民用飞机短舱防火试验件设计及验证

Design and Verification of Fireproof Test Specimens for Civil Aircraft Nacelle

针对短舱火区典型结构设计了防火试验件,通过试验比较了两种复合材料及防火涂层的防火性能,测试了防火橡胶型材进行密封防火的可行性。试验结果表明,相比使用防火涂层,苯并噁嗪树脂碳纤维织物和普通树脂碳纤维织物材料本身无须涂覆防火涂层,也能满足防火要求,但前者防火性能更佳;采用防火橡胶型材进行密封防火是可行的,为发动机短舱结构的防火设计提供参考并可实际应用。

This paper designed test specimens for the typical structure in the fire area of the nacelle, compared two different composite materials with the fireproof coating, and test the feasibility of sealing fireproof of the rubber profiles. The results show, compared with the fireproof coating, the benzoxazine resin/carbon fiber fabric and general resin/ cabron fiber fabric met the fireproof requirements without fireproof coating, but the former performs better. It is feasible to use the rubber profile for the sealing fireproof. It provides a reference for the fireproof design of airplanes engine nacelles, which could be made a practical application.