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本报告介绍了一种翅果型的减速装置,当子弹在战场上空垂直下落时,该装置使子弹作月型运动,对装甲目标进行扫描.这是从APDC探索发展项目中引出来的,单翼式减速装置,它由3oz/yd2,端部带有重物的尼龙织物组成.利用有翼尖重物的弹性翼产生一月形扫描运动的概念,是受到翅果(椰风)飞行中的启发而得来的.飞行中不同外形的子弹在垂直风洞中的气动试验得到了无量纲的转速比Pd/2v为0.11,阻力系数为3.21(以弹径为基础),提出了模拟以对称旋转体为模型的月型运动的6个自由度计算程序,并推出评估无法测量的气动力系数.
This report presents a sagittal-type decelerator that, when the bullet falls vertically over the battlefield, makes the bullet move moonly to scan the armor target. This is derived from the APDC Discovery Development Project, a single-wing decelerator consisting of a 3oz / yd2, nylon fabric with heavyweight ends. The concept of a lunar scanning motion using elastic wings with wingtips is inspired by the flying samara (coconut) flight. The aerodynamic tests of bullets of different shapes in vertical wind tunnels obtained a non-dimensional speed ratio Pd / 2v of 0.11 and a drag coefficient of 3.21 (based on the spring-loaded diameter) Six-degree-of-freedom computational procedures for modeling lunar movement and the introduction of an unmeasurable aerodynamic coefficient.