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约找到 283 条结果,耗时 0.225 秒
Re:回 28楼(123123123) 的帖子
123123123
13年11个月前
回复于
喷气推进
内容:从lz的发帖推测水平,烟雾肯定能做,但lz没有采用烟雾而采用闪光,自然有道理 我是这样想的:保留声音,且能看到闪光(加点
镁粉
),但是让威力小一点,
話說之前燃料助燃劑的問題…………
拔刀斋
15年3个月前
回复于
喷气推进
内容:趁早改用
镁粉
,可惜本地没有卖引用第18楼black于2009-10-23 18:05发表的 :纳米级别的铝粉才能够保证在燃烧的过程中完全燃烧.....上次在《含能材料》上面看到说微米级别的铝粉都不能保证在燃烧室中燃烧完全
星火计划-试车失败分析(科创基金资助项目)
法式油炸薯条
8年11个月前
回复于
喷气推进
内容:况且据说楼主是使用硝化棉(而且还是高氮棉)加
镁粉
作为点火药的,从视频看到楼主的发动机连喘燃迹象没出现就炸了,很明显不是AP混合问题。
求助啊
zhaokenb
14年0个月前
回复于
化学
内容:今天滤纸买来了,过滤出来以后发现带有很多黄色的杂质(类似沙子的颜色,而且颗粒很大),白色杂质肯定是二氧化硅,毫无疑问 我用的二氧化硅是国药的,纯度95%,
镁粉
是99.5%,不大可能出现太多二氧化硅和镁以外的杂质
要做液体发动机了,寻找一种雾化器
vol2088
15年4个月前
回复于
喷气推进
内容:300g燃料烧完了也飞不多高后来实验的时候发现无水乙醇+高浓度过氧化氢的效果很强大,拿已经很成熟的PPR发动机试车发现能量很强大所以最近打算试一下70%左右的双氧水+无水乙醇混点硝酸,然后在燃烧室里放一些
镁粉
和铜粉以及二氧化锰
镁热法炼硅
Guitarra
14年0个月前
回复于
化学
内容:LZ的实验我高中时做过.那时候用的计量比的
镁粉
和二氧化硅粉填进小试管压紧,然后在煤气灶上加热到一定程度就会反应,反应速度很快整坨粉末变成红热.完了以后把固体掏出来倒进稀盐酸,爆得很厉害有黄色的火焰(应该是有硅烷生成了
話說之前燃料助燃劑的問題…………
拔刀斋
15年3个月前
回复于
喷气推进
内容:铝不能用碳还原,否则生产铝就不用电解了纳米级靠磨和过筛没用,但是
镁粉
燃点比较低可以部分代替纳米级铝粉不纯的三氧化二铁也可以用引用第11楼lily于2009-10-21 15:25发表的 :铝能用碳还原吗
回 11楼(思念·落叶) 的帖子
zhaokenb
13年1个月前
回复于
化学
内容:......方案如下:1.将氢氧化钠溶于四氢呋喃中2.向溶液中投入一小块钠,若产生气泡(要保证长时间不断产生,避免THF中的水影响)的话,基本就表明氢氧根是能电离的了还有一个方法:向熔融氢氧化钠中投入
镁粉
菜鸟造火箭
vip2005pig
11年3个月前
回复于
喷气推进
内容:4mm厚硬纸板 尾翼形状:三角 尾翼边长数据:14:9.5:16.4(测量及制作有误差) 配重:有(粘土,重量约14g) 主要粘结方式:热溶胶 回收装置:无 燃料净重:9g 燃料类型:BP(混3%
镁粉
请问铝热氧化钼在混合时会发生自燃吗?
哈哈哈哈哈士奇
5年0个月前
回复于
化学
内容:三氧化铬易潮解,会对火感产生负面影响,Cr(VI)类化合物常用于铝材的封闭处理和阳极氧化,因为其强氧化性会使铝表面氧化膜增厚钝化,导致的结果是火感进一步降低,我使用过重铬酸钾和铝粉的混合物,其火感低到需要少量
镁粉
激发
请问怎样能让端面燃烧KNSU火箭升空?
black
15年1个月前
回复于
喷气推进
内容:所以在某些资料中甚至能看到用铜带加速如果说想用金属的高活性加速燃烧,那么应使用高目数的铝粉或
镁粉
。
用核弹做礼花
玄明
14年10个月前
发表于
极客DIY
内容:我们就玩个更夸张的呵呵俄美又达成了新的核武器削减协议,将有很多核武器被和谐……不过那样成本会比较高,所以我想,能不能由中国出面给他们免费销毁核武器(当然是允许监督的,甚至可以收费~),销毁的方法就是在核弹周围加入铁粉、铝粉、
镁粉
等烧起来好看的东西
卖便宜东西的店
大仙
15年10个月前
发表于
跳蚤市场
内容://XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/athena/offerdetail/sale/XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXml
镁粉
一种较好的固体火箭发动机的点火药的寻找与测试
Winter
5年6个月前
发表于
喷气推进
内容:试试吧以65:15:20的重量比混合硝酸钾、
镁粉
、铝粉。,我用的
镁粉
是200目,铝粉是1000目,所以磨的主要是kn,用研钵磨不费力初始喷燃比186下APCP燃料点火成功。
实验:片呐基醇及其制备
trample
15年7个月前
发表于
化学
内容:片呐基醇分子式:C6H13OH药品:丙酮、
镁粉
(最好是高纯)、氯化汞、苯、蒸馏水、浓硫酸、硼氢化钾仪器:水冷、锥瓶、抽滤装置一套、分液漏斗、酒精灯1.2mol丙酮和1mol镁在氯化汞催化、苯介质中反应后再加
有用果糖做KNDX的吗?
zooulo
16年0个月前
回复于
喷气推进
内容:引用第6楼lilith于2009-01-22 19:13发表的 :葡萄糖可以还原氧化铜,还原性较其他糖强,就像用
镁粉
很猛一样,因为镁的还原性很强,热值很高,所以,葡萄糖的KNDX燃速更快!
星火计划-试车失败分析(科创基金资助项目)
琉璃冬
8年11个月前
回复于
喷气推进
内容:况且据说楼主是使用硝化棉(而且还是高氮棉)加
镁粉
作为点火药的,从视频看到楼主的发动机连喘燃迹象没出现就炸了,很明显不是AP混合问题。
[讨论]四氧化二氮合成
小阿真
18年5个月前
发表于
化学
内容:时几乎是纯粹的二氧化氮 五,四氧化二氮的凝固点有:-9.3、-10、-11.2度C 把硝酸跟金属反应就可以产生二氧化氮 4HNO3 + Pb > Pb(NO3)2 + 2NO2 + 2H2O 这个部分如果以
镁粉
来反应
电机主要的铁心材料及其特征
公众号EV技研作者1900
5年7个月前
发表于
电动汽车
内容:为了改善磁特性劣化的状况,加工后有必要在其表面涂上氧化铝或氧化
镁粉
末作为绝缘层,并在氢气环境中进行1100℃热处理(退火)。,为了改善磁特性劣化的状况,加工后有必要在其表面涂上氧化铝或氧化
镁粉
末作为绝缘层,并在氢气环境中进行850℃热处理(退火)。
【实验记录】芸香苷的提取、精制、水解及检识
cccyl
11年4个月前
回复于
化学
内容:仪器试剂 紫外光分析仪,水泵,试管,烧杯,回流提取器,抽滤瓶,锥型瓶,层析缸,蒸发皿,布氏漏斗, 槐米,2%硫酸,0.4%硼砂溶液,石灰乳,
镁粉
,浓盐酸,1%AlCl3乙醇液,1%FeCl3
测试RNX燃烧后生成大量灰绿色残渣
HXKRRRR
6年11个月前
回复于
喷气推进
内容:不知道燃烧率怎样23333😂硝酸钾体系几乎不能氧化铝粉😫
镁粉
倒是值得一试,但是二相流损失可能超过理论比冲的增加,得不偿失……恐怕提高RNX比冲得在粘合剂上下下功夫,但我也不太清楚怎么弄,毕竟如果上含能增塑剂就失去
探讨发射小卫星的可行性及路线图问题
HXKRRRR
7年4个月前
回复于
喷气推进
内容:我觉得如果想降低成本,AN基推进剂是个不错的选择,加了
镁粉
比冲可以上220,但是就是密度差点意思,总体来说还是比KN强多了。
对百元以内发动机有关问题解释
口贝
11年5个月前
发表于
跳蚤市场
内容:[flash=640,480]%5Burl%5DXXXXXXXXXXXXXXXXXXXXXXX/XXXXXXXXXp/sid/XNTg3MTEwNTE2/v.swf%5B/url%5D[/flash]
镁粉
的使用视屏闪光
要做液体发动机了,寻找一种雾化器
black
15年4个月前
回复于
喷气推进
内容:300g燃料烧完了也飞不多高后来实验的时候发现无水乙醇+高浓度过氧化氢的效果很强大,拿已经很成熟的PPR发动机试车发现能量很强大所以最近打算试一下70%左右的双氧水+无水乙醇混点硝酸,然后在燃烧室里放一些
镁粉
和铜粉以及二氧化锰
KNSU火箭发射失败
test100
9年4个月前
回复于
喷气推进
内容:加铝粉不能完全燃烧,加
镁粉
居然还活着也是厉害。
关于KNDX的研究《转的》
zhao998522
15年6个月前
发表于
极客DIY
内容:制作时就是把Fe2O3换成铝粉,可以稍微多放点,也可以混上Fe2O3或者是
镁粉
。
【说干就干】环氧树脂闪烁体的制备与探测特性实验
已注销用户
4年11个月前
发表于
核技术与核仪器
动手实践: 实验报导
内容:首先简要介绍下我设计的几种环氧树脂闪烁探测器的制造方法(探测器为硅光电池 APD或光电倍增管)硅光电池剂量率探测器:将混合的环氧树脂溶液灌入25*25*25mm的模具中,干燥后脱模,在正方体其余五个面上涂布705硅橡胶,并均匀沾取氧化
镁粉
末作为漫反射层
257种制毒制爆化学品管制要求
ybylz
16年9个月前
发表于
化学
内容:过氧化氢、氦、环氧丙烷、环氧甲烷、环氧氯丙烷、环氧乙皖、季戊四醇、夹氮硫杂蒽、甲苯、甲醇、甲基苯、甲基苯胺、甲醛、聚甲醛、咔唑、立方烷羧酸、硫、硫化钠、硫酸、铝粉、氯苯、氯仿、氯化铵、氯酸钾、氯酸钠、
镁粉
自制空天飞机的想法
浪里黑条
6年7个月前
回复于
航空技术
内容:尤其是ANCP,性价比是其他推进剂都比不了的,在具有240+s比冲的同时还可以有不到30元/kg的低成本(同比典型的APCP成本接近200),缺点是密度低(因为AN与铝粉燃烧性能不佳,只能搭配
镁粉
,推进剂密度只有
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