“总统先生,我上次向您提起过我们的航空兵发明了一种新式跳/弹攻击战术。”在这种攻击方式中,b-25需要超低空高速掠过水面接近敌舰船,在接近到适当距离时投下炸弹(一般为227千克炸弹),炸弹就像打水漂一样在水面落下,弹起,再落下再弹起,直到击中舰船的一侧为止,然后爆炸。
威尔基总统点点头。“是啊,不过我们的轰炸机根本接近不了德军舰队不是么”在舰队外围就被德军的舰载机消灭了干净,就算再好的战术也没用了。
阿诺德的脸色有些发白。“这种新式跳弹也能攻击水坝之类的建筑。如果德国人也掌握了这种技术……”他觉得以德国人的情报能力,恐怕早就知晓了这种炸弹的原理。
他猜的没错,德国人当然掌握了,原时空的二战,英国就用这种跳弹袭击了德军的水坝。
1943年1月,英军统帅部发动了著名的鲁尔战役,命令英国皇家空军从空中重点打击德国的鲁尔工业区首要目标是炸毁鲁尔附近的三个水库水坝。
鲁尔工业区中包括了埃森、杜塞尔多夫、多特蒙德等主要城市,内以采煤、钢铁、化学容、机械制造等重工业为核心,工业产值曾占全国的40%,在德国经济中具有举足轻重的地位。二战中著名的克虏伯钢铁企业就位于鲁尔工业区的埃森市。二战期间,克虏伯钢铁帝国直接或间接雇用的人员就达20万,为德国军队制造大炮、装甲车、坦克、潜艇和各种轻武器,为德国发动战争提供了强大的军事装备。毫不夸张的说鲁尔工业区是整个二战期间德国的军需基地,也是德国发动世界大战的物质基础。
德国人自然也知道这些水库水坝是工业区的“软肋”,在水坝周围部署了重型部队,在强大的防空火力下,盟军飞机很难低空飞行。然而,在高空投掷炸弹的准确性非常有限。如何轰炸水坝已经成为盟军的一个难题。
英国的航空工程师巴恩斯.沃利斯天才的想到一种超低空轰炸方式,轰炸机30米以下飞行,避开雷达侦测,然后在18米的高度,距离水坝700m左右的时候,以100km/h的飞行速度投放炸弹,根据他的计算,炸弹会在水上打水漂一样,弹跳6、7次抵达水坝,最后以小于5m/s的末速撞到水坝上,再落到水里,达到一定的深度之后,通过静水压力引信进行起爆,水下爆炸可以造成坝体成坑、气穴冲切、震塌拉伸、弯曲以及冲击波破坏等多种破坏形式,能够有效地摧毁水坝。
为此他还专门设计了一种特殊的航空炸弹。这种炸弹形状酷似一个圆桶,将这种航弹从低空投下,它可以以500转/分钟的速度旋转,同时在水面跳跃前进,躲过防雷网。
盟军利用这种炸弹和战术,经过多次的连环轰炸之后,鲁尔工业区的两座水坝毁于一旦。4亿吨洪水倾泻而出,不仅肆虐了四周的兵工厂、工业园区,下游的百姓们更是遭了殃。据悉,至少有3万余人在这场轰炸导致的洪水之灾丧命。
正在袭击各地水坝的德军攻击机挂载的正是这种跳弹。因为附近没有防空火力,一架架a-1攻击机贴着河面超低空飞行,将机腹下的跳弹丢进河里。随后这些跳弹在水面上一蹦一跳的冲向远处的水坝。
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