METHOD FOR CORRECTION OF THE SYSTEMATIC ERRORS IN DETECTED SHOCK WAVE PASSAGE TIMES IN THE SHOCK TUBE

Francisco Javier Hernández Castro, Andrej Svete, Jože Kutin

Abstract

The most important uncertainty component of the pressure step signal determined at the end-wall of the shock tube is associated with the uncertainties of the shock wave velocity and the arrival time of the shock front. Both are determined using a time-of-flight method and are therefore greatly affected by the errors in the detected times of the shock wave passages over the side-wall pressure sensors installed along the shock tube. This paper introduces a method for an automated correction of the systematic errors due to non-ideal dynamic response of the side-wall pressure sensors.

Keywords

diaphragmless shock tube; time-varying pressure; time-of-flight method; dynamic response; correction

Download

IMEKO-TC16-2022-138.pdf

DOI

10.21014/tc16-2022.138

IMEKO TC

TC16 - Pressure and Vacuum Measurement

Back to the proceedings