Depth Prediction for Earth-Penetrating Projectiles
Depth Prediction for Earth-Penetrating Projectiles
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发表时间：
1969
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通讯作者：
C. Young
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作者：
C. Young
建立了弹丸对多个天然地球目标总侵彻距离的经验公式。这一公式的建立基于对各种目标的大约160次全尺寸渗透试验，包括岩石、石膏、永冻土、冰、沙漠冲积层、粉砂、沙子和饱和粘土。开发中考虑的参数(不包括目标材料)是：(1)弹丸重量从222磅到5750磅，(2)弹丸直径从3.1到18英寸，(3)撞击速度从78到1,077帧/秒，以及(4)11个弹头形状。该方程在20%以内的数据符合91%的数据，在25%以内的数据符合98.5%的数据。给出了实际工程所需的机头性能系数表和土体常数表。
An empirical equation is developed for the prediction of total penetration distance of a projectile in many natural earth targets. Development of this equation was based on approximately 160 full-scale penetration tests into a variety of targets, including rock, gypsite, permafrost, ice, desert alluvium, silt, sand and saturated clay. The parameters considered in the development (other than target materials) were (1) projectile weights from 222 to 5,750 lb, (2) projectile diameters from 3.1 to 18 in., (3) impact velocities from 78 to 1,077 fps, and (4) 11 projectile nose shapes. The equation fits 91% of the data within 20% and fits 98.5% of the data within 25%. The necessary tables of nose-performance coefficients and soil constants are presented for practical engineering usage.