Paper Title:
Design and Optimization of a Piezoelectric Thrust-Measuring Platform for Attitude-Control Rocket Engines
  Abstract

A piezoelectric thrust-measuring platform with high natural frequency is developed for measuring the pulsed thrust generated by attitude-control rocket engines. It consists of two shear mode piezoelectric quartz crystal sensors and an integral shell. The sensors are inserted into the grooves of the elastic rings with an interference fit. Shell stiffness is calculated by energy method (EM) and finite element method (FEM). The shell is optimized for obtaining a good compromise between the sensitivity and frequency response. The stiffness and natural frequency after optimization are verified by experiments. The results show that the stiffness calculated by FEM is more accurate than that calculated by EM. The sensitivity of the thrust-measuring platform is increased by 13.6% compared with before optimization. The natural frequency of the thrust measurement system is 1245 Hz.

  Info
Periodical
Edited by
Ran Chen
Pages
1977-1981
DOI
10.4028/www.scientific.net/AMM.44-47.1977
Citation
Q. Xing, J. Zhang, M. Qian, Z. Y. Jia, B. Y. Sun, "Design and Optimization of a Piezoelectric Thrust-Measuring Platform for Attitude-Control Rocket Engines", Applied Mechanics and Materials, Vols. 44-47, pp. 1977-1981, 2011
Online since
December 2010
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