摘要
采用数值手段研究级间热分离过程中喷流对二子级流场的干扰特性,并与风洞试验结果进行比较分析。研究结果表明:喷流使二子级尾段边界层发生分离,分离区内压力升高;有攻角后,背风分离区范围增大,分离点前移,迎风面规律与之相反;基于不同的质心位置,喷流干扰对二子级纵向稳定性有不同程度的改变,对二子级的飞行起控有较大影响。
The characteristics of the jet interaction on the second stage＇s flow conditions during stage-separation,are investigated with numerical method,comparing with the wind tunnel experiment results.The jet interaction results in boundary layer separation on the second stage tail and pressure increase at the separation region.The angle of attack enlarges the separation region and moves the separation point forward on the leeward,which is of the opposite status on the windward.Based on different positions of the center of mass,jet interaction has different influences on the upper stage longitudinal stability,which has larger impacts on the flight attitude control
出处
《导弹与航天运载技术》
北大核心
2011年第3期20-24,共5页
Missiles and Space Vehicles
关键词
级间分离
喷流干扰
气动特性
Stage separation
Jet interaction
Aerodynamic characteristics
