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| Structure Damage Analysis and Repair Assessment for No.4 Fuel Tank of an Aircraft |
| Received:August 29, 2018 Revised:January 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.01.025 |
| KeyWord:aircraft fuel tank damage reinforce repair |
| Author | Institution |
| YANG Jia-qin |
1. Wuhu State-owned Factory of Machining, Wuhu , China |
| XU Guang-qun |
1. Wuhu State-owned Factory of Machining, Wuhu , China |
| GUAN Yu |
2. Shenyang Aircraft Design and Research Institute, Shenyang , China |
| JI Guo-liang |
1. Wuhu State-owned Factory of Machining, Wuhu , China |
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| Abstract: |
| Objective To analyze causes and make repair procedures for structure damages at different levels of No.4 fuel tank found in the use of a two-seater aircraft. Methods After in-depth inspection and evaluation of the No.4 tank structure, the causes of damage were comprehensively analyzed from the structural damage process, load condition, design, manufacture and the use of cracks. The strength of the actual damage structure of the fuel tank was calculated and evaluated to formulate plans for repair of structural damage and propose suggestions on repair improvement. Results According to the analysis, the main cause of the damage was design and manufacturing defects in the No.4 fuel tank. And when the aircraft was in overload flight, the No.4 tank may be in a high-load state with full oil or a large amount of residual oil. The repair producers formulated based on the causes of damage passed the static strength check and evaluation and were verified of feasibility. Conclusion The repair producers formulated on this basis are verified in actual repairs and can satisfy the strength design requirements on the fuel tank structure. The proposed improvements can improve the fatigue quality of aircraft. |
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