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激光引信具有抗无线电干扰能力强,测距精度高、波束窄,引战配合效率高等突出优点,成为继无线电引信之后的重要引信种类。首先分析了超音速火箭弹激光引信的结构,重点研究了在超音速飞行条件下火箭弹激光引信气动热特性,采用有限元方法对火箭弹弹头引信建立了模型并对其气动热特性进行了仿真,在此基础上得出了重要结论,在激光引信设计中,不仅要考虑光学窗口的透光性能,还应高度重视其热变化特性对强度带来的影响。
Laser fuze with anti-radio interference ability, ranging accuracy, narrow beam, leading war with the outstanding advantages of high efficiency, becoming the second category after the fuse fuses important fuze. Firstly, the structure of supersonic rocket laser fuze is analyzed. The aerodynamic thermal characteristics of the laser fuze are studied under the condition of supersonic flight. The aerodynamic thermal characteristics of the rocket missile fuze are modeled by the finite element method. On the basis of this, an important conclusion is drawn. In the design of laser fuze, not only the light transmission performance of the optical window should be considered, but also the effect of its thermal variation on the intensity should be paid great attention to.