侵彻火箭弹引信关键技术研究

【作者】 王东晓；

【导师】 马少杰；

【作者基本信息】 南京理工大学 ， 机械电子工程， 2011， 硕士

【摘要】 火箭弹正呈现出射程远程化、打击精确化、大威力及多用途化、动力推进装置多样化的发展趋势。二次世界大战以来,世界各国纷纷将高价值目标转移到地下的坚固掩体中,为了有效摧毁这一类目标,侵彻战斗部及其引信的研制成为热点。引信技术是侵彻火箭弹发展中存在的一个关键性难题,同时,引信技术对发挥最佳爆炸效果至关重要。针对火箭弹在飞行主动段的加速度作用时间长,可作为远距离解保的环境激励,采用了无返回力矩钟表机构作为侵彻火箭弹的引信解保机构。基于CAD技术和多体系统动力学理论对该钟表机构进行了建模与仿真,研究和分析了其可靠性与安全性,最终证明设计出的钟表机构符合战术要求。基于C8051单片机设计了侵彻火箭弹的控制电路,可以将火箭弹发射及侵彻过程中的加速度转换为数字信号,使得火箭弹能够根据侵彻目标时的过载特性来计算所穿透的靶板和空间层数,并选择最佳起爆时间。通过侵彻试验,证明了电路在侵彻过程中工作正常。在火箭弹侵彻多目标的背景下,为了识别火箭弹在不同速度下,侵彻不同材料靶板的过载信号。运用ANSYS/LS—DYNA对火箭弹侵彻混凝土靶板进行了过载特性的研究,内容包括了弹体的不同侵彻速度、混凝土靶板厚度与数量和不同材料的弹体对侵彻过载的影响。设计的延期解保机构与控制电路为同类型侵彻火箭弹引信关键技术研究提供了参考。更多还原

【Abstract】 Rocket bomb is showing some new development trend, such as, rang remote, combat precision, high power, multipurpose and diversification of power propulsion system. Since World WarⅡ, many countries have shifted high-value targets in the firmness underground blindage. In order to destroy these targets, the development of penetrating warhead and fuze become a hot pot. Fuze technology is the key of technical problems in the development of penetration rocket bomb, meanwhile, fuze technology to achieve the best explosion effect is very important.Rocket in flight active segment produce acceleration with relatively long time, which can be used as an environmental incentives for long-range arming. The safety device of penetration rocket is adopted as clock mechanism with runaway escapement. Based on CAD technology and Multi-body Dynamics theory, the clock mechanism has carried on the modeling and simulation. Studied and analyzed its reliability and safety, proved its accord with tactic requirements.Design the overload signal into electrical signal circuit. Based on SCM C8051, design penetration rocket bomb control circuit, witch makes the rockets can according to overload signal to calculate the layers of penetrating floor and spatial, and choose the best initiation time. Through penetration testing, prove the circuit can working in the penetration process.On the background of rocket penetrating multiple objectives, use ANSYS/LS—YNA to identify the overload characteristics between rockets and concrete. Research the process of projectile penetrating concrete targets under various conditions.This clock mechanism with runaway escapement and circuit provide a reference for other same type of penetration rocket engineering.更多还原