某型飞机蓄压油箱修补延寿研究与应用  

An Applied Study of Repairing an Accumulator Fuel Tank for Prolonged Serivice Life

作　　者：王克然[1] 杨广双[1] 李树柏[2] 袁忠诚[2] 

机构地区：[1]中国人民解放军驻沈阳飞机工业(集团)有限公司军事代表室,沈阳110034 [2]沈阳飞机工业(集团)有限公司,沈阳110034

出　　处：《飞机设计》2005年第1期20-25,共6页Aircraft Design

摘　　要：针对某型飞机蓄压油箱气腔管嘴处焊接部位易产生疲劳裂纹的问题, 对超期蓄压油箱采用局部修补方案, 以便延缓裂纹的产生和扩展, 达到延长使用寿命的目的。通过各种方案论证, 选择了用环氧树脂/玻璃布复合材料胶接修补方法, 并进行了工艺方法研究, 论述了该方法对外场飞机蓄压油箱修补的可行性;通过进行模拟件对比疲劳试验及局部修补后蓄压油箱的高、低温贮存、振动、爆破及气密性等验证试验, 论述了该修补方法可延长超期蓄压油箱的使用寿命, 提高安全性。A repair process study has been conducted to delay the occurrence and propagation of fatigue cracks which are likely to exist in the welded area around the air chamber union on the wall of accumulator fuel tank in a certain-type aircraft to prolong the service life of the tank. A local repair scheme using glass fabric reinforced epoxy resin composite patch bonded to the inside wall of the tank is discussed. Results of specimen comparison fatigue tests and performance demonstration tests, including high/low temperature storage, vibration, pressurization and airtightness tests, are given. The results indicate that the repair process can provide a prolonged service life and improved safety of operation for the accumulator tank.

关 键 词：油箱 飞机 应用 延寿 延长使用寿命 修补方法 疲劳裂纹 焊接部位 修补方案 方案论证 复合材料 环氧树脂 工艺方法 局部修补 疲劳试验 低温贮存 验证试验 玻璃布 气密性 安全性 

分 类 号：TQ053.6[化学工程] TM403.9[电气工程—电器]