Large aircraft fuel mass property has an important impact on the aircraft design and flight safety. Concerning the fact that the existing calculation methods of large aircrafts fuel mass property can not accurately simulate the actual fuel consumption process, which leads to great difference between the results and the reality. An oil - channeling model has been built to describe the fuel consumption laws based on the research of the aircraft fuel system fuel flow rule, and the new fuel mass property calculation method has been given in according to the model. The theoretical analysis and simulative calculation indicate that the oil - channeling model can simulate the oil flow more vividly in the cavities of the oil tank during the oil consumption process, and more accurate calculation results of the fuel mass property have been generated by applying this model, so that the engineering requirements can be better met.%大型飞机的燃油惯性特性对于飞机的设计及飞行安全有着重要的影响.针对现有大型飞机燃油惯性特性计算方法不能准确仿真实际耗油过程,计算结果与实际差异大等问题.为解决上述问题,通过研究飞机燃油系统内燃油的流动规律,构建了流动规律的窜油模型,并给出模型的燃油惯性特性计算方法.经理论分析及仿真计算表明,窜油模型更加真实地仿真了飞机耗油过程中燃油在油箱各腔体之间的流动情况,利用窜油模型进行燃油惯性特性计算,并可以准确预测燃油数量,能更好地满足工程需要.
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