提高低速、低旋火箭增程弹密集度分析及措施

APALYSIS AND TREATMENT FOR IMPROVING THE DISPERSION OF ROCKET—BOOST PROJECTILE WITH LOW VELOCITY、LOW ROTATION

40Ⅱ型反坦克火箭增程弹(Ⅱ型弹)战斗部威力比40型反坦克火箭弹(40型弹)有较大的突破.Ⅱ型弹弹重增加较多,炮口初速、炮口转速明显下降.炮口初速与和转速的降低.是影响Ⅱ型弹密集度的主要因素.由于Ⅱ型弹仍采用40发射筒,火炮条件受到制约,从提高初速的途径来提高密集度是行不通的.为此除了新设计弹尾涡轮来提高膛内转速外,还根据弹种的特点做了全弹的推力中心,质心、阻心三点之间的位置距离和确定增程发动机点火箭的合理转速等工作.本文是以上述措施提高低速、低旋火箭弹密集度而写的,同时将试验数据、计算结果与同类型弹种的主要参数进行比较分析,确已证明是提高密集度的有效措施,它对近程反坦克火箭弹总体方案设计的参数确定,提供了一定的理论分析依据。

The main factors which influence the dispersion of 40mm--Ⅱ projectile are low initial velocity, low rotation velocity and the unsitable distance between the drag center and the gravitation center. The present paper discusses the treatment method of ajusting the three factors for improving the dispersion as well as the experimental results.