排序方式: 共有28条查询结果,搜索用时 15 毫秒
1.
2.
3.
文中对速度追踪制导律和弹体追踪制导律的工作原理进行了研究,利用六自由度弹道仿真程序对弹道修正弹两种追踪方式下的末段修正弹道和脱靶量进行了对比计算,研究了两种追踪方式下激光探测器光轴的轨迹及激光探测器空间视场在地面投影区域的变化;弹体追踪方式命中精度虽然较低,但由于工程实现简单、成本低,仍有其工程使用价值. 相似文献
4.
徐劲祥 《北京理工大学学报(英文版)》2008,17(2):127-132
The system composition, the operational principle of terminal correction mortar projectiles (TCMP) and the concept planning design of TCMP are researched in this paper. An overall design and aerodynamic configuration layout for TCMP are made in this paper, and its aerodynamic coefficients are calculated by using computational fluid dynamics (CFD) software. Test results of TCMP simulated ballistic projectiles indicate the designed TCMP can satisfy the interior ballistic demand and has a fine flight stability. The drag coefficients identified from the radar velocity-time data are in accord with the CFD computed results. According to the exposure frequency of the ground laser designator, a four-quadrant impulse correction scheme and a high exposure frequency impulse correction scheme are brought. The latter can calculate the target azimuth angle by counting the times of the facula passing through one quadrant. Simulation results also show that the guidance precision of the velocity pursuit is higher than that of the body pursuit, and the detector axis is less circuitous. Researches on the typical trajectory indicate that the terminal impulse correction can improve the hit precision of TCMP remarkably. 相似文献
5.
6.
7.
在程序升温条件下,用DSC、TG研究了CL-20、CL-20/PbCO3、CL-20/邻苯二甲酸铅(φ-Pb)和CL-20/2,4-二羟基苯甲酸铅(β-Pb)体系的热分解行为.采用6种微分、积分动力学分析方法计算了它们的热分解反应动力学参数.结果表明,CL-20、CL-20/φ-Pb、CL-20/β-Pb的热分解机理函数均为Avrami-Erofeev方程,其微分形式为f(α)=4(1-α)[-ln(1-α)]3/4,分解机理是随机成核和随后生长,n=1/4. 相似文献
8.
9.
10.
徐劲祥 《兵工学报(光化工分册)》2007,30(5):36-41
在程序升温条件下,用DSC、TG研究了CL-20、CL-20/PbCO3、CL—20/邻苯二甲酸铅(φ-Pb)和CL-20/2,4-二羟基苯甲酸铅(β-Pb)体系的热分解行为。采用6种微分、积分动力学分析方法计算了它们的热分解反应动力学参数。结果表明,CL-20、CL-20/φ-Pb、CL-20/β-Pb的热分解机理函数均为Avrami—Erofeev方程,其微分形式为f(a)-4(1-a)[-In(1-a)]^3/4,分解机理是随机成核和随后生长,n=1/4。 相似文献