X型布局导弹冲压发动机攻角特性数值研究  

The Numerical Study of the Effect of the Angle of Attack to the Missile Ramjet in the "X" Type Configuration

作　　者：白鹏[1] 朱守梅 李稳绪 孟宇鹏 周伟江[1] 马汉东[1] 

机构地区：[1]北京空气动力研究所,北京100074 [2]航天科技集团第31研究所,北京100074

出　　处：《宇航学报》2005年第1期99-103,共5页Journal of Astronautics

摘　　要：冲压发动机是导弹设计者关心的重要问题之一。在实际飞行中为了有效的跟踪和攻击目标,必然要面对带攻角的情况。为了更好的模拟弹体、进气道和掺混段一体化影响,本文采用二阶迎风隐式TVD格式,内外流分区耦合求解可压缩N S方程,数值模拟了掺混段出口压力与来流压力比为P P∞=4 2超临界状态下,二元方形截面"X"型布局一体化通气模型复杂流场。计算了不同攻角对冲压发动机性能和流场所产生的影响,并对结果进行了比较和分析。The ramjet is one of the important questions, which the missile designers consider. In order to track and attack the aim effectively, the ramjet must meet the different attack-angles. In order to simulate the integrated effect of the complex inner and outer flow around the missile body, inlet and the firebox, the second order upwind implicit TVD schemes were used to solve the compressible N-S equations. The computational condition is Ma=2.2, P/P_∞= 4.2, under the super critical condition. And the configuration of the inlets is 'X' type with square section. The different attack-angles are calculated, and the effects of the attack-angles to the character and the flowfields of the ramjet were compared and analyzed in this paper.

关 键 词：内外流场 一体化布局 冲压发动机 数值模拟 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]