Browse > Article
http://dx.doi.org/10.5139/JKSAS.2004.32.7.019

A Study on the Method of Equilibrium-Pressure Prediction from Transient Data  

Lee, Jong-Kook (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.7, 2004 , pp. 19-28 More about this Journal
Abstract
This study is concerned with the method of equilibrium-pressure prediction from transient data. Pressure measurement system consisted of pressure sensor and pressure tube. The surface orifice where pressure is measured is connected to a pressure sensor by a tube. In case of high orifice pressure, the pressure sensor responds rapidly to the orifice pressure. But when the orifice pressure is low the pressure sensor does not respond rapidly to the orifice pressure and time lag occurs seriously. Various test conditions are applied to investigate the time lag and to assess the methods of equilibrium-pressure prediction. The test time of the low-pressure measurement can be reduced by the method of equilibrium-pressure prediction of the present study.
Keywords
Time Lag; Transient Pressure; Equilibrium Pressure;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Brown, Gorden P., DiNardo, Albert, Cheng, George K. and Sherwood, Thomas K., "The Flow of Gases in Pipes at Low Pressures", Journal of Applied Physics, Vol. 17, Oct. 1946, pp.802-813.   DOI
2 Kendall, J. M., "Optimized Design of Systems for Measuring Low Pressures in Supersonic Wind Tunnels", AGARD Report 174, Mar. 1958.
3 McKee, M. L., "Digital Computer Oriented Methods for Determining the Response of Pressure Measurement Systems to Step and Ramp Forcing Functions", AEDC-TR-66-225, Mar. 1967.
4 Brown, David. L., "Predicting Equilibrium Pressures from Transient Pressure Data", ARL 65-7, Jan. 1965.
5 Parks, Edwin K., Bach, Ralph E. Jr ., and Tran, Duc, "Sideslip-Induced Static Pressure Errors in Flight-Test Measurements", NASA TM 102846, Jun. 1990.
6 Davis, Mark C., Pahle, Joseph W., "Development of a Flush Airdata Sensing System on a Sharp-Nosed Vehicle for Flight at Mach 3 to 8", NASA TM 2000 209017, May 2000.