水陆两栖飞机涉水结构修理级别分析研究

修理级别分析（LORA）是水陆两栖飞机涉水结构维修工程分析的一个重要内容。国内外修理级别分析主要针对民用飞机、舰载机、车辆、船舶等，有关水陆两栖飞机涉水结构修理级别分析的研究较少，基于此，针对水陆两栖飞机涉水结构 LORA 的流程和模型进行研究。建立涉水结构三级修理模式，提出涉水结构的 LORA 流程；建立适用于涉水结构三级修理的经济性 LORA（ELORA）模型，给出 ELORA 需要考虑的成本因素；以水陆两栖飞机涉水舱门上的接近开关为例进行经济性修理级别分析。结果表明：待分析产品应在中继级进行修理，与工程实际中的修理级别一致，本文 ELORA 模型应用于涉水结构具有可行性。

Level of Repair Analysis for Amphibious Aircraft Wading Structure

Level of repair analysis (LORA) is an important part of maintenance engineering analysis for amphibious aircraft wading structures. There are many researches mainly focusing on LORA of civil aircraft, shipboard aircraft, vehicles, ships and so on in the domestic and overseas, while researches on LORA of amphibious aircraft wading structure are few. Based on this, this paper studies the process and method of LORA for the wading structure of amphibious aircraft. In this paper, a three-level repair model of the wading structure is established. The LORA process of the wading structure is proposed. An economical LORA (ELORA) model for three-level repair of wading structures is established, and the cost factors to be considered for ELORA are given. Finally, the approach switch on the wading cabin door of an amphibious aircraft is taken as an example to carry out ELOR, the calculation results demonstrate the engineering suitability of the proposed method in LORA.