Fe - simulation research on the rcs of a tank barbette 坦克炮塔基体雷达隐身特性有限元仿真研究
2.
Turret side armor and barbette armor would usually be hit at a more oblique angle , usually circa 30 - 45 degrees or more , though the very center of the barbette could be hit at near right angles 虽然炮座装甲正中区域有可能被几乎垂直击中，但通常炮塔的侧面和炮座装甲被击中时的角度会较倾斜，约30 45度或以上。
3.
This paper is based on " the remodeled item of the 122mm automatic barbette servo system " . it introduced the controlled project of brushless direct current motor realized by dsp at first . on the base of analyzing and studying the driving wave of the brushless direct current motor thoroughly and fully , it carried on the servo system ' s simulink and presented the concrete software and hardware ' s devise of the whole system in the end 本论文的撰写是以“ 122mm自行迫榴炮伺服控制系统的改型项目”为基础，首先介绍了dsp实现无刷直流电机的控制方案，在深入、系统的分析和研究了无刷直流电机驱动波形的基础上，然后进行了伺服控制系统的仿真，最后给出了伺服控制系统具体的软硬件设计。
