第一百二十一章 六角炮快船
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蓝天白云下,一艘外形优雅的战舰破浪航行,船头劈开碧蓝的海水,泛起朵朵白色的浪花,洁白的船帆吃够了风,把巨大的动力传送给流线型的船体。但是这艘船不仅使用风帆来驱动,船舷两侧还伸出一排排划桨,因为有风,桨手们划桨的度倒是不快。
这艘战舰的名字叫星岛号,战舰的外形类似于阿拉伯型战舰,但又比阿拉伯战舰要修长许多,长宽比有点类似于飞剪船,可以说这艘一艘飞剪船和阿拉伯船的结合体。
这艘桨帆船排水量五百吨级左右,在主甲板下面,水线之上有两层甲板,上层为炮甲板,每一舷有十二门炮,全部是短管卡伦炮,其中八门三十二磅短管卡伦炮,四门六十四磅短管卡伦炮。
短管卡伦炮射程很近,但也因为炮管短的缘故,膛压小,炮管壁薄,炮的重量轻,一门六十四磅卡伦炮重量不过两千五百多斤重,比一门二十四磅长管加农炮重量还轻。
短管炮的第二个优点是装填度快,开花炮弹稳定。正因为炮管短的缘故,装填炮弹的度比装填长管加农炮度要快多了,而且炮管短,可以像装填臼炮开花炮弹那样装填,采阮可靠的二次点火法点燃开花弹。
长管加农炮的开花炮弹完全是依靠火药爆炸时点燃设置木弹托内的引信,开花炮弹的爆炸成功率非常低,只有二到三成的爆炸成功率。而短管卡伦炮的开花炮弹是和臼炮的开花炮弹点火方式一样的,在炮口直接点燃炮弹引信,再点燃炮尾的,采叁次点火法,开花弹的爆炸成功率就相当高,达到了八成。
卡伦炮的最大缺点就是射程太近,穿甲能力太差。
一开始艾伯特和王新宇激烈的争论过这个问题,艾伯特提出,一艘战舰若是以这种炮为主的话,那么近的射程,只有两三百米,射程太近了。
对此,王新宇反驳说:“你们欧洲人的海战,不是都是在两三百米内展开的?长管加农炮射程是远,可是在过了三百米之后,命中率又如何?所以还不如加大口径。至于穿甲能力太差的缺点,可以用开花弹来弥补。”
开花弹,正是因为开花弹的优势,所以王新宇放弃了长管加农炮,使用短管卡伦炮。拥有开花弹的三十二磅短管炮,威力一点不输给二十四磅长管加农炮。
不过短管卡伦炮只不过是其中的一种武器,这种快战舰还有另外一种武器,就是设置在主甲板上面的旋转炮塔。
星岛级飞剪船型式桨帆战舰的上层甲板上有四座可以旋转的炮塔,这种炮塔的底座上面安装有圆形导轨,铁轮子镶嵌在导轨上,涂抹了润滑油的铁轮子摩擦力很小,炮手们可以轻松推动旋转炮塔转动。炮塔外壳是由厚实、富有弹性的橡木建造,在橡木外面还包裹上了厚厚的一层铜板,用来保护炮塔。
每一座炮塔内,都有一门一百五十毫米的长管加农炮从炮膛射击孔伸出,也就是这艘桨帆快战舰一共有四门可疡式的新型加农炮。
若是仔细观察这种炮的炮口,就会现非常奇怪,因为这种炮的炮管内壁居然不是圆的,而是六角形的!
六角炮,是一种技术含量最低的线膛炮,不需要太高的基础工业就能造出来,以十七世纪的工业水平完全可以制造出这种炮,只不过当时的人们根本没有考虑过这一点,只要能够想得到就能造得出来。
这种炮的口径和二十四磅加农炮的口径差不多,可是炮弹却重了非常多。因为炮弹是长的圆柱形的,一炮弹的重量居然可以达到惊人的九十磅!
六角炮不仅炮弹重,而且射程非常远,炮弹威力极大。这种炮虽然是最简单的前装线膛炮,但也毕竟是一种线膛炮啊,线膛炮的射程和精确度都是滑膛炮远远不能相比的,这种炮的最大射程可达七里,精度十分高,可以准确击中一里之外的目标』仅如此,线膛炮的穿透力非常强大,能轻松击穿当年任何一艘战列舰。
当然六角炮也有缺点,就是炮的造价极其昂贵,炮弹造价也是极其昂贵。受到当年工艺水平的限制,这种炮的单价居然高达两万两银子就是说,造一门这样的炮,至少可以造五六十门二十四磅加农炮。星岛号上的四门六角炮,造价就高达八万两银子。
所用的炮弹分为两种,一种是实心炮弹,虽然是实心炮弹,可是造价也不便宜,一枚实心炮弹的造价都能高达一百多两银子。那是因为六角炮的炮弹铸造十分麻烦,先炮弹的形状有点螺旋形,对倪的要求非常高;其次这种炮弹因为射出去是旋转的,需要保证铸造的时候炮弹的各部位重量均匀,否则射的时候炮弹在炮膛内旋转,将会产生偏差,会导致火炮炸膛的事故生。
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