TY - GEN
T1 - Model Correction and Uncertainty Evaluation of Pressure Measurement for Liquid Rocket Engine
AU - Fang, Junya
AU - Li, Qingbo
AU - Ling, Sirui
AU - Cao, Chun
AU - Zhou, Lei
AU - Huang, Yunzhi
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This study investigates outlier detection and influence factor analysis for the pressure measurement system of a liquid rocket engine. Based on the results of the influence factor analysis, the pressure measurement model is corrected. Concurrently, uncertainty analysis procedures based on the GUM (Guide to the Expression of Uncertainty in Measurement), Monte Carlo, and Bayesian methods are established for both the uncorrected and corrected models, along with comparative analyses. The research findings reveal that the corrected pressure values are higher than the uncorrected values, while the uncertainty results are comparable. Furthermore, when the engine test data exhibit a non-normal distribution, the Monte Carlo and Bayesian methods yield smaller uncertainty estimates compared to the GUM approach.
AB - This study investigates outlier detection and influence factor analysis for the pressure measurement system of a liquid rocket engine. Based on the results of the influence factor analysis, the pressure measurement model is corrected. Concurrently, uncertainty analysis procedures based on the GUM (Guide to the Expression of Uncertainty in Measurement), Monte Carlo, and Bayesian methods are established for both the uncorrected and corrected models, along with comparative analyses. The research findings reveal that the corrected pressure values are higher than the uncorrected values, while the uncertainty results are comparable. Furthermore, when the engine test data exhibit a non-normal distribution, the Monte Carlo and Bayesian methods yield smaller uncertainty estimates compared to the GUM approach.
KW - Liquid rocket engine
KW - model correction
KW - pressure measurement
KW - uncertainty evaluation
UR - https://www.scopus.com/pages/publications/105030463418
U2 - 10.1109/CoMEA66280.2025.11241761
DO - 10.1109/CoMEA66280.2025.11241761
M3 - 会议稿件
AN - SCOPUS:105030463418
T3 - Proceedings of 2025 International Conference of Mechanical Engineering on Aerospace, CoMEA 2025
BT - Proceedings of 2025 International Conference of Mechanical Engineering on Aerospace, CoMEA 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 International Conference of Mechanical Engineering on Aerospace, CoMEA 2025
Y2 - 20 June 2025 through 22 June 2025
ER -