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Experimental studies of damage to aircraft skin under the influence of raindrops

  • Minggong Sha (School of Civil Aviation, Northwestern Polytechnical University) ;
  • Ying Sun (Moscow Aviation Institute) ;
  • Li Yulong (School of Civil Aviation, Northwestern Polytechnical University) ;
  • Vladimir I. Goncharenko (Moscow Aviation Institute) ;
  • Vladimir S. Oleshko (Moscow Aviation Institute) ;
  • Anatoly V. Ryapukhin (Moscow Aviation Institute) ;
  • Victor M. Yurov (Karaganda Technical University)
  • Received : 2023.12.19
  • Accepted : 2024.02.11
  • Published : 2023.11.25
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Abstract

Airplanes in flight collide with raindrops, and the leading edges of the airframe can be damaged when colliding with raindrops. A single waterjet testing platform was created to study rain erosion damage. Carbon fiber samples with three types of skins were studied and the mechanical properties were measured using a nanoindentation instrument. The research results show that the impact force on the sample increases with the continuous increase in the impact speed of raindrops, which leads to an increase in the damage area. Sheathing with low surface roughness is more damaged than other sheathings due to its rougher surface, and the result proves that surface roughness has a more significant effect on rain erosion damage to sheathings compared to their hardness.

Keywords

Acknowledgement

This work was supported by the National Natural Science Foundation of China (Nos. 12261131505, 11832015), Basic Research Programs of Taicang (Nos. TC2020JC30).

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