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| Ice Shedding Impact Analysis for Cabin Window of Civil Aircraft |
| Received:July 18, 2020 Revised:August 10, 2020 |
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| DOI：10.7643/issn.1672-9242.2020.09.023 |
| KeyWord:cabin window propeller ice shedding PAM-CRASH simulation test validation |
| Author | Institution |
| LI Ting |
The First Aircraft Institute of AVIC, Xi¢an , China |
| LIANG Yuan |
The First Aircraft Institute of AVIC, Xi¢an , China |
| YANG Kai |
Research and Development Center, AVIC Aircraft CO., LTD, Xi¢an , China |
| FENG Si-dong |
Research and Development Center, AVIC Aircraft CO., LTD, Xi¢an , China |
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| Abstract: |
| The work aims to study the analysis method for cabin window of turboprop aircraft against propeller ice shedding. According to the propeller icing characteristics of a turboprop aircraft, the mass and trajectory of shedding ice were calculated and analyzed to screen out the serious loading condition. A finite element model of cabin window was established and finite element software PAM-CRASH was applied to numerical calculation to obtain structural failure morphology and dynamic response. Ice shedding impact experiment of cabin window was carried out and the results of structural failure and numerical analysis after experiment were analyzed comparatively. The two methods of determining ice mass and ice speed could be applied to different stages of structural ice shedding design. According to the calculation and analysis of icing characteristics, the ice mass of 10.27 g and the vertical speed of 141.1 m/s were more accurate and reasonable. Different ice types caused different degrees of damage to the structure when impacting various parts of the structure. Under the same cuboid ice pattern, the smaller the incident cross-sectional area was, the more serious the window damage was. When different parts of window were hit, the corner was more serious than the center point in view of damage. The experimental results are basically consistent with the simulation results, which can verify the accuracy of the cabin window analysis model and analysis method, and provide reference for cabin window design in propeller ice shedding area. |
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