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现代飞机广泛采用整体油箱结构,以充分利用机身、机翼甚至尾翼等结构内部空间贮放燃油,尽可能延长飞机航程。为保证油箱不渗油漏油,除所有构件必须严密配合外,还必须在所有装配面和缝隙涂敷密封材料,以确保结构绝对密封。此外,飞机客舱和驾驶舱都要求保持气密,水上飞机更要求整个机身保持水密,都需要使用密封材料。一架大型飞机使用的密封材料,有时竟达数百公斤。
Modern aircraft widely used in the overall tank structure, in order to make full use of the fuselage, wings and even the tail of the structure of the internal space for storage of fuel, as far as possible to extend the aircraft’s range. In order to ensure that the fuel tank does not leak oil, all the components must be closely fitted, and all the assembly surfaces and gaps must be coated with sealing material to ensure the structure is absolutely sealed. In addition, the aircraft cabin and cockpit are required to maintain airtight, seaplane requires the entire body to maintain watertight, require the use of sealing material. Sealing materials used on a large aircraft, sometimes up to hundreds of kilograms.