基于Flowmaster飞机重力供油系统计算研究
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摘要
文中基于Flowmaster一维流体计算仿真软件,从实际重力供油过程出发,建立了贴合真实重力供油过程的多油箱瞬态重力供油计算模型,针对某型飞机燃油系统,计算得到了不同工况下,重力供油可持续时间及各支路的流量和各节点压力。最终确定飞机允许的飞行高度、发动机工作状态,以及其他可能的使用限制,为飞机燃油系统整体设计优化提供了可行方案。
When flying in the air,any aircraft may have engine fuel supply pipeline failure. Gravity fuel supply is an emergency measure to supply fuel to the engine in this case. In this paper,based on Flowmaster one-dimensional fluid simulation software,starting from the actual gravity fuel supply process,a multi-tank transient gravity fuel supply calculation model is established,which fits the real gravity fuel supply process. For a certain aircraft fuel system,the sustainability time of gravity fuel supply under different conditions,the flowrate of each branch and the pressure of each node are calculated. Finally,the allowable flight altitude,engine working status and other possible use restrictions are determined,which provides a feasible scheme for the overall design optimization of aircraft fuel system.
When flying in the air,any aircraft may have engine fuel supply pipeline failure. Gravity fuel supply is an emergency measure to supply fuel to the engine in this case. In this paper,based on Flowmaster one-dimensional fluid simulation software,starting from the actual gravity fuel supply process,a multi-tank transient gravity fuel supply calculation model is established,which fits the real gravity fuel supply process. For a certain aircraft fuel system,the sustainability time of gravity fuel supply under different conditions,the flowrate of each branch and the pressure of each node are calculated. Finally,the allowable flight altitude,engine working status and other possible use restrictions are determined,which provides a feasible scheme for the overall design optimization of aircraft fuel system.
引文
[1]曹建华,白冰如.飞机构造[M].北京:国防工业出版社,2014.
[2]吕美茜.单发飞机重力供油的试飞方法[J].飞行试验,1997,13(3):45-48.
[3]刘振侠,吕亚国,等.飞机重力供油计算研究[J].西北工业大学学报,2006,24(2):241-243.
[2]吕美茜.单发飞机重力供油的试飞方法[J].飞行试验,1997,13(3):45-48.
[3]刘振侠,吕亚国,等.飞机重力供油计算研究[J].西北工业大学学报,2006,24(2):241-243.