前缘断齿型舵面对鸭式布局火箭弹滚转控制气动特性研究

摘要普通鸭式布局火箭弹在跨音速或低超音速区域进行横滚时会出现控制反效的现象，本文的主要工作是探究前缘断齿型舵面对鸭式布局火箭弹气动特性的影响。建立某火箭弹在10°差动角情况下的舵面前缘断齿型与舵面前缘正常型的模型，完成火箭弹外流场建立以及网格划分工作，并对两种模型在马赫数为0。6到2。5以及攻角在0°、2°、4°、6°情况下的流场进行数值模拟，提取压力、速度、密度云图,对比相关计算结果。本文得出了在跨音速以及低超音速区域火箭弹滚转会出现控制反效以及前缘断齿型舵面对这一现象具有缓解的结论。82754

毕业论文关键词鸭式布局控制反效数值模拟

毕业设计说明书外文摘要

Title The study on the aerodynamic characteristics for broken teeth type in the canard’s leading edge of Canard-Controlled Missile on rolling controlling

Abstract The phenomenon of restraining reversal appear in transonic and low supersonic region on general canard-controlled missile 。The main work of this article is exploring aerodynamic characteristic of broken teeth type in the canard’s leading edge of canard-controlled missile on rolling control -ling。The first step is establishing a rocket with broken teeth type in the canard’s leading edge and normal canard on 10°differential angle。And the second step is establishing and meshing the flow filed。 Finally conduct numerical calculation for two models in mach number from 0。6 to 2。5 and angle of attack with 0°、2°、4°、6°,analyze related calculation ,extract pressure、density、velocity contours。In this paper, it concludes that restraining reversal appear in the transonic as well as low supersonic region and the broken teeth type in the canard’s leading edge can ease this phenomenon effectively。

Keywords Canard-Controlled restraining reversal numerical simulation

1 引言 1

1。1 课题背景 1

1。2 国内外发展情况 1

1。3 研究内容 2

1。4 研究方法 2

1。5 本文的工作 3

2 基本理论与数学模型 4

2。1 网格 4

2。2 数学模型 4

3 建模过程 8

3。1 弹体创建 8

3。2 尾翼创建 9

3。3 鸭舵创建 11

3。4 断齿型舵面创建 14

4 网格划分 16

5 Fluent求解 20

5。1 求解器设置前缘断齿型舵面对鸭式布局火箭弹滚转控制气动特性研究:http://www.youerw.com/zidonghua/lunwen_97196.html