Structural modeling and elastic modulus prediction of aircraft wing ice

Lin TANG; Xuanshi MENG; Ruidi LIU; Xingshi GU; Xian YI

doi:10.7527/S1000-6893.2025.31895

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2025 , Vol. 46 >Issue 20: 531895 - 531895

DOI: https://doi.org/10.7527/S1000-6893.2025.31895

Special Issue: Key Technologies for Supersonic Civil Aircraft

Structural modeling and elastic modulus prediction of aircraft wing ice

Lin TANG ,
Xuanshi MENG ,
Ruidi LIU ,
Xingshi GU ,
Xian YI

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^1.School of Aeronautics，Northwestern Polytechnical University，Xi’an 710000，China
^2.Key Laboratory of Icing and Anti-Icing/De-Icing，State Key Laboratory of Aerodynamics，Mianyang 621000，China
^3.National Key Laboratory of Aircraft Configuration Design，Northwestern Polytechnical University，Xi’an 710000，China

E-mail： yixian_2010@163.com

Received date: 2025-02-26

Revised date: 2025-03-21

Accepted date: 2025-04-11

Online published: 2025-04-17

Supported by

National Natural Science Foundation of China(12132019)

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Abstract

During aircraft flight， the impact of supercooled water droplets on low-temperature surfaces leads to ice formation， a typical dynamic phase transition process. The resulting wing ice contains air bubbles and pores， which significantly affect its elastic modulus. However， existing research lacks quantitative analysis of the elastic modulus of wing ice， making it difficult to support hazard assessment of ice fracture and shedding during air-worthiness certification. We investigate the elastic modulus of wing ice formed by supercooled drop-let impingement， particularly focusing on the effects of porosity and pore morphology （characterized by sphericity）. By simulating real-flight conditions in the icing wind tunnel， uniaxial compression tests were conducted on wing ice samples at various Mach numbers （0.21–0.33） to measure their elastic modulus. The results demonstrate that the elastic modulus of wing ice is highly correlated with porosity， showing increasingly pronounced anisotropy at higher porosity levels. A predictive model based on porosity and pore sphericity is proposed， effectively simulating elastic modulus variations under different icing conditions. These findings provide theoretical support for predicting elastic modulus of wing ice and assessing fracture and shedding risks.

Key words： wing ice; porosity; pore morphology; anisotropy; elastic modulus

Cite this article

Lin TANG , Xuanshi MENG , Ruidi LIU , Xingshi GU , Xian YI . Structural modeling and elastic modulus prediction of aircraft wing ice[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2025 , 46(20) : 531895 -531895 . DOI: 10.7527/S1000-6893.2025.31895

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