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| Evaluation of Uncertainty in Blade Parameter Measurement Based on Monte Carlo Method |
| ZHANG Xueyi, HE Xiaomei, LIU Junfeng, WANG Zhuoran, WANG Yizhang |
| (AVIC Changcheng Institute of Metrology & Measurement, Beijing 100095, China) |
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Abstract To study the uncertainty evaluation of various parameter errors in the actual measurement results of blades is necessary, due to the blade profile parameters have an important influence on the aerodynamic performance of the engine. Blade quality inspection based on CMM runs through the whole process of blade manufacturing. However, due to the complexity of blade measurement evaluation process and the diversity of parameter evaluation, it is difficult to evaluate the uncertainty of blade measurement results. In this paper, Monte Carlo method is used to build the model and simulate the measurement uncertainty of four typical blade profile parameters, and the uncertainty is compared with the traditional GUM method. The analysis and comparison results verify the correctness of the uncertainty analysis method of blade measurement in this paper, which is conducive to realize the on-line evaluation of measurement uncertainty of blade profile parameters, and is worthy of promotion and application.
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2021, 
