飞机燃油测量系统误差与精度分析

Aircraft Fuel Gauging System Error and Accuracy Analysis

燃油测量系统是燃油系统的重要子系统之一,其精度、可靠性和维护性对飞机整体性能都有很大的影响。实时、精确地测量油箱内的剩余油量对于保证飞机安全飞行,实现重心控制、燃油管理、耗油顺序优化等功能有重要意义。同时,对于民用飞机而言,燃油测量系统精度的提高将直接影响飞机的经济性。从常见的燃油测量系统误差入手,分析了各个因素对测量精度的影响,其中重点针对密度测量对精度的影响做出了分析,并得出在满足某精度要求的前提下,油箱内传感器的最优组合方案。

Fuel gauging system is an important subsystem of fuel system, whose accuracy, reliability and maintainability usually have great effect on the performance and capability of the entire aircraft. How to measure the fuel quantity on board in real time and accurately is very important to ensure safety flight and CG management, fuel management, optimizing fuel consuming sequence. Besides, for civil aircraft, improving the ac- curacy of fuel gauging system will affect the economic of aircraft directly. It is reported that improving the gauging accuracy by 0. 5% will result in accommodating several passengers for more. This article analyzed the each kind of error＇s effects on accuracy based on the common error of fuel gauging system, and it placed emphasis On the fuel density measurement＇s influence. It formed the optimal probe combination solution ac- cording to the accuracy requirements.