摘要
为了定量分析闪电通过油量指示系统(FQIS)的线缆耦合到燃油箱的能量是否达到安全阙值,建立了FQIS线缆的等效模型,并以4种常见的电流路径对某大型客机进行了大电流注入的建模仿真。仿真分析得到不同路径的舱内外电磁环境和线缆感应电流,并且与最小点燃条件相比较。仿真结果表明,闪电以机头注入,右机翼流出或机尾流出这两种方式注入时,线缆的峰值电流>0.125 A,有可能引起燃油箱产生火花;闪电以左机翼或右机翼注入,机尾流出这两种方式注入时,线缆的峰值电流0.125 A,不可能引燃油箱。
In order to quantitatively analyze whether the lightning energy coupled to the fuel tank by the oil quantity indicating system （FQIS） cable reach the energy security threshold, an equivalent model of FQIS cable is established and a simulation of large current injection were carried out on a large passenger aircraft with four common current paths. The internal and external electromagnetic environment and the current in the cable of four common cur- rent paths is given by the simulation and compared with the minimum ignition condition. The peak of the current through the cable is more than O. 125 A in the way that the current is injected in the nose and out in the tail or out in the wing, which may cause the ignition. The peak of the current through the cable is far less than 0.125 A in the way that the current is injected in the wings and out in the tail, which could not cause the ignition.
出处
《电子科技》
2017年第8期142-145,149,共5页
Electronic Science and Technology
关键词
燃油箱
线缆耦合
最小点燃条件
油量指示系统
fuel tank
cable coupling
minimum ignition condition
oil quantity indicating system
