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燃料
块其实是可以用研钵研碎的。
一个匪夷所思的现象
mr-l
12年7个月前
回复于
化学
内容:还有十年前我去南宁的时候,记得郊区有很多砖瓦厂,都是使用煤作为
燃料
的。
【实验】制备高氯酸钾
atlas
14年7个月前
回复于
化学
内容:否则余酸在干燥后浓度变高,做火箭
燃料
可能导致
燃料
自然。
沙漠中为什么不利用太阳能要制造冷凝水呢?
hambaby
14年5个月前
回复于
极客DIY
内容:机动车队穿越沙漠,必须有庞大的补给力量,
燃料
车、饮水车必须有冗余配置,坏掉了就丢弃,不考虑维修了……引用第1楼虎哥于2010-09-20 02:19发表的 :楼主一定生活在温暖潮湿的地方,才会提出如此建议
慢速燃烧的燃料(煤/木屑)用于燃气轮机,困难在哪里?
荷城工业_Nitload_Industry
1年5个月前
回复于
极客DIY
内容:根据之前翻液体火箭发动机燃烧稳定性的相关书籍所得,我怀疑粉末
燃料
燃气轮机最大的问题是没有预混合过程,液体火箭发动机推力室中推进剂组元在燃烧前有一个混合的过程,固体火箭发动机也有熔融和沸腾混合的过程保证燃烧组元的均匀性
被定向烧蚀的喷口特写~~~~~~~
xj198398xujing
16年3个月前
回复于
喷气推进
内容:铝材本身的特性就不适合用于喷口就算勉强使用发动机的工作时间也不能超过1S如果使用高温
燃料
铝喷口也参加燃烧那能保持喷燃比的时间更加有限看了LZ的喷口说明LZ还是有一定的机械加工的条件 建议可以使用铝密封塞
回 2楼(bolide) 的帖子
arliloukingd
11年8个月前
回复于
喷气推进
内容:外径40 厚度5.5 耐压2MPA 长度200(药柱120) 喷喉10
燃料
KNSU 几层纸做隔热层 这个规格应该可行吧,我是没看明白那些计算公式的意义,只是硬套的而已。。
Re:回 8楼(ehco) 的帖子
ehco
12年8个月前
回复于
喷气推进
内容:2.对于同一
燃料
,特定的外界气压和燃烧室压力下,对应一个唯一的扩张比。
KNDX迷你制备机---项目--立项
立蛋
14年5个月前
回复于
喷气推进
内容:模具可以用失蜡法做个以锌(蓄电池里边很多,而且普通煤气就可以烧融化,放铁锅里边可以用煤气烧融化)为原料的铸造模具,钻孔太麻烦,最好中间用不锈钢,一头大,一头小,以便
燃料
很容易弄出来,画图太麻烦了,就没画了
【原创帖】KNSB模型火箭理论计算与实践
inception
12年4个月前
回复于
喷气推进
内容:在这段时间内,速度不断增加,达到了124m/s
燃料
燃尽后,加速度迅速落为-40m/s2,由公式:F阻=C×S×v2火箭此时受巨大阻力,速度迅速下降
回 12楼(大庆发射区) 的帖子
t-600
11年7个月前
回复于
极客DIY
内容:而是推力有多大氣流有向量本身已經是推力,基本上然料噴出的流速夠大外殼夠耐庄耐熱,渦輪也可以節省了,就像向酒瓶充瓦斯點著一樣,作用力也是足夠的,尾炎也很漂亮渦輪主要的功能是把流體進一步加庄藷能後適量地放出,減低
燃料
的消耗量不管之前做走馬燈的還是渦噴的原理還是一樣
固体火箭版块资源索引(2005-2008)
power_rdx
16年4个月前
发表于
喷气推进
内容:XXXXXXXXXXXXXXXXXXXX/t/6288火箭
燃料
外国网上找到的 XXXXXXXXXXXXXXXXXXXX/t/5944高速动能导弹及超高速导弹用固体火箭推进剂 XXXXXXXXXXXXXXXXXXXX,关于AP做
燃料
的E文资料 XXXXXXXXXXXXXXXXXXXX/t/5188低铝含量NEPE推进剂燃烧性能研究(2分 XXXXXXXXXXXXXXXXXXXX/t/5252模型火箭重心(CG)和压心,XXXXXXXXXXXXXXXXXXXX/t/6204【图】S系列发动机KNDX药柱制作方法 XXXXXXXXXXXXXXXXXXXX/t/4697[原创]KNDX火箭
燃料
压铸教程 https://,4839[讨论]硝酸脲在推进剂中的应用的可行性 XXXXXXXXXXXXXXXXXXXX/t/3502RNX资料解密 XXXXXXXXXXXXXXXXXXXX/t/4384R-AP及DBPR-AP
燃料
配方公布,20毫米直径KNDX发动机测试 XXXXXXXXXXXXXXXXXXXX/t/5029[原创]KCLX火箭测试版三次发射实验 XXXXXXXXXXXXXXXXXXXX/t/4882D&L-1.0火箭
燃料
无喷口测试
40mmknsb可复用金属发动机“beetle”试车成功
某倒吊的亚雷斯塔
1年8个月前
发表于
喷气推进
动手实践: 实验报导
内容:先给数据:
燃料
265g,总质量1365g,药柱直径36mm,药柱中心开口10mm,内径40mm,外径(两侧紧固件较厚,壁厚其实是2mm)50mm,发动机壁和堵头材料304不锈钢,喷口材料酚醛树脂,使用304,然后,分析下Ft图,理论和实际较符合,但相对于理论预计,前期较平缓,这个大概就是我前面说的,把点火要直接倒进去导致的,导致点火压强不够,然后一些
燃料
在较低压强下燃烧,这部分
燃料
产生的气体速度较低,这才导致了总冲和比冲较低的情况,同时我认为
燃料
虽然保存较久,但受潮程度很低,从推力曲线和理论预计的如此相同也可以看出来。
MARK_GYC
2年3个月前
电文
查看详情
内容:将来我将会寻求帮助,更加深入的研究更多高能
燃料
的推进剂我自制的第一个PPR管的发动机,推力2kg(装药15克,KNSU)
寒冬来临!中国电动汽车领域的风险投资已经下降了90%
公众号EV技研作者1900
5年7个月前
发表于
电动汽车
内容:23740项汽车专利事件】调查电动汽车背后藏着——石油、战争、地缘政治6分钟完成充电,续航320km——东芝TNO/NCM电池初探老铁,来杯特斯拉专利文献不,电磁口味的【日本庆应大学、群马大学数据】EV与
燃料
车的能量效率对比
中国业余界第一台液氧甲醇发动机地面测试成功
神の左手
11年5个月前
回复于
喷气推进
内容: 总体来说这次试车非常成功,通过燃烧室压力读数来看燃烧室压力非常稳定,驱动压力3.1MPA,驱动管路长度为4米,燃烧火焰长度1.5米左右,氧化剂与
燃料
供应读表压力,发动机燃烧室与喷注器采用10公斤T2车出,外壳为45#钢,(不是因为45#钢便宜而是因为45#钢与紫铜材质焊接性能高)再生冷内部独立增加了稳压机构为
燃料
提供稳定压力,预燃室以及密封盖采用CR12车出,整套发动机质量为
液机试车成功!
虎哥
13年4个月前
回复于
喷气推进
内容:
燃料
流量有多大,挤压装置是如何工作的?
旧的不炸新的不来第二季
虎哥
12年0个月前
回复于
喷气推进
内容:如果能自动升压,要么
燃料
有问题,要么燃喷比太高,统称“重大问题”,都可能引起爆炸。
微型塑料固体火箭发动机
sjzter
9年11个月前
回复于
喷气推进
内容:是微小的固体渣滓,火箭
燃料
的要求很简单:燃烧稳定,推力大!
氯酸钠+苯甲酸钠----很猛的推进剂
power_rdx
14年9个月前
回复于
喷气推进
内容:我在那个帖子中的观点只提到了
燃料
燃烧时的危险性,根本就没有提到什么机械感度以及安定性,我不知道你跟我这扯了一大堆不相干的是什么意思
[CZSA]国内第一次塞式喷管探空火箭发射
御坂18650
4年8个月前
回复于
喷气推进
内容:国内的话我的第一个线塞发动机上箭发射是4月18日,仍然使用了试车时的
燃料
配置,总冲和推力都较低,但是发射时手机内存满了没有录到,于是就没有发出来,只能上组装完成的图看看了希望楼主继续努力,不过也要注意安全啊
周末粉压KNSU测试结果
麒麟
10年0个月前
回复于
喷气推进
内容:建议用自制的比较优质的BP粉压而不是可以状的,因为时粒状,除非你的压力够大把他们压为一体让
燃料
逐次燃烧而不是一下窜火。
RNX试车,请大神拍砖,有图片有视频
希特勒玻珠子
11年6个月前
回复于
喷气推进
内容:纯堵漏王(包括用AB胶)在
燃料
长时间燃烧后扩孔非常厉害,你可以适当地改一改,将内喷口用螺丝帽或者铜管做,这样烧蚀会减轻。
燃气-蒸汽轮机
大仙
16年6个月前
发表于
电气电工
内容:它作为热电并供机组使用,
燃料
利用率可高达80%左右,单机组最长运行时间已超过10万小时。
靠谱吗?NASA测试无需推进剂的火箭
b2353497
10年6个月前
发表于
喷气推进
内容:来自美国宇航局约翰逊航天中心的科学家已经发现,使用基于微波推进技术的发动机不需要推进剂就可以产生推力,本项工程的最新成果已经在7月31日公布,如果该技术实用化后将大大降低航天器的
燃料
携带量,未来的航天器将更加便宜和快捷,有趣的是,在罗杰·索耶提出EmDrive无工质推进装置时一些研究人员认为该动力违背了物理定律,许多人都嘲笑这个设计,但现在这个设计被证明是可行的,这意味着未来的航天器可以不需要携带
燃料
就能进行空间飞行,
压铸KNSU发动机整体成型技术完全教程+1个精美的火箭制作流程
神箭凌霄
16年1个月前
发表于
喷气推进
严肃内容: 教程/课程
内容:一定要压实成果 注意,不要打孔接下来配制
燃料
,KNSU,顾名思义,硝酸钾加蔗糖,虽然白砂糖主要成分也是蔗糖,但是它结晶大,我不主张采用,比例KN65%,SU35%.当然,也可以用KNDX.配制时最好在桌子上铺一张纸
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