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回复于
喷气推进
内容:引用 蓬莱的鹰:我试过这个,效果不太明显,一般来说我们发射会用发射架,自旋控制会导致箭架间导向机构的作用力,会减慢出架速度,更不利于
稳定。
,典型的自旋稳定是107mm火箭炮炮弹,可是人家是用的是燃气涡轮自旋稳定的。
放射性同位素电池
evangil
12年9个月前
回复于
电气电工
内容:同位素温差发电啊,最早的旅行者1号2号上的就是这个,已经稳定发电30几年了。。。。
啤酒稳定器
jrcsh
12年10个月前
回复于
机械与工具
内容:我记得你是作了一个 图象稳定器的~~~
糊精-碘化钾氧化性测试试纸和常见氧化剂的测试
ne555
9年9个月前
回复于
化学
内容:因为稳定性较高,不易形成过渡态,而较浓的硝酸和亚硝酸的稳定性差,会反应高氯酸的应该也是这个原因
探究水相制备CsIBr2的可行性
2SC1970
2年3个月前
发表于
化学
科创基金
内容:由于KIBr2不够稳定,因此选取Cs+作为阳离子。
再现神级窜天候!!
power_rdx
15年0个月前
回复于
喷气推进
内容:同时发现起飞轨迹不稳定,建议还是使用尾翼稳定,以避免发生某些你不愿意看到的事情
实图对比: CAD的预测 和 实际相符吗?
FROZEN巨擘
9年10个月前
回复于
喷气推进
内容:一般重心越低稳定性越好,但火箭飞行重心越偏上稳定性越好 谢了 原来是这样!!
燃料测试机第一次试车(外加PVC发动机图片)
Cast_Snow
3年11个月前
回复于
喷气推进
内容:knsb有些小问题,燃烧为什么不稳定呢,建议热熔前将kn彻底粉化,熔化后要混合均匀,装机时尽量充分填充发动机,这样可以提升燃料稳定性
自制个飞机,希望朋友们能提供些技术支持
飞线大师
9年10个月前
回复于
航空技术
内容:还有最好有电子稳定系统,以及操作系统一定要可靠。
线圈炮低压方案研究&实验数据
vcasm
11年5个月前
回复于
电磁炮
内容:经过多次实验证明只要弹体未加速前的位置固定,相同的参数运行,在线圈温升不大的情况下能保证稳定的出口速度。,低压电源也需要稳定,试验中用万用表测量的电压做基准,发现单级发射稳定,但是级多了出口速度很不稳定,后来用单片机做低压逆变严格控制27.2V,出口弹速相对前面要稳定很多。
能力考验之改错题测试:使用液态氢是美国人登月造假的证据
hchc0834
10年2个月前
回复于
喷气推进
内容:现在在这所讨论的各种配方都是民用..国家用的都不是这些配方..简单..只要是国家级的科技..都要有几点考虑..效率.耐用...稳定..尤其是稳定..就现在所发射的火箭..里面的计算机的计算能力都没的我们的笔记本能力强,..但是他们主要就是应对各种恶劣条件下还能稳定工作..还是长时间的工作..就火箭发动机主要就是耐高温.高压.耐腐蚀..等等都是要稳定的工作..至于作为燃烧的介质..比冲越高越高.至于液氢和液氧的高精度混合,都是各种物质的混合达到的高能物质..具体配方就不是我们能掌握的..还有就是掌握了我们也做不到国家这么稳定的输出能量..简单点来说..国家用的固体火箭燃料...我们用完全就是1个炸弹...
回 18楼(sndnvaps) 的帖子
asdw_15951
12年9个月前
回复于
软件综合
内容:呵呵,谢谢指点……动态数据库比较不稳定……先调试一下啊
200w半闭环升压器
七夜
7年11个月前
发表于
电气电工
内容:驱动板特写电压很稳定再也不怕电容过压了整体感谢居士的无私分享。
注入锁频(注入锁相)磁控管微波源的原理和实验
BG7TBL
5年0个月前
回复于
EMP和强微波
内容:这个关键在于启动状态研究,同步后还算比较
稳定。
验证科立水爆炸实验
pankewen
14年9个月前
发表于
电子技术
内容:同志们要是有稳定的低频大功率正弦波震荡器不仿发个……我还在用三圾管震荡……个人不太相信这个水爆炸
几种磁阻炮的弹丸稳定方案
高颖
8年6个月前
回复于
电磁炮
内容:这几天做了一个弹丸稳定装置,但是效果并不理想,电机没分钟5000转,单有轴承的阻力估计也就300转,弹丸十米之内不偏转,再远了就会不稳定,弹丸4mm标准定位销,管子不标准,4.3mm,估计和管子的内径有关
关于栅格尾翼压心计算的理论与实践[略理论向]
鬼灯哥
12年6个月前
回复于
喷气推进
内容:这样算的话压心好像会与重心太过靠近,对于无导向杆的发射架来说不需要太大的初速度便可稳定起飞,但是后程会较不稳定,视频中也确实是如此,在无推力阶段是S形的.......
新闻:美国批准氦气球游太空 需花费7.5万美元
1996615xp
11年2个月前
回复于
航空技术
内容:radio 发表于 2013-11-13 19:32 容易爆如果可以研制出一种氢气稳定剂,相信氢气球载人会变成事实,呵呵
新结构极大涵道比的涡扇发动机设想。
samhrc
13年10个月前
回复于
极客DIY
内容:现在的高压压气机都是可调静子以稳定工作范围,这个思路的话,稳定静子只有靠本身的气动耦合了 有静叶的,俺没画。
KC908频谱仪软件缺陷/功能意见征集(BUG报告帖)
虎哥
3年0个月前
回复于
仪器仪表
内容:经过检查,发现CPU板正常,是射频组件硬件问题,在高温下通信不稳定,失锁,更换射频模组后恢复正常。
热解石墨磁悬浮
chenluois
10年8个月前
发表于
极客DIY
内容:不像超导那样需要液氮营造的超低温环境下才能悬浮,热解石墨在常温下即可实现稳定磁悬浮: [media=x,750,456]XXXXXXXXXXXXXXXXXX/v_show/id_XNjk1Njc2Mjc2
发一个可控硅变换器
真水无香8889
12年10个月前
发表于
高电压技术
内容:如果不要求频率稳定,图中可以把R3,R8,稳压管去掉
回 68楼(量子隧道) 的帖子
古人
12年4个月前
回复于
会员海报
内容:那截线大概3cm,这个板子已证实有很大问题,不能稳定工作在1.8GHz以上,计划下次重新进行设计。
讨论一下用航模涵道电机做火箭的可行性
Currying
9年10个月前
回复于
航空技术
内容:GPS开伞这个问题吧,咱们先抛开航电仓结构不谈,就说稳定性。,何来不稳定?,(真心请教下您说的不稳定是什么意思?,在什么方面不稳定呢) 反观气压计,(那个帖子你也看了,我说的两种判定条件你也应该清楚,第一种太不靠谱就不提了)开伞的条件设置和GPS差不多啊,前后气压差为正呗。
KC901J/K/R软件缺陷报告跟踪帖
FU106Z
7个月25天前
回复于
仪器仪表
内容:固件版本V0.0.30,频谱模式下使用面板的编码器调整参考电平数秒后死机,可以稳定复现
国外牛人自制网分校准件
happyab
7年3个月前
回复于
仪器仪表
内容:个人看法:不要用这种电阻改用高稳定度金属膜,例外器件必须抽真空,减少寄生电容!
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