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第129章 铸造三磅炮(1 / 2)

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靶子是以一寸厚的厚木板所制成的,一枚五两重的弹丸,居然把厚木板打得粉碎,这样的威力震撼了在场的工匠。

“厉害多了啊!”

“威力果然增大了不少!”

工匠们赞口不绝。

但李老二还是不满足,因为即便是改进了三百斤佛郎机,一斤重的弹丸也无法击穿后金军的盾车。要知道后金军的盾车,木板就有三寸厚,还覆盖了牛皮和铁皮,没有两斤以上的弹丸很难击穿。

目前明军能破后金军盾车的火炮只有红夷大炮和大将军炮,这两种炮都十分沉重,装填速度又非常慢,根本无法阻挡住后金军的盾车推进。

老二找到了孙承宗,递上了自己绘制的三磅野战炮设计图:“督师,下官觉得,应该铸造一批下官设计的三百斤重的野战炮,该炮能够发射两斤半重的炮弹,专门用来对付建奴的盾车。”

孙承宗看了一眼设计图,从图纸上他可以看得出来,这是一种前装炮。于是问道:“该炮不是红夷大炮和将军炮的缩小吗?装填方式与红夷大炮、将军炮相似,装填速度太慢,且威力偏小,此炮高不成低不就。”

按照孙承宗的想法,红夷大炮和将军炮虽然装填速度慢,但是炮弹威力大,射程极远,这两个优势可以弥补装填速度慢的缺点。而李老二的三磅炮,威力和射程又不如两款重炮,装填速度又不比两款重炮快多少,所以他觉得是一种鸡肋。

李老二又从袖子中取出一张三磅炮炮弹的图:“督师,此乃下官设计的新式炮弹,把软木弹托同炮弹结合在一起,在装填炮弹的时候无须再塞入木板来闭气,可以装填完定装药包之后,塞入炮弹,即可完成装填。如此一来,装填速度可以提高许多。”

孙承宗看着这些炮弹的设计图,眼中放出亮光:“若是改进了炮弹,提高射速,该炮威力更甚于千斤佛朗机炮,重量又轻得多了,装填时间与千斤佛郎机相当啊!好!好!好!若我大明有此利器,何惧建奴!”

看到一种炮弹的图纸上面标注着“榴霰弹”三个字,孙承宗问道:“李将军,这榴霰弹又为何物?”

“就是散子,相当于虎蹲炮发射的散子,但比虎蹲炮的威力要大得多,射程也远许多,这榴霰弹可以打出百步之外爆开,喷射出的散子又能再喷五十步,总射程为一百五十步,比虎蹲炮散子五十步射程要远了许多,而且内装弹丸数量也多,威力也大多了。”

榴霰弹并非开花弹,不是在炮弹内灌入火药,落地后爆炸,而是巧妙的利用了火药气体灌入弹体内,令弹体内的铁珠喷射而出,形成了弹幕。

李老二自然也懂得制造软木管引信开花弹和软木管引信爆炸榴霰弹这两种炮弹,只是这两种炮弹还需要制造手摇式攻丝车床才能造得出来,技术难度要求太高了,所以李老二就暂时没把那两种新式炮弹拿出来。

可是仅仅是榴霰弹,就令孙承宗两眼放出亮光:“李将军可以造出此等神器?”

“还请督师拨给下官一批生铁,下官立即亲自督造此炮,再铸造一批炮弹,只要铸造出来,督师亲眼目睹便知晓了。”

“好!老夫这就给李将军安排工匠和生铁。”孙承宗摸着胡子点了点头。他知道李老二刚刚试验了铁芯铜壳子铳,威力比原来的铸铁子铳提高了不少,而且解决了很大一部分的漏气问题。当然了,造价也是直线上升许多,毕竟铜的价格要贵得多了。

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