The invention provides an aircraft wing fuel tank covering cap and a structure of a covering cap peripheral area, whichrelate to the technical field of aviation. Theaircraft wing fuel tank covering capcomprises an inner covering cap, an outer covering cap, a sandwich layer, a fixing piece and a fastener, whereinthe inner covering cap is hermetically connected to the wing lower wall plate and the outer covering cap through the sandwich layer; the fastener is arranged in the inner covering cap; the fixing piece penetrates through the fixing hole in the outer covering cap and is connected with the fastener; an intercalation sunken area at a wall plate covering cap of the wing lower wall plate provides a flat mounting area for the inner covering cap, and meanwhile the outer covering cap is ensured to be attached to the wall plate. According to the metal outer covering cap, the shock resistance and lightning protection requirements of the oil tank covering cap are met, the composite material inner covering cap is protected, meanwhile, the weight of the fueltank covering cap assembly can be effectively reduced through the composite material inner covering cap, and galvanic corrosion caused by a single metal alloy covering cap is avoided.
本发明提供了一种飞机机翼油箱口盖及口盖周侧区域的结构,涉及航空技术领域,包括内口盖、外口盖、夹心层、固定件和紧固件;内口盖通过夹心层密封连接于机翼下壁板和外口盖;紧固件设置于内口盖内;固定件穿过外口盖上的固定孔与紧固件连接;机翼下壁板的壁板口盖处插层下陷区为内口盖提供平整安装区域,同时保证外口盖与壁板贴合;本发明金属外口盖保证油箱口盖的抗冲击和闪电防护要求,对复合材料内口盖起到保护作用,同时复合材料内口盖能有效减轻油箱口盖组件重量,避免了因单一金属合金口盖而带来的电偶腐蚀。
Aircraft wing fuel tank covering cap and structure of covering cap peripheral area
一种飞机机翼油箱口盖及口盖周侧区域的结构
2020-11-13
Patent
Elektronische Ressource
Chinesisch
IPC: | B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT |
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