier Transformation (FFT).This method turned out to be a much simpler way to measure the response characteristics of the system than the NLR method.The response characteristics of pressure measuring systems with different tube lengths of a certain tube radius for the D type scanning valve were obtained.The experimental results agreed well with the theoretical ones.
圧力測定系における管の応答特性
naltm00475.pdf
(868.66KB)
