导弹直接侧向力控制外流场研究

External reseach on flowfield of missile with direct lateral force control

关键词:  导弹控制  燃气发生器  数值仿真

Key words:  Missile control  Gas generator  Numerical simulation

摘要:

利用固体燃气发生器作为控制力源对导弹进行侧向力控制、导弹的末端控制和垂直发射导弹的转弯具有重要的作用。具有侧向喷流的直接控制力导弹 ,其外流场极为复杂。利用耗散比拟原理 ,构造出高精度的紧致迎风 TVD格式 ,对侧喷流场进行了二维轴对称数值模拟。数值计算弄清了侧向喷流喷口附近的流场结构 ,研究表明 :对于来流为超声速 ,侧向喷流为声速时 ,侧向喷流的出射角为某一锐角时 ,侧向喷流的侧向作用力达到最大值

Abstract:

As control force source,the solid propellant gas generator was used to exert lateral force for the end control and the turn of vertical launching of missiles. Missiles with lateral jet as control force had complicated flow field. According to the theory of dissipation analogy, compact upwind TVD scheme with high precision was made out.Two dimensional axial symmetry numerical simulation to the lateral jet flow field was conducted.The research show that if the coming stream is supersonic and the lateral jet is sonic, the force of the lateral jet will reach the maximum value when the jet out angle is an acute angle.