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喷气推进
科创基金
内容::液氧——煤油 4.挤压压降:1MPa5.工作方式:挤压式6.点火方式:点火药盒发动机模型:亮黄色为发动机头部,由整块304不锈钢车削制成,与推力室的连接方式是焊接;褐色和黑色为烧蚀材料,分别是酚醛和
石墨
燃料电池系列之二——通气式燃料电池的搭建
火星居士
10年10个月前
发表于
化学
内容:电极
石墨
棒还是太致密,难以获得高效率。
[Project MBR]一些数据和部分制作过程
侧卫007
14年0个月前
发表于
喷气推进
内容:喷嘴为
石墨
削制,孔径2mm,膨胀率取4~6,形状因为没有车床只能手工加工而有偏差。
30元以内,低成本金属固体发动机方案介绍
猎鹰
5年6个月前
发表于
喷气推进
内容:如果工作时间较长请直接选择
石墨
喉部。 ,(简单加工的喷管
石墨
喉部喷管 低重量堵头
龙吟一号固体探空火箭设计与制作
就是氧化铁喽
7个月27天前
发表于
喷气推进
动手实践: 实验报导
内容:壳体使用6061铝合金材料,使用酚醛衬层,
石墨
喷管,堵头材料采用h13钢,六颗径向机米螺丝,隔热层采用两毫米牛皮纸管,推进剂采用knsb,设计参数看以下图片可压缩模型仿真渲染图这个仿真是在过程中截的,具体视频丢失
[原创] 工业电解的一些基本知识——业余情况下电解制备化学品需要注意的问题
TBsoft
7年6个月前
回复于
化学
内容:目前氯碱工业确实都在使用DSA电极作为阳极,也就是钛合金表面形成RuO2、TiO2等涂层的电极,寿命比
石墨
阳极长得多。
陈嘉庚青少年发明奖一等奖,奖设立九年来,第八次出现一等奖空缺
大名
12年11个月前
回复于
极客DIY
内容:第九届陈嘉庚青少年发明奖(上海)获奖作品名单 公开组 序号 获奖等级 作品名称 学校 发明人1 二等奖
石墨
烯超级电容器
[分享]编程天才+业余液体火箭制造者——John Carmack
大号是中华
17年0个月前
回复于
喷气推进
内容:电解法是20世纪前半期生产双氧水的主要方法,该法是以Pt为阳极,铅或
石墨
为阴极,将饱和硫酸氢铵溶液电解成过硫酸铵,再用稀硫酸水解得到双氧水。
来了!超省钱的氯酸盐电解制取
高压谭姆斯
3年10个月前
发表于
化学
内容:mmo电极其他大佬已经有许多的介绍,不懂得可以百度 大小越大越好,其耐腐蚀性能极强,寿命可达秦朝那么长不要
石墨
电极(掉渣到你怀疑人生)不要二氧化铅(市售价格跟mmo一样价格效率远差于mmo,自制不可能)
火箭
德阳李
14年10个月前
发表于
喷气推进
内容:随着分导式弹头和机动式弹头的发展,再入时间增长,不均匀烧蚀的情况加剧,同时为抵抗粒子云侵蚀和核攻击,遂研制出
石墨
纤维三向或多向增强的碳材料和具有高应变性能的
石墨
材料。,燃气舵受到喷焰的高速冲刷,烧蚀严重,故多采用特种
石墨
或钨、钼等难熔金属制作,表面再覆以抗氧化涂层。,③烧蚀冷却式燃烧室的内壁用高硅氧纤维增强树脂作烧蚀材料,外部用钛合金作承力壳体,喉部装有
石墨
镶块以增强耐烧蚀能力。,最新式的发动机喷管喉部采用热解
石墨
、碳纤维增强碳材料作喉衬,提高了抗烧蚀性能。
详解固体火箭发动机(转帖)
空中米格
16年0个月前
发表于
喷气推进
内容:从50年代末美国北极星A2潜射导弹第二级发动机壳体使用第一代复合材料玻璃钢开始,固体发动机壳体使用的复合材料经过如下演变过程:玻璃纤维(即玻璃钢)/环氧树脂→芳纶(包括凯芙拉)纤维/环氧树脂→碳纤维(
石墨
,早期的固体发动机喷管是多段多层多种材料构成的积木式喷管,喉衬采用金属(如钨合金)和热解
石墨
烧蚀材料,承力构件使用钢或铝合金,非常笨重。,“三叉戟C4”发动机喷管喉衬为热解
石墨
,外壳为铝合金;出口锥结构件为
石墨
/环氧材料,内壁烧蚀层为碳布/酚醛。,“和平卫士”MX第一级喷管采用整体式三向碳/碳材料;第二级的入口段和喉衬为三向碳/碳编织物整体构件,由包覆碳/酚醛绝热层的钢构件支撑;出口锥烧蚀层为碳/酚醛带;第三级喷管的主承力结构为铝合金,入口段由
石墨
离心式喷注器设计试制及采用该喷注器的微型液氧煤油发动机的设计与试验报告
琉璃冬
5年3个月前
回复于
喷气推进
内容:此次发动机跟之前的500N常温组元发动机一样,正在结构上没有什么创新的地方——采用隔热层和
石墨
作为发动机的热防护处理(因为此次实验只是为了验证喷注器是否能够让发动机正常工作)。
F的父亲
hamdad
16年0个月前
回复于
化学
内容:他试图建立一种模拟天然金刚石形成的条件,将
石墨
和无定形碳转化为金刚石。,莫瓦桑以铁为介质模拟必须的环境,他用
石墨
坩锅将金属铁加热熔融,在此过程中铁被碳饱和,随即迅速将熔融的铁液倒入水中冷却,由于含碳的铁在凝固过程中会发生膨胀,铁块的内部压强会迅速上升,从而模拟出一种高温高压的环境
