飞机燃油系统先进技术及流体交联解耦研究  

Research on advanced technology of aircraft fuel system and fluid crosslinking decoupling

作　　者：万长树 彭金银 WAN Changshu;PENG Jinyin(Zhaoqing General Aviation Academy of Guangdong Institute of Applied Science and Technology,Zhaoqing 526060 China;Hainan Vocational University of Science and Technology,Haikou 571126 China)

机构地区：[1]肇庆市广应科通用航空研究院,肇庆526060 [2]海南科技职业大学,海口571126

出　　处：《民用飞机设计与研究》2020年第4期104-107,共4页Civil Aircraft Design & Research

摘　　要：文中主述飞机燃油系统由液压传动方式供输油取代现有的电动燃油泵供输油。对管内流体相互交联问题,提出了解决方法。发动机的状态不同,通过子程序能寻找任意位置涡流泵的压力P与流量Q的函数关系。新型燃油系统优点有:重量方面,采用数百克的涡流泵、引射泵取代约10 kg的电动燃油泵,飞机越大,燃油系统的重量减轻就越多;效能方面,现有燃油系统用电量占飞机用电量30%以上,新型燃油系统用电量约占飞机用电量的4.5%。求解方程时,先梳理方程式,尽量使矩阵主对角线元素占优;引入松驰因子w_n,利于方程收敛;误差控制常数尽可能小。本课题以某歼击机燃油系统为模型,对其进行分析研究,经燃油系统地面模拟试验验证,研究获得成功。In this paper,the aircraft fuel system is supplied by hydraulic drive instead of the existing electric fuel pump.The solution to the problem of crosslinking problem of fluid in pipe was proposed.The function relationship between pressure P and flow Q of the vortex pump at any position can be found by subroutine according to different engine states.There are a few advantages of the new fuel system.First of all,vortex pumps and injection pumps with only hundreds of grams are used to replace electric fuel pumps of about ten kilograms,which saves weight.It can be seen that the larger the aircraft,the more weight of the fuel system is reduced.Second,the electricity consumption of present fuel system accounts for more than 30%of the electricity consumption of the aircraft,while the new fuel system’s electricity consumption accounts for only about 4.5%of the whole aircraft,with much higher efficiency.During the process of solving a set of equations,the first step is to adjust the equations to make the main diagonal elements of a matrix dominant,and the second is to introduce relaxation factor w_n,to help the convergence of the equations,and then let the number of error constant be as small as possible.This paper takes the fuel system of a fighter as model to analyze and study.The ground simulation test of the fuel system shows that the research is successful.

关 键 词：飞机燃油系统 供输油 液压传动 交联 寻找压力 

分 类 号：V228.1[航空宇航科学与技术—飞行器设计]