民用飞机油箱口盖抗低能量发动机碎片冲击适航验证技术研究

目的 依据适航条款CCAR25.963-e-1的要求，对民用飞机油箱口盖抗低能量发动机碎片冲击能力的适航符合性进行研究。方法 根据适航验证工作需要，制定了飞机油箱口盖抗低能量发动机碎片冲击的适航符合性验证流程，明确了适航取证需要考虑的油箱口盖范围和撞击角度，建立了发动机碎片有限元模型，开展了油箱口盖抗发动机碎片冲击的仿真分析与试验室试验。结果 仿真结果与试验结果对比分析后，二者基本一致，仿真分析基本能预测试验结果。结论 该仿真分析方法可供飞机口盖抗碎片冲击设计使用，该油箱口盖抗低能量碎片冲击适航符合性验证流程可供相似飞机适航取证参考使用。

Airworthiness Certification Technology on Civil Aircraft Fuel Tank Cover Withstanding the Engine Debris

The work aims to study the performance of civil aircraft fuel tank cover on withstanding the engine debris according to the requirement of airworthiness standards CCAR25.963-e-1. The airworthiness certification process of fuel tank cover withstanding engine debris was developed according to the airworthiness certification requirements. The impact area and angles of fuel tank cover for airworthiness certification were defined. The finite element model of engine debris was established. The simulation analysis and laboratory test were carried out to the capability of the fuel tank cover on withstanding engine debris. After analyzed comparatively, the simulation results and test results were approximately consistent and the simulation analysis could basically predict the test results. The simulation method can be used to design the fuel tank cover withstanding debris. The airworthiness certification process of fuel tank cover withstanding debris can be referred for similar aircraft airworthiness certification.