内埋式武器舱的流动及气动特性分析

Analysis of the flow characteristics and aerodynamic problems in internal weapons bay

探讨了战斗机内埋式武器舱的一些研究进展,对武器舱形状、来流马赫数、边界层厚度、噪声等对武器安全投放的影响进行综合分析,重点讨论了武器舱几何形状对流动特性的影响;基于N-S方程,采用数值模拟方法,分析了几种不同长深比二维武器舱的流动特性,以及三维武器舱锯齿舱门对气动特性的影响;探讨了噪声特性及噪声抑制技术,并对武器投放中涉及的隐身性能进行了分析讨论。

Firstly,summarize the study situation of internal aircraft weapons bay.Then discuss the influence of weapons bay configuration,upstream Mach number,boundary layer and noise on the safety of the aircraft when the weapons are separated.It is fully analyzed the relationship between configuration and flow characteristics.Then based on the Navier-Stokes equations,numerically simulate the flow characteristics of a two-dimensional internal weapons bay with different length to depth ratio,and aerodynamic characteristics of a three-dimensional internal weapons bay with a bay door with jagged edges.Additionally discuss the noise suppression technique and related stealth performance.