引用:战略导弹固体火箭发动机。纯手工排版过来的,累死我了
蛋蛋个蛋蛋
12年5个月前
发表于
喷气推进
内容:从50年代末美国北极星A2潜射导弹第二级发动机壳体使用第一代复合材料玻璃钢开始,固体发动机壳体使用的复合材料经过如下演变过程:玻璃纤维(即玻璃钢)/环氧树脂→芳纶(包括凯芙拉)纤维/环氧树脂→碳纤维(
石墨
,早期的固体发动机喷管是多段多层多种材料构成的积木式喷管,喉衬采用金属(如钨合金)和热解
石墨
烧蚀材料,承力构件使用钢或铝合金,非常笨重。,“三叉戟C4”发动机喷管喉衬为热解
石墨
,外壳为铝合金;出口锥结构件为
石墨
/环氧材料,内壁烧蚀层为碳布/酚醛。,“和平卫士”MX第一级喷管采用整体式三向碳/碳材料;第二级的入口段和喉衬为三向碳/碳编织物整体构件,由包覆碳/酚醛绝热层的钢构件支撑;出口锥烧蚀层为碳/酚醛带;第三级喷管的主承力结构为铝合金,入口段由
石墨
相变散热材料及其在电磁枪中的应用前景
三水合番
6年8个月前
发表于
电磁炮
严肃内容: 专著/论述
内容:散热功率上,有机相变材料如石蜡,导热率约为0.2W/(m*K),无机相变材料如三水合醋酸钠,导热率约为1W/(m*K),通过添加部分高导热率材料如膨胀
石墨
,可以大幅度提高相变材料的导热率到几至十几W/(
【译文】WXPR-1手持式电磁轨道炮原文原创翻译
celeron533
9年2个月前
回复于
电磁炮
内容:点击查看原图 发射
石墨
弹丸,1100V,1.8KJ 点击查看原图 发射铝弹丸,1100V,1.8KJ 点击查看原图 轨道炮使用6个300J储能的电容器,单个350V,5500uF它们一共重约,点击查看原图 轨道炮能发射铜镀钨、铝、
石墨
、和使用等离子电枢的聚四氟乙烯弹丸,这里我们有钨骨架镀铜(钨渗铜)的弹丸。
实用金属表面处理技术
全能杀手
17年6个月前
回复于
化学
内容:有时不析氢少析氢的场合也会发黑,例如镀铜时.除镀铬外,搅拌可加速沉积.铬吸氢较大,质量分数约0.5%,其次为铁组金属约0.1%,锌的程度较小,约0.001-0.01%.铸造的生铁零件表面凹凸不平多孔,当中
石墨
降低氢超
【火箭技术板块资源索引】
小哈_abc
10年11个月前
发表于
喷气推进
内容:XXXXXXXXXXXXXXXX/t/46237 (出处: 科创论坛) 【廣局神作】RNX-HTPB星孔燃料系列 XXXXXXXXXXXXXXXXXXXXXXXX/t/43369 (出处: 科创论坛) 【廣局神作】
石墨
喷喉
[原创] 关于电化学、原电池等的一些基本知识
TBsoft
9年9个月前
发表于
化学
内容:但实际上,普通干电池中的碳棒是惰性电极,并没有参与电极反应,普通干电池的结构是碳棒外面包裹着二氧化锰和碳粉(
石墨
粉和乙炔黑)的混合物,形成一个“电芯”,然后将其插入锌筒中,“电芯”和锌筒之间是以氯化铵为主要成分的电解液
真空器件制造工艺概要
虎哥
7年5个月前
发表于
电子技术
内容:还有的零件须预先涂敷特殊涂层,如微波管内用的衰减器可用碳化、
石墨
喷涂或真空蒸发、溅射等方法涂敷一层高频衰减材料。,有的管型需预先在三种色粉之间的位置涂以
石墨
黑底。
ABC微型火箭技术-为初学者设计的快速制作技术
ABC
16年5个月前
发表于
喷气推进
内容:一般需要6个3-4MM螺母,用长螺丝串起来.农机胶要涂多些,这样才能充满螺母与纸管的间隙 卷好喷管后,将螺丝拧出 完成的螺母喷管 办法还有,比如电池里面的
石墨
条,可以钻孔后尝试制作芯管.其它一切合适的材料
电池
123123123
14年5个月前
发表于
电子技术
内容:其电压依赖于不同的电化学分别为:1.2V,1.35V,1.4V,1.5V,1.55V.它们因为外观相似而被称为纽扣电池.锌锰干电池锌锰干电池是最常见的化学电源.干电池的外壳(锌)是负极,中间的碳棒是正极,在碳棒的周围是细密的
石墨
和去极化剂
固体火箭入门简介
novakon
8年8个月前
发表于
喷气推进
内容:喷管材料选择众多,常见以硅(水泥)、碳(
石墨
)、铝(刚玉)、钢为主。
燃料电池系列之三——氢氧燃料电池功率影响因素的研究
火星居士
10年9个月前
发表于
化学
内容:(四)催化剂 笔者在有铂催化剂的情况下进行了第一次放电实验,而后再将催化剂拆下,只用多孔
石墨
电极进行实验,如下图 拆下铂催化剂的燃料电池 放电数据比较 结果是明显的,有和没有催化剂的电池表现差距很大
<科研萌新>近代物理发展史mewo~~
王智壹
6年5个月前
发表于
物理
内容:55、1922年,美国物理学家康普顿在研究
石墨
中的电子对X射线的散射时——康普顿效应,证实了光的粒子性。
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