V形尾翼无人机喷流对纵向气动影响数值模拟  

Numerical Simulation on Lengthways Aerodynamic Characteristics of UAV with Vee Tail under Jet Flow Influence

作　　者：马建[1] 杨青真[1] 孙志强[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《科学技术与工程》2009年第10期2674-2679,共6页Science Technology and Engineering

摘　　要：研究了类似全球鹰的V形尾翼无人机与发动机喷流之间的干扰。采用有限体积法,求解全三维N-S方程,对进气道和喷口的内流场与全机外流场进行一体化数值模拟,给出了有、无喷流情况下在不同高度、马赫数、迎角以及相应发动机工作状态下的纵向气动特性,分析了喷流的干扰效应对飞机外流场造成的影响,从计算结果看,发动机喷流对飞机纵向气动力特性和力矩特性都有一定量的影响。这些可以作为V型尾翼无人机和发动机气动布局设计的参考。The jet flow＇ s influence is focused on aerodynamic performance of the vee tail and whole UAV which has a configuration of GLOBAL HAWK. Three-dimensional Navier-Stokes equations were solved by finite volume method. The interaction between Vee tail and engine＇ s jet was simulated numerically and the aerodynamic characteristics of the UAV at different altitude and Mach number were investigated on relevant state of the engine. The resuits which were compared quantificationally between quiet UAV and jetting UAV showed that the engine＇ s jetflow have an certain impact on the UAV＇ s lengthways aerodynamic characteristics, and the result can be provided as reference for aerodynamic layout design and analysis of Vee tail and engine.

关 键 词：气动特性 V形尾翼 全机内外流模拟 喷流干扰 无人机 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]