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民用飞机的发动机转子非包容性失效给飞机的安全运行带来巨大的风险,为了将这种转子非包容性失效可能带来的危害降至最小,需要合理的评估碎片的危害水平,以及采取合理的安全预防措施。尽管在FAA(Federal Aviation Administration)用于评估碎片危害水平的UEDDAM(Uncontained Engine Debris Damage Analysis Model)软件工具中采用了加强防护设计以减少碎片危害,但是没有对具体的分析流程和碎片能量衰减的计算模型进行说明。为此,在现有的碎片危害分析方法的基础上,考虑到碎片在侵彻过程中会有能量衰减,分析了降低碎片危害的三种安全预防措施,通过对比确定了加强防护设计对于降低碎片危害的重要意义及其分析的流程。通过对飞机结构中关键区域定义的理解,明确了在飞机的不同部位需要采取不同的加强防护设计,并详细介绍了整体加强防护设计和局部加强防护设计的流程。
The non-inclusive failure of the engine rotor of civil aircraft poses a great risk to the safe operation of the aircraft. In order to minimize the potential harm caused by the non-inclusive failure of such a rotor, it is necessary to properly assess the hazard level of the debris and to adopt a reasonable Safety precautions. Although enhanced protection designs have been used to reduce the risk of debris in the Federal Aviation Administration (UA) software tool called the Uncontained Engine Debris Damage Analysis Model (UEDDAM) used by the Federal Aviation Administration to assess debris hazard levels, no detailed analysis of the flow and calculation of debris energy attenuation Model to explain. Therefore, on the basis of the existing analysis methods of debris hazards, taking into account the energy attenuation of debris during the penetration process, three safety precautions are analyzed to reduce the hazards of debris. By contrast, it is determined that strengthening the protection design can reduce the debris The significance of harm and the process of its analysis. Through the understanding of the definition of key areas in the aircraft structure, it is clear that different strengthening protection designs need to be taken in different parts of the aircraft, and the whole process of strengthening the protection design and partially strengthening the protection design is introduced in detail.