航空科学技术
航空科學技術
항공과학기술
AERONAUTICAL SCIENCE AND TECHNOLOGY
2014年
11期
23-26
,共4页
民用飞机%电气线路互联系统%燃油箱%点火源防护
民用飛機%電氣線路互聯繫統%燃油箱%點火源防護
민용비궤%전기선로호련계통%연유상%점화원방호
civil aircraft%EWIS%fuel tank%ignition source prevention
对民用飞机燃油箱常见的电火花和电弧、细丝加热、摩擦火花和热表面点燃四种点火源进行了介绍，分析了与电缆敷设相关的点火源，总结了可能降低燃油箱安全性的燃油泵布线、燃油量指示系统布线和电气馈电线布线的设计特征，提出了燃油箱布线的基本原则。分别从线路敷设、线路隔离、瞬态抑制装置的使用等方面提出了最小化点火源的可接受布线设计方法，为飞机燃油箱的布线设计和安全性分析提供了指导。
對民用飛機燃油箱常見的電火花和電弧、細絲加熱、摩抆火花和熱錶麵點燃四種點火源進行瞭介紹，分析瞭與電纜敷設相關的點火源，總結瞭可能降低燃油箱安全性的燃油泵佈線、燃油量指示繫統佈線和電氣饋電線佈線的設計特徵，提齣瞭燃油箱佈線的基本原則。分彆從線路敷設、線路隔離、瞬態抑製裝置的使用等方麵提齣瞭最小化點火源的可接受佈線設計方法，為飛機燃油箱的佈線設計和安全性分析提供瞭指導。
대민용비궤연유상상견적전화화화전호、세사가열、마찰화화화열표면점연사충점화원진행료개소，분석료여전람부설상관적점화원，총결료가능강저연유상안전성적연유빙포선、연유량지시계통포선화전기궤전선포선적설계특정，제출료연유상포선적기본원칙。분별종선로부설、선로격리、순태억제장치적사용등방면제출료최소화점화원적가접수포선설계방법，위비궤연유상적포선설계화안전성분석제공료지도。
The four ignition sources, which are electrical arcs and sparks, iflament heating, friction sparks, and hot surface ignition or auto-ignition, of civil aircraft fuel tank were introduced. The ignition sources related to EWIS were analyzed. The design features of EWIS resulting in degradation of fuel tank safety, which are fuel pump wiring, intrinsical y safe wiring and higher energy wiring, were summarized. Basic rules of EWIS routing were raised. The accepted EWIS design practices for minimizing ignition sources were provided in the aspect of EWIS routing, EWIS separation and utilization of transient suppressor can give suggestions for EWIS design in fuel tank.
