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Article

Measuring Point Planning and Fitting Optimization of the Flange and Spigot Structures of Aeroengine Rotors

by
Tianyi Zhou
1,2,*,
Lei Hu
1,
Xiaoxiao Jin
1,
Ting Li
1,
Yan Zhang
1,
Jianfeng Chen
2 and
Hang Gao
2
1
Shenyang Aircraft Design & Research Institute, Aviation Industry Corporation of China, Ltd., Shenyang 110035, China
2
School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China
*
Author to whom correspondence should be addressed.
Machines 2023, 11(8), 786; https://doi.org/10.3390/machines11080786
Submission received: 25 June 2023 / Revised: 27 July 2023 / Accepted: 28 July 2023 / Published: 31 July 2023
(This article belongs to the Section Turbomachinery)
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Abstract

An optimized measuring point planning and fitting method for rotor flange and spigot structures was proposed to achieve precise measurement of position and pose of the aeroengine rotors during docking processes. Firstly, the impact of circumferential phase angle, distribution range angle, total number of measuring points, and number of distribution rings on measurement uncertainty was analyzed. The measuring point planning schemes for flange and spigot were proposed. Secondly, the Gauss Newton iterative solution principle considering damping factors was clarified. Subsequently, an optimized iterative reweighting method consisting of weight iterative estimation, singular value detection under the Chauvenet criterion, and clustering detection was proposed for fitting the flange annular end face. A mapping point total least squares method with practical geometric significance was proposed for fitting the spigot cylinder face. Finally, measuring and fitting experiments were performed. The singular measuring point detection methods were verified. Under the optimized fitting methods, the goodness of fit and average orthogonal distance of flange and spigot structures are 0.756 and 0.089 mm, respectively, which have higher fitting accuracy than the other traditional methods.
Keywords: aeroengine rotor; flange and spigot; position and pose measurement; measuring point planning; fitting aeroengine rotor; flange and spigot; position and pose measurement; measuring point planning; fitting

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MDPI and ACS Style

Zhou, T.; Hu, L.; Jin, X.; Li, T.; Zhang, Y.; Chen, J.; Gao, H. Measuring Point Planning and Fitting Optimization of the Flange and Spigot Structures of Aeroengine Rotors. Machines 2023, 11, 786. https://doi.org/10.3390/machines11080786

AMA Style

Zhou T, Hu L, Jin X, Li T, Zhang Y, Chen J, Gao H. Measuring Point Planning and Fitting Optimization of the Flange and Spigot Structures of Aeroengine Rotors. Machines. 2023; 11(8):786. https://doi.org/10.3390/machines11080786

Chicago/Turabian Style

Zhou, Tianyi, Lei Hu, Xiaoxiao Jin, Ting Li, Yan Zhang, Jianfeng Chen, and Hang Gao. 2023. "Measuring Point Planning and Fitting Optimization of the Flange and Spigot Structures of Aeroengine Rotors" Machines 11, no. 8: 786. https://doi.org/10.3390/machines11080786

APA Style

Zhou, T., Hu, L., Jin, X., Li, T., Zhang, Y., Chen, J., & Gao, H. (2023). Measuring Point Planning and Fitting Optimization of the Flange and Spigot Structures of Aeroengine Rotors. Machines, 11(8), 786. https://doi.org/10.3390/machines11080786

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