第二百七十二章 改良蒸汽机
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当薛凤祚见到一匹骡子居然能够牵引一辆如此庞大的车辆时，惊得瞪大眼睛，过了半天才问了一句话：“一匹骡子居然能拉如此多货物啊？真是奇迹！”
走到铁路跟前，只见地面铺着道砟，上面有枕木，枕木上面横着两根木头轨道，木头轨道面上覆盖了薄薄的铁皮。这些拉货的车辆，轮子也是木头外面包着铁的，铁和铁之间的滚动摩擦力很小，所以骡子就能牵引更多重物，加上轨道平整，不像路面那样颠簸，能比在马路上行驶的车辆牵引更多重物。
一行人步入东番枪炮厂内，一路参观过去，薛凤祚对着枪炮厂内的一切设施都感到十分惊奇：“真是巧夺天工＾建水闸，用水力机械来打造钢铁，巧夺天工啊m辈实在是佩服宋老先生！”
宋应星道：“这并非老夫一人之力，而是大家齐心协力5起来，这枪炮厂设计的初衷还是南海郡王所提！”
薛凤祚大吃一惊：“是王将军？这些都是他想出来的？”
宋应星笑着点了点头：“这枪炮厂的设计，水力机械和这铁路，都是王爷的想法，他想出来之后，我们按照他设想的去做便是了。”
谁知道梅文鼎却说：“京城的皇上也是热爱技艺数学，皇上还让南怀仁当老师，学得不少泰西技艺，天文地理和数学。”
宋应星不知道用如何回答，王新宇接上话：“鞑子皇帝学泰西科学，只是好玩而已，他把泰西科学看成是奇巧yin技，单纯的当成玩具⊥说那南怀仁小车，鞑子皇帝就是拿来玩的，却禁止他人学习泰西科学本藩是要让蒸汽机为我华夏服务，让我华夏立于天下不败之地p朝一日，我华夏的蒸汽铁甲舰可以开到泰西人那边！”
“京城的皇帝难道真的会禁止他人学泰西科学？”梅文缎点不大相信。
“非我族类其心必异｛担心我们汉人学会了科学，会利用科技力量去推翻他的满清鞑子统治｛们只希望我们汉人世世代代给他们当奴隶！”王新宇道。
正说话间，一行人步入了蒸汽机实验室内。
薛凤祚看到锅炉和气缸，问道：“这就是你们造的蒸汽机？”
“正是！”王新宇指着蒸汽机解释道，“南怀仁所造的蒸汽轮机，密封性差，功率低，而且对叶片材料要求太高，以现在的冶炼技术根本达不到。所以我们想出一个办法，就是让蒸汽进入密封的气缸内，用来推动活塞移动，再通过连杆曲轴，把直线动能转变成转动的动能，这样就可以驱动车辆和船。”
薛凤祚仔细打量这一套蒸汽机，又用手去抚摸，细细的看每一处构造，看了足足有半个时辰，方才转过头来，感叹一声：“妙！确实是妙（过各种阀门，控制蒸汽流动的方向，用来实现活塞来回移动，再带动连杆曲轴，推动飞轮，实在是妙！”
“理论上是可行了，但是真的运转起来，却不是那么回事，根本就转不动。”宋应星摇了曳道。
王新宇道：“点火吧！让薛先生看看。”
几名工人点燃锅炉，过了半天，水烧开之后，这台蒸汽机比上次没有好上多少，虽然已经改进了阀门，不需要人去转动阀门来控制蒸汽流动方向，已经可以通过自动的联动阀门控制，但是气缸运行到底，要退回去却半天无法移动。
薛凤祚果然是一位伟大的科学家，一下就看出问题来了：“密封性不够，锅炉产生的蒸汽压力太低；另外，阀门结构不够严密；还有，这蒸汽膨胀之后，就留在气缸里面了，得等到自然冷却才能缩回去。用多加一个阀门，把气缸内的蒸汽引出去！”
“好！”王新宇大喜，“既然如此，那就让薛先生来主持这蒸汽机！”
但是薛凤祚却很担心的说道：“宋先生，王将军，草民一家都在北方。若是让朝廷知道草民为你们做事，只怕家人会遭不测。”
王新宇道：“至于这个问题你们不用担心＆先生，还有梅先生你们的家人，本藩会派人把他们带到安全的地方的，以免他们遭了鞑子朝廷毒手们就安心研究这蒸汽机好了；要能改良成功，你们就是我华夏第一功臣！”
“将军，这个恐怕真改起来，需要相当一段时间。”薛凤祚道。
“时间都不成问题！关键是要能成功！”
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