飞机电气线路互联系统海洋环境适应性研究

Marine Climate Environmental adaptability of Aircraft Electrical Wiring Interconnection System

以飞机典型电气线路互联系统(ElectricalWiringInterconnectionSystem,EWIS)故障件和线缆及微动开关的南海环境暴晒试验结果为依据,研究了海洋环境下EWIS的腐蚀故障规律、腐蚀类型和形成原因、及电气性能变化规律等。结果表明,海洋环境下EWIS腐蚀失效形式多样,易导致间歇式故障频发,电气性能及屏蔽效能下降等。从适海性的角度提出了应从选材、设计、使用维护和故障数据分析利用等方面来提高EWIS的海洋环境适应性。

Based on fault results of the Electrical Wiring Interconnection System (EWIS) and the South China Sea environmental exposure test results of the aircraft's typical Electrical Wiring Interconnection System (EWIS), the corrosion failure law, corrosion types and causes, and electrical performance variation law of EWIS in marine environment were studied. The results show that the failure modes of EWIS corrosion in marine environment were various, which can easily lead to frequent intermittent faults and decrease of electrical performance and shielding effectiveness. From the point of view of seaworthiness, it is proposed to improve the marine environmental adaptability of EWIS from material selection, design, operation and maintenance, and analysis and utilization of fault data.