公开(公告)号：US4765566A

公开(公告)日：1988-08-23

申请号：US21827

申请日：1987-03-04

申请人： Jan-Olov Fixell ,  Thomas Gustafsson ,  Gosta Hogberg ,  Stig Engfors ,  Kjell Albrektsson ,  Arne Franzen

发明人： Jan-Olov Fixell ,  Thomas Gustafsson ,  Gosta Hogberg ,  Stig Engfors ,  Kjell Albrektsson ,  Arne Franzen

IPC分类号： F42B30/08 ,  G01M1/32 ,  B21K21/06 ,  F42B13/00

CPC分类号： G01M1/32 ,  F42B30/08 ,  Y10T29/25

摘要： A method and an apparatus for reducing the spread of hit pattern for a rotationally-stabilized ammunition unit such as a projectile, which is discharged in a ballistic trajectory from an artillery piece towards a target which is to be combated including dynamic balancing of the shell (1) to reduce the effect of the air resistance between different shells, and increase hit probability. The inclination between the main axis of inertia of the shell and the geometric axis of the shell case are measured, whereafter these axes are set in parallel in that an adjustment weight (2) is mounted on one side of the point of gravity of the shell seen in its longitudinal direction. The adjustment weight (2) preferably consists of a disk or washer provided with an eccentric recess (4) for suitable weight and mass eccentricity.

公开(公告)号：US4655411A

公开(公告)日：1987-04-07

申请号：US680340

申请日：1984-11-26

申请人： Arne Franzen ,  Kjell Albrektsson ,  Jan-Olov Fixell

发明人： Arne Franzen ,  Kjell Albrektsson ,  Jan-Olov Fixell

IPC分类号： F41G3/04 ,  F41G7/30 ,  F42B10/50 ,  F41G7/00

CPC分类号： F41G7/30 ,  F41G3/04 ,  F42B10/50

摘要： The invention relates to means for reducing the spread of shots in a weapon system in which the shots are fired from the weapon in a ballistic trajectory from a launching device towards a target. It comprises means for measuring the position of the target, means for measuring the muzzle velocity of the ammunition unit, and, in one embodiment, also means for measuring the actual trajectory parameters of the ammunition unit (shell, projectile or the like), for instance the reduction of velocity in a specific trajectory distance. In response to these values the impact point is predicted. A braking command is transmitted to the ammunition unit via a radio line in response to the difference between the actual position of the target and the predicted impact point for braking the velocity of the ammunition unit in order to improve the hit probability. The braking means preferably comprises a plurality of braking flaps distributed about the periphery of the ammunition unit. Normally the braking flaps are retracted but they can be activated into a protruding position by an actuating device. Alternatively the desired braking effect can be obtained by separating different parts of the nose section from the body of the ammunition unit in order to increase its air-resistance.

摘要翻译： PCT No.PCT / SE84 / 00097 Sec。 371日期1984年11月26日 102（e）日期1984年11月26日PCT 1984年3月21日PCT公布。 公开号WO84 / 03759 日期1984年9月27日。本发明涉及减少在武器系统中射击的扩散的方法，其中从发射装置朝向目标以弹道的方式将武器从武器射出。 它包括用于测量目标的位置的装置，用于测量弹药单元的枪口速度的装置，并且在一个实施例中还包括用于测量弹药单元（外壳，弹丸等）的实际轨迹参数的装置，用于 例如在特定轨迹距离中减小速度。 响应这些值，预测了影响点。 响应于目标的实际位置与用于制动弹药单元的速度的预测撞击点之间的差异，通过无线电线路将制动命令发送到弹药单元，以提高命中概率。 制动装置优选地包括分布在弹药单元周围的多个制动襟翼。 通常制动襟翼缩回，但是它们可以由致动装置启动到突出位置。 或者，可以通过将鼻部的不同部分与弹药单元的主体分离以增加其空气阻力来获得期望的制动效果。