超级军网NASA成功测试微波推进器
来源：百度文库 编辑：超级军网 时间：2024/04/27 21:05:00
不用化学燃料的引擎或将改变航空业未来
来源:cnBeta 作者:KungfuDogg
量子真空虚拟等离子体推进器，俗称Q-thruster听上去很像是科幻故事中出现的产物。事实上它已经被做出来了，如下图这枚EmDrive引擎被两组 独立的不同研制团队开发测试，目前已经通过美国航天署NASA的认证。这枚引擎最大的特点就是不需要借助化学燃料。听上去似乎违反了已知的推进加速器设计基础甚至牛顿运动定律-火箭推进器必须要燃烧化学燃料才能推进。
目前想要在太空中行进,携带足够的燃料是不可能的。但一个方法能够让未来航天器到达目的地，通过利用微波推进器，这是一位名叫RogerShawyer的英国科学家发明的一个引擎，被称为 EmDrive，几年前,中国也完成了一款类似的设备,世界其他地方没有注意到，本周早些时候美国航空航天局再演示过程中已经确认该设备可以正常工作。通过密闭容器内的微波,提取巨大动力。尽管美国宇航局测试的模型几乎没有能够移动大的对象,但这是非常有前景的，如果该机构能显着扩大该设备,它可用于任何东西,从卫星推进到火星飞船，都可以获得收益。
这枚引擎的推进加速原理是什么呢？据外媒报道，该推进器利用的是微波，从太阳能或其他形式能量中的电子产生的微波，[据维基百科]EmDrive 的实质其实只是一个微波共振空腔（microwave resonating cavity），而形状则是一个密封的缺顶圆锥体。你启动这个电动的微波产生器，随即它就开始在椎体内发射微波，微波在这个密闭空间内被反复地反弹。
最初离子推进器最早于2009年由中国科学家团队完成并测试，这项技术的基本操作原理最早是由一个名叫 Roger Shawyer 的英国人在好几十年前提出。最近由美国科学家Guido Fetta独立于中国团队另行开发了这款称为EmDrive的引擎。由于它利用的是取之不竭的太阳能，故而能在太空无重力状态下连续运转几年时间。缺点是推力和加速度都很小，要使航天器达到预定的飞行速度，用时很长。虽然如此，但是这项研究结果的真正意义在于：基于一种理论，由两组不同的研究团队互相独立研制，开发出的成品很大程度上印证了这种理论的可行性，相信随着进一步开发，应用这种原理的引擎能够改变航空业的未来。
转自http://www.cnbeta.com/articles/315667.htm http://ntrs.nasa.gov/search.jsp?R=20140006052
不用化学燃料的引擎或将改变航空业未来
来源:cnBeta 作者:KungfuDogg
量子真空虚拟等离子体推进器，俗称Q-thruster听上去很像是科幻故事中出现的产物。事实上它已经被做出来了，如下图这枚EmDrive引擎被两组 独立的不同研制团队开发测试，目前已经通过美国航天署NASA的认证。这枚引擎最大的特点就是不需要借助化学燃料。听上去似乎违反了已知的推进加速器设计基础甚至牛顿运动定律-火箭推进器必须要燃烧化学燃料才能推进。
目前想要在太空中行进,携带足够的燃料是不可能的。但一个方法能够让未来航天器到达目的地，通过利用微波推进器，这是一位名叫RogerShawyer的英国科学家发明的一个引擎，被称为 EmDrive，几年前,中国也完成了一款类似的设备,世界其他地方没有注意到，本周早些时候美国航空航天局再演示过程中已经确认该设备可以正常工作。通过密闭容器内的微波,提取巨大动力。尽管美国宇航局测试的模型几乎没有能够移动大的对象,但这是非常有前景的，如果该机构能显着扩大该设备,它可用于任何东西,从卫星推进到火星飞船，都可以获得收益。
这枚引擎的推进加速原理是什么呢？据外媒报道，该推进器利用的是微波，从太阳能或其他形式能量中的电子产生的微波，[据维基百科]EmDrive 的实质其实只是一个微波共振空腔（microwave resonating cavity），而形状则是一个密封的缺顶圆锥体。你启动这个电动的微波产生器，随即它就开始在椎体内发射微波，微波在这个密闭空间内被反复地反弹。
最初离子推进器最早于2009年由中国科学家团队完成并测试，这项技术的基本操作原理最早是由一个名叫 Roger Shawyer 的英国人在好几十年前提出。最近由美国科学家Guido Fetta独立于中国团队另行开发了这款称为EmDrive的引擎。由于它利用的是取之不竭的太阳能，故而能在太空无重力状态下连续运转几年时间。缺点是推力和加速度都很小，要使航天器达到预定的飞行速度，用时很长。虽然如此，但是这项研究结果的真正意义在于：基于一种理论，由两组不同的研究团队互相独立研制，开发出的成品很大程度上印证了这种理论的可行性，相信随着进一步开发，应用这种原理的引擎能够改变航空业的未来。
转自http://www.cnbeta.com/articles/315667.htm http://ntrs.nasa.gov/search.jsp?R=20140006052
篡改内容，请问楼主最后一段是你脑补出来的吧，原文里哪里有？
链接打不开
第八炮兵 发表于 2014-8-3 16:35
篡改内容，请问楼主最后一段是你脑补出来的吧，原文里哪里有？
链接是NASA官网的英文全文资料 还可以看看这里 http://sploid.gizmodo.com/nasa-r ... m_medium=socialflow
第八炮兵 发表于 2014-8-3 16:35
篡改内容，请问楼主最后一段是你脑补出来的吧，原文里哪里有？
链接是NASA官网的英文全文资料 还可以看看这里 http://sploid.gizmodo.com/nasa-r ... m_medium=socialflow
纸飞机 发表于 2014-8-3 16:42
链接打不开
翻墙打开后内容也不对，楼主篡改内容自行添加东西，这违规了吧。
链接打不开
翻墙打开后内容也不对，楼主篡改内容自行添加东西，这违规了吧。
第八炮兵 发表于 2014-8-3 16:51
翻墙打开后内容也不对，楼主篡改内容自行添加东西，这违规了吧。
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
翻墙打开后内容也不对，楼主篡改内容自行添加东西，这违规了吧。
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
纸飞机 发表于 2014-8-3 16:54
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
Anomalous Thrust Production from an RF Test Device Measured on a Low-Thrust Torsion Pendulum
NTRS Full-Text: Click to View [PDF Size: 11 KB]
Author and Affiliation:
Brady, David (NASA Johnson Space Center, Houston, TX, United States);
White, Harold G. (NASA Johnson Space Center, Houston, TX, United States);
March, Paul (NASA Johnson Space Center, Houston, TX, United States);
Lawrence, James T. (NASA Johnson Space Center, Houston, TX, United States);
Davies, Frank J. (NASA Johnson Space Center, Houston, TX, United States)
Abstract: This paper describes the eight-day August 2013 test campaign designed to investigate and demonstrate viability of using classical magnetoplasmadynamics to obtain a propulsive momentum transfer via the quantum vacuum virtual plasma. This paper will not address the physics of the quantum vacuum plasma thruster, but instead will describe the test integration, test operations, and the results obtained from the test campaign. Approximately 30-50 micro-Newtons of thrust were recorded from an electric propulsion test article consisting primarily of a radio frequency (RF) resonant cavity excited at approximately 935 megahertz. Testing was performed on a low-thrust torsion pendulum that is capable of detecting force at a single-digit micronewton level, within a stainless steel vacuum chamber with the door closed but at ambient atmospheric pressure. Several different test configurations were used, including two different test articles as well as a reversal of the test article orientation. In addition, the test article was replaced by an RF load to verify that the force was not being generated by effects not associated with the test article. The two test articles were designed by Cannae LLC of Doylestown, Pennsylvania. The torsion pendulum was designed, built, and operated by Eagleworks Laboratories at the NASA Johnson Space Center of Houston, Texas. Approximately six days of test integration were required, followed by two days of test operations, during which, technical issues were discovered and resolved. Integration of the two test articles and their supporting equipment was performed in an iterative fashion between the test bench and the vacuum chamber. In other words, the test article was tested on the bench, then moved to the chamber, then moved back as needed to resolve issues. Manual frequency control was required throughout the test. Thrust was observed on both test articles, even though one of the test articles was designed with the expectation that it would not produce thrust. Specifically, one test article contained internal physical modifications that were designed to produce thrust, while the other did not (with the latter being referred to as the "null" test article). Test data gathered includes torsion pendulum displacement measurements which are used to calculate generated force, still imagery in the visible spectrum to document the physical configuration, still imagery in the infrared spectrum to characterize the thermal environment, and video imagery. Post-test data includes static and animated graphics produced during RF resonant cavity characterization using the COMSOL Multiphysics® software application. Excerpts from all of the above are included and discussed in this paper. Lessons learned from test integration and operations include identification of the need to replace manual control of the resonant cavity target frequency with an automated frequency control capability. Future test plans include the development of an automatic frequency control circuit. Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma. Future test plans include independent verification and validation at other test facilities.
Publication Date: Jul 28, 2014
Document ID:
20140006052 (Acquired Jun 03, 2014)
Subject Category: MECHANICAL ENGINEERING
Report/Patent Number: JSC-CN-30345
Document Type: Conference Paper
Meeting Information: AIAA/ASME/SAE/ASEE Joint Propulsion Conference; 50th; 28-30 Jul. 2014; Cleveland, OH; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Washington, DC, United States
American Society of Mechanical Engineers; Naperville, IL, United States
Society of Automotive Engineers, Inc.; Warrendale, PA, United States
American Society for Electrical Engineers; United States
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ANOMALIES; CAVITY RESONATORS; LESSONS LEARNED; LOADS (FORCES); LOW THRUST; MAGNETOPLASMADYNAMICS; MOMENTUM TRANSFER; PENDULUMS; PROPULSIVE EFFICIENCY; RADIO FREQUENCIES; THRUST AUGMENTATION; TORSION; VACUUM CHAMBERS; VACUUM TESTS
Availability Notes: Abstract Only
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
Anomalous Thrust Production from an RF Test Device Measured on a Low-Thrust Torsion Pendulum
NTRS Full-Text: Click to View [PDF Size: 11 KB]
Author and Affiliation:
Brady, David (NASA Johnson Space Center, Houston, TX, United States);
White, Harold G. (NASA Johnson Space Center, Houston, TX, United States);
March, Paul (NASA Johnson Space Center, Houston, TX, United States);
Lawrence, James T. (NASA Johnson Space Center, Houston, TX, United States);
Davies, Frank J. (NASA Johnson Space Center, Houston, TX, United States)
Abstract: This paper describes the eight-day August 2013 test campaign designed to investigate and demonstrate viability of using classical magnetoplasmadynamics to obtain a propulsive momentum transfer via the quantum vacuum virtual plasma. This paper will not address the physics of the quantum vacuum plasma thruster, but instead will describe the test integration, test operations, and the results obtained from the test campaign. Approximately 30-50 micro-Newtons of thrust were recorded from an electric propulsion test article consisting primarily of a radio frequency (RF) resonant cavity excited at approximately 935 megahertz. Testing was performed on a low-thrust torsion pendