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按照装甲战车近程防护武器系统必须能够抵御未来从暴露或遮蔽位置发射的攻击弹药的要求，瑞士鲁瓦格公司战斗部分部开发出了一种近程主动防护破片弹药。目前口径76毫米，可利用很多装甲战车通用的韦格曼式烟幕弹发射器进行发射。
以0.7克黑火药发射的近程防护弹药可飞行约50米，在约7米高度空爆，以高毁伤破片雨的样式射向目标。近程防护弹药的战斗部包括：装在半圆形前断面圆柱形侧面的弹体内的112克PBXW-17型塑料粘结炸药，即以黑索金为主要成份的钝感炸药；刚性固定在环氧树脂基体内的1 100颗直径4毫米钢球。该弹药无后向预制破片。近程防护弹药的主要爆炸模式是以60°圆弧倾斜向前，此圆弧的左、右45°为少破片区。当选定高度7米，下降角45°时，空爆的60°圆弧区的有效面积约220平方米。近程防护弹药初始破片速度为1 100米/秒，毁伤速度下降到784米/秒。
当近程防护弹药发射时，其机电式引信使用发射药产生的压力作为能源，故发射前引信是无能源的。当弹药离开发射器时，安全针脱落，释放解除保险转子。1.8～2.4秒以后，与储能弹簧相连的转子移动雷管，使之与导爆管对准，至此引信解除保险。从解除保险至3～3.2秒以前任何撞击都将引起该弹药爆炸。如无撞击发生，该弹将自动引爆。一旦空爆机构失灵或该弹在1.8～2.4秒以前撞击目标，则引信中储存的电能将被释放，这样的哑弹将无法起动引信。
使用者还可选择一个发射器内混装的不同弹种，因此可以保留选择低毁伤防护措施（如烟幕弹）。
Following requests for a close-range armoured fighting vehicle(AFV) defensive weapon system able to neutralize prospective attackers in the open and in defilade positions, the Swiss company RUAG Warhead Division has developed the CRAD (Close Range Active Defence) fragmenting munition. the CRAD (currently 76mm calibre) can be fired from Wegmann-type smoke grenades launchers, a common fit-ting for many AFVs.
The CRAD, launched by a 0.7g black powder charge, flies approximately 50m and airbursts at a height of some 7m, showering the target(s) with highly lethal fragments. The warhead consists of 112g of PBXW-17, a RDX based insensitive explosive contained within a domed front section and cylindrical side body, the full munition containing over 1,100 4mm-diameter steel balls held rigidly in an epoxy matrix. There are no rear preformed fragments. The main fragmentation pattern is biased forwards in a 60° arc, with lesser zones at 45° left and right from this. For an airburst at the designated height of 7m at an angle of descent of 45°, this gives an area of effect for the main 60° arc of approximately 220m2. The munitions initial fragment velocity is 1,100m/s and are lethal down to 784m/s.
When fired, the electromechanical fuze uses the pressure from the propellant as the source of its energy, so is inert until fired. Upon leaving the launcher, a safety pin is discarded, releasing the arming rotor. After 1.8-2.4 seconds the spring-powered rotor has moved the detonator in line with the lead charge, so arming the CRAD. Any impact from then until an elapsed time of 3-3.2 seconds will cause the round to detonate. If no such impact occurs the round will detonate automatically. If the airburst mechanism fails, or the round strikes an object before 1.8-2.4 seconds, the stored electrical energy within the fuze will be discharged, so leaving a bud with no means to initiate the fuze.
This gives the user the option of mixing various types of grenades in one launcher, therefore retaining alternative less-lethal defensive measures (such as screening smoke).
以0.7克黑火药发射的近程防护弹药可飞行约50米，在约7米高度空爆，以高毁伤破片雨的样式射向目标。近程防护弹药的战斗部包括：装在半圆形前断面圆柱形侧面的弹体内的112克PBXW-17型塑料粘结炸药，即以黑索金为主要成份的钝感炸药；刚性固定在环氧树脂基体内的1 100颗直径4毫米钢球。该弹药无后向预制破片。近程防护弹药的主要爆炸模式是以60°圆弧倾斜向前，此圆弧的左、右45°为少破片区。当选定高度7米，下降角45°时，空爆的60°圆弧区的有效面积约220平方米。近程防护弹药初始破片速度为1 100米/秒，毁伤速度下降到784米/秒。
当近程防护弹药发射时，其机电式引信使用发射药产生的压力作为能源，故发射前引信是无能源的。当弹药离开发射器时，安全针脱落，释放解除保险转子。1.8～2.4秒以后，与储能弹簧相连的转子移动雷管，使之与导爆管对准，至此引信解除保险。从解除保险至3～3.2秒以前任何撞击都将引起该弹药爆炸。如无撞击发生，该弹将自动引爆。一旦空爆机构失灵或该弹在1.8～2.4秒以前撞击目标，则引信中储存的电能将被释放，这样的哑弹将无法起动引信。
使用者还可选择一个发射器内混装的不同弹种，因此可以保留选择低毁伤防护措施（如烟幕弹）。
Following requests for a close-range armoured fighting vehicle(AFV) defensive weapon system able to neutralize prospective attackers in the open and in defilade positions, the Swiss company RUAG Warhead Division has developed the CRAD (Close Range Active Defence) fragmenting munition. the CRAD (currently 76mm calibre) can be fired from Wegmann-type smoke grenades launchers, a common fit-ting for many AFVs.
The CRAD, launched by a 0.7g black powder charge, flies approximately 50m and airbursts at a height of some 7m, showering the target(s) with highly lethal fragments. The warhead consists of 112g of PBXW-17, a RDX based insensitive explosive contained within a domed front section and cylindrical side body, the full munition containing over 1,100 4mm-diameter steel balls held rigidly in an epoxy matrix. There are no rear preformed fragments. The main fragmentation pattern is biased forwards in a 60° arc, with lesser zones at 45° left and right from this. For an airburst at the designated height of 7m at an angle of descent of 45°, this gives an area of effect for the main 60° arc of approximately 220m2. The munitions initial fragment velocity is 1,100m/s and are lethal down to 784m/s.
When fired, the electromechanical fuze uses the pressure from the propellant as the source of its energy, so is inert until fired. Upon leaving the launcher, a safety pin is discarded, releasing the arming rotor. After 1.8-2.4 seconds the spring-powered rotor has moved the detonator in line with the lead charge, so arming the CRAD. Any impact from then until an elapsed time of 3-3.2 seconds will cause the round to detonate. If no such impact occurs the round will detonate automatically. If the airburst mechanism fails, or the round strikes an object before 1.8-2.4 seconds, the stored electrical energy within the fuze will be discharged, so leaving a bud with no means to initiate the fuze.
This gives the user the option of mixing various types of grenades in one launcher, therefore retaining alternative less-lethal defensive measures (such as screening smoke).