机载吊舱端部天线结构件抗振强度研究
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摘要
机载吊舱使用环境恶劣,尤其在飞机飞行过程中,复杂的振动环境对舱体及吊舱内电子设备结构强度都有严格的要求。由于吊舱通常很长,位于吊舱两端的结构件距离挂点位置较远,将承受放大3~6倍的振动载荷。针对某机载吊舱端部天线组件内波导同轴转换结构的断裂问题,进行耐久振动仿真与试验,得出波导同轴转换结构无法承受放大量级的耐久振动,发生疲劳断裂是必然的。采用局部加固断裂结构外围强度的方式,改进整体天线结构,并再次进行振动仿真与试验,最终验证满足设计要求。
Airborne pods are used in harsh environment,especially during the aeroplane flying process,the complex vibration environment puts forward strict requirements for the structure strength of pod and the electronic equipments in the pod.Usually,the pod is very long,so the structure parts which is far away from the hanging position dues 3~6 times of vibration load.Aiming at the breaking problem of wave-guide coaxial conversion structure in antenna module at top of a certain airborne pod,this paper performs the durable vibration simulation and experiment,educes that the wave-guide coaxial conversion structure can't endure the amplified durable vibration,the fatigue fracture should occur inevitably,adopts the mode reinforcing the peripheral strength of fracture structure partially to improve the whole antenna structure,and performs the vibration simulation and experiment again,finally validates that it can satisfy the design requirements.
Airborne pods are used in harsh environment,especially during the aeroplane flying process,the complex vibration environment puts forward strict requirements for the structure strength of pod and the electronic equipments in the pod.Usually,the pod is very long,so the structure parts which is far away from the hanging position dues 3~6 times of vibration load.Aiming at the breaking problem of wave-guide coaxial conversion structure in antenna module at top of a certain airborne pod,this paper performs the durable vibration simulation and experiment,educes that the wave-guide coaxial conversion structure can't endure the amplified durable vibration,the fatigue fracture should occur inevitably,adopts the mode reinforcing the peripheral strength of fracture structure partially to improve the whole antenna structure,and performs the vibration simulation and experiment again,finally validates that it can satisfy the design requirements.
引文
[1]甘至宏.光电吊舱内框架减振系统设计[J].光学精密工程,2010,18(9):2036-2043.
[2]陆阳,肖秋枫,张建强.通用电子对抗干扰吊舱关键技术研究[J].中国电子科学院学报,2008(3):451-454.
[3]庄昕宇,陈兆兵.圆柱形大尺寸机载吊舱技术分析[J].光机电信息,2011,28(4):32-38.
[4]刘家燕,程志峰,王平.机载光电吊舱橡胶减振器的设计与应用[J].中国机械工程,2014,25(10):1308-1312.
[2]陆阳,肖秋枫,张建强.通用电子对抗干扰吊舱关键技术研究[J].中国电子科学院学报,2008(3):451-454.
[3]庄昕宇,陈兆兵.圆柱形大尺寸机载吊舱技术分析[J].光机电信息,2011,28(4):32-38.
[4]刘家燕,程志峰,王平.机载光电吊舱橡胶减振器的设计与应用[J].中国机械工程,2014,25(10):1308-1312.