六四八 技术升级（下）
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“最后，关于它的威力和射程：七十毫米口径，发射三点八公斤的高爆弹，比七五炮的五点五公斤高爆弹其实相差不远，基本上还能算是一个级别的。龙腾小说网ltxs520.com在二战中表现出的缺陷主要是对装甲目标和混凝土工事效果不好但我们显然碰不到那些东西。二千七百米的极限射程虽然远不如七五炮的八千五，可用来欺负这个时代的对手也已经绰绰有余了我们现在的十二磅炮才两千米射程，照样是战场上的绝对主宰。”
马千山举出的一连串数据让下面那些军事组指挥员纷纷点头，他们都是打过实战的，差不多人人都领略过大炮虽好，却拖不进内陆的苦楚。
“确实，从我们先前经历过的几次战斗来看，只要是能让十二磅炮展开并且发挥威力的地方，取胜都很轻松。但是很多地方青铜炮根本拖不上去，只能靠步兵硬啃。在打赤嵌城时炮兵基本没发挥作用，敌方火力点都是靠手榴弹和炸药包解决的。”
“吕宋那边也差不多，除了靠海有军舰相助，稍稍深入内陆以后炮兵就完全用不上了林子太密，火炮拖不进去。”
唐健和王海阳等人先后作出评价，而冯宇飞也从善如流：
“没问题，工业组会开发一款尽可能轻便的步兵伴随炮以及相应弹药就用日制九二式为模版好了。”
“但七五炮本身的开发也千万别落下，高低搭配中‘高’才是核心。”
马千山虽然提出了对九二式的要求，但却并未因此而降低对于七五炮的要求。事实上，他很快便提出了许多冯宇飞原先没想到的新要求：
“七五炮的开发年代。相对于其整体技术水平还是比较早的。因此她虽然和同时代火炮相比已经有着颠覆性的优势，但本身其实还有许多潜力可挖，这在后续各国对其仿制和研发过程中都慢慢体现出来。这些改进我们完全可以提前用上，把七五原本的一些问题规避过去。”
说着，马千山从口袋里摸出一个小本子。开始一条一条对着读显然他在这方面早就考虑过许多。而冯宇飞也立即开始记要点不过她并不是亲自动手，而是斜了徐慧一眼，后者愣了一愣，之后便立即反应过来，摸出小本子准备做记录。这动作让会议室里响起一阵轻笑声别看冯宇飞先前是主动找徐慧逼婚的，为此还请了妇联出面。但成亲后却丝毫不显弱势，不管在家事还是学术上都说一不二，驭夫手段堪称高明。
在笑声中，马千山指着幻灯图片侃侃而谈：
“首先是炮闩部分，原版七五炮在这方面犯了个小错误：在采用了金属一体式弹药的同时。却依然用螺栓式炮闩加强密封性，后来实践证明是过于保守了。金属弹壳其实已经足够保障炮膛闭气，所以在这里建议还是直接采用后世常见的锲式炮闩，以简化生产和操作步骤。”
“其次是炮架部分，原版七五炮的单腿式炮架完全是传统加农炮型制，导致火炮应用范围严重偏窄。方向射界仅有左右三度，高低射界更是窄得可怜最大仰角居然才十八度，这严重制约了它的性能发挥。这个一定要改成开式大架。我们建议采用美军的m2a3型号炮架，使方向射界可以扩充到左右三十度，高低射界至少扩大到四十五度。这样就能够把七五炮的射程优势发挥到最大，同时使其获得一部分曲射能力。”
“另外，七五小姐刚出来时炮口制退器还没被发明，后来才被加上。但如果我们从一开始设计时就考虑到炮口制退器对后坐力的削减效果，在火炮膛压，液压管退系统和炮弹装药等各个方面的数据设计上。也许能比原版更加宽裕一些，结合炮架部分对射击仰角的改进。我们这一款新火炮的射程想必能比原版七五有大大提高我估计应该可以扩展到十五到二十公里左右。”
“那可就是榴弹炮了，真正的‘一炮糜烂数十里’啊。”
旁边有人立即笑道。而马千山也点点头：
“是啊，以我军目前的火力优势，暂时还没必要专门去研究一款用于超视距射击的榴弹炮，但既然七五炮的先天条件很好，让它兼具这一功能也不错。”
“超视距射击的话，对于炮兵素质和通讯手段的要求就又要提高许多了。”
旁边有人提醒道，马千山则自信道：
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