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内容:引用第3楼warmonkey于2008-10-26 17:12发表的 :要加2%
石墨
粉,否则辐射热会烧化石蜡石蜡是非常有前途的燃料!
[再次更新]某的第一条固液混合发动机.[视频+多P]
warmonkey
13年11个月前
回复于
喷气推进
内容:石蜡有软化温度不同的品种,
石墨
粉防止内层石蜡被热辐射熔化。
《走近科学:碳纤维发动机》
卡特琳娜
8年9个月前
回复于
喷气推进
内容:引用 arminarlart33:碳纤维发动机,
石墨
喷口难道不好吗,没必要那这个说事吧。
疯狂切尔诺贝利游记-----bionerd23女士系列视频
RodTech
9年11个月前
发表于
核技术与核仪器
内容:典型的防护失误案例 作死之第四: 切尔诺贝利路边挖出一颗1/4米粒大,竟然有17mSv/Hr的燃料/
石墨
碎片,用高纯Ge能谱测得极高的Cs137峰,和很低的Am、Th等峰,典型切尔诺贝利状况。,点击此处查看视频 作死之第二: 闯进切尔诺贝利车辆废弃坟墓,其中有直升机、还有各国的机器人,就是这些机器人都失败了,后来才需要派出一批批(3000多)人清扫楼顶
石墨
。
纸制喷口
power_rdx
15年0个月前
回复于
喷气推进
内容:还有建议LZ在最里面那层用铅笔弄层
石墨
上去,能减慢烧灼。
(腦洞)是否能使用三維打印的PLA作為固液混合式發動機的藥柱
LTs60361
4年9个月前
回复于
极客DIY
内容:
石墨
噴嘴的料材已經在路上了,估計兩三天後到,等噴嘴加工好後會再發文。
150N石墨燃烧室气态氧-柴油辐射冷却火箭发动机的研制工作
虎哥
4年10个月前
回复于
喷气推进
科创基金
内容:要研究辐射冷却的可行性,不是应该先做传热和散热的计算吗,能量衡算完成以后如果有必要验证,不是应该搞一块
石墨
搭建一个辐射冷却的模型,然后一头加热,另一头用温度计测吗?
RNX火箭发动机(凌霄-1号)
帝江航天空间动力
10个月1天前
发表于
喷气推进
内容:在这里声明一下,很抱歉,我个人很糊涂,在定制发动机零件时,
石墨
发动机的螺纹有了部分损坏,我只好将螺纹打掉,换用其它连接方式。,1——我们的办法是把堵漏宝与水先混合,倒入发动机
石墨
喷管的凹槽中,等待凝固。
我也做了个微型轨道炮
专打贾君鹏
13年4个月前
回复于
电磁炮
内容:再弄一点
石墨
涂上去。,或者干脆就用
石墨
当轨道。,(虽然不太可能)另外,导轨不论用什么材料,都撒一些
石墨
粉在上面——免得接触不到了,就没电了。
【锂电池】电池性能由材料决定
公众号EV技研作者1900
5年5个月前
发表于
电动汽车
内容:表2(1)
石墨
类1991 年问世的第一个锂离子电池产品,负极材料使用的是短晶体结构的硬(
石墨
)①。,最近,成本更低的合成
石墨
占据了主流。
国庆活跃气氛——玩ZVS感应加热熔化金属
rudolf
10年3个月前
发表于
极客DIY
内容:先上个整体图:烧个螺母玩今天到的坩埚,到大街上捡了一块瓷砖,割几块垫在坩埚下面
石墨
坩埚和氧化铝坩埚之间垫上一圈陶瓷纤维布保温放个散热片进去能熔化铁这个让我有点惊喜,为了证明是铁只熔化了一半,可以看出螺丝钉和螺母熔合在一起
发一些老图,给各位补一补V-2导弹的基础知识(一)
火星居士
12年11个月前
回复于
喷气推进
内容:第三张:V-2的喷口特写,注意里面的18个喷注单元和位于喷口的四个
石墨
燃气舵第四张:装上运输车的V-2导弹。
75mm探空火箭研发过程
七公里垃圾站职业技术学院
9年4个月前
回复于
喷气推进
内容:看看你一下回复了多少楼 对,不锈钢喷管是没扛住,所以我重新设计了不锈钢-
石墨
复合喷管 好吧,主要是因为想法跟不上打字合看图分析速度 而且我发现如果在同一楼中间问太多问题的话,楼主有时候会只回答一个或者一部分
小渣的第一枚100J电热炮。。。炮体求鉴定。。。
轻音与二次元
9年10个月前
回复于
电磁炮
内容:电热方式就是对水和
石墨
的混合物放电啊,引起工质汽化或离子化获得推力,工质质量我想在1.2G左右
室内净化(除甲醛等)用光触媒催化剂安全性的讨论
nkh0472
3年11个月前
发表于
化学
生物学
内容:
石墨
烯的生物危害性早有报道,近期又看到了一种碳纳米管的强致癌性的报道……XXXXXXXXXXXXXXXXXXXXXXXX/s?,在家提起这个事之后,母亲说前段时间买了
石墨
烯内衣,颇有多年前听到镭疗法的感觉(只能希望这衣服里没有真的加了
石墨
烯吧)…… PPPS:自行测甲醛的办法没一个靠谱的,就算很贵的电化学传感器也测不准,这类传感器对很多气体的灵敏度比甲醛高的多
小渣的第一枚100J电热炮。。。炮体求鉴定。。。
badboy-fly
9年10个月前
回复于
电磁炮
内容:电热方式就是对水和
石墨
的混合物放电啊,引起工质汽化或离子化获得推力,工质质量我想在1.2G左右 真的无脑的话现在满街都是电热了,直接对工质放电在非高压的情况下不可靠。
转载 [家庭小实验]氢氧燃料电池的制作
拔刀斋
14年5个月前
发表于
电子技术
内容:[家庭小实验]氢氧燃料电池的制作来源:桂林中学 作者:唐艺[用品] U形管,
石墨
碳棒,分液漏斗,酒精喷灯,低压直流电源,30%的氢氧化钾溶液(或30%的稀硫酸),橡皮塞(双孔),导线等.,负极 2H2 + 4OH-- 4e = 4H2O 正极 O2 + 2H2O + 4e = 4OH- 总反应 2H2 + O2 = 2H2O[操作] 1.多孔碳棒的加工 将
石墨
碳棒放到酒精喷灯上加热除去其中的胶质
(腦洞)是否能使用三維打印的PLA作為固液混合式發動機的藥柱
LTs60361
4年7个月前
回复于
极客DIY
内容:燃燒試驗機預計使用碳纖管加上
石墨
噴嘴,燃料會實驗的有PLA(內孔不同形狀)、PLA外框加山梨醇和鋁粉、PLA網格加石蠟。
【提问】大家觉得把自热米饭实现个人化生产的市场怎样
0x00000000
3年10个月前
回复于
极客DIY
内容:自热米饭图的就是方便,难不成你还要自己先炒菜然后真空包装做料理包;用氧化钙,铝粉,
石墨
,氯化钠做发热包;用电饭煲煮熟米饭再设法脱水做米包吗?
电解氯酸盐或氯化物溶液时用什么电极比较合适
HXKRRRR
6年11个月前
发表于
化学
内容:
石墨
完全不行。
凌霄-1号固体火箭发动机
帝江航天空间动力
10个月0天前
发表于
喷气推进
内容:在这里声明一下,很抱歉,我个人很糊涂,在定制发动机零件时,
石墨
发动机的螺纹有了部分损坏,我只好将螺纹打掉,换用其它连接方式。,1——我们的办法是把堵漏宝与水先混合,倒入发动机
石墨
喷管的凹槽中,等待凝固。
重新制作的1500W感应加热
slof
14年3个月前
回复于
电子技术
内容:所以包括铜铝,甚至
石墨
都能够被加热的原因。
回 4楼(10班陈大葱22号) 的帖子
拔刀斋
12年7个月前
回复于
喷气推进
内容:祝贺75RNX发动机试车成功,
石墨
喷管试验成功。
自制金属发动机,萌新求教
XZH100
2年4个月前
回复于
喷气推进
内容:有几个问题:在里面加入环氧树脂与氧化铅的混合物1.不应该是氧化铝吗,氧化铅可是很毒的2.金属发动机为什么用pvc管做的喷口和堵头,其实用电木车一个再加
石墨
或不锈钢衬喉效果会非常好XXXXsb其实不用加氧化铁就很不错了
请各位大佬帮忙看看这个拉瓦尔喷管有没有什么设计上的问题
偊浪_Rykii
1年11个月前
回复于
喷气推进
内容:但会比较重,上箭的话可以考虑酚醛、
石墨
或树脂/石膏浇筑4、铝合金应该可以胜任。
腐蚀电路板哪个材料叫什么
hamdad
15年9个月前
回复于
电子技术
内容:腐蚀反应:2FeCl3+Cu=2FeCl2+CuCl2
石墨
电极电解再生反应:阳极:2FeCl2-2e=2FeCl3阴极:CuCl2+2e=Cu↓适当的浓度,适当的温度,适当的PH值(必须用适量的HCl调节
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