民用飞机燃油箱系统热模型分析研究

飞机燃油箱系统热分析是飞机燃油系统设计和适航取证的关键技术之一。首先对燃油箱热模型分析方法进行了阐明,然后在典型热天环境中(地面温度为327K)对一种典型民用飞机燃油箱结构的热参数进行了工程计算研究。研究表明,外翼油箱、机身油箱以及集油箱内燃油温度分布不均匀;各油箱燃油温度在地面状态均高于巡航状态;燃油的最高温度时刻出现在地面终了状态,而且最高点位置出现在集油箱内。研究结果既可以指导飞机燃油箱设计,也可以为飞机燃油系统的适航取证提供一定技术支持。

Research on the Thermal Model Analysis of Civil Aircraft Fuel Tank System

Thermal model analysis of the fuel tank is a key technology of the aircraft fuel system design and airworthiness certification. In this article,the fuel tank thermal model analysis method was clarified firstly,then investigated the thermal parameters of a typical civil aircraft fuel tank structure by engineering calculations in a typical hot day environment (ground temperature is 327K),studies show that the fuel temperature in the wing tank,fuselage tank and collector tank are varied. The temperature of the ground state is higher than the cruise. The maximum temperature reached in the end of ground state,and the highest point appeared in the collector tank. The results can both guide the design of aircraft fuel tanks and provide some technical support for airworthiness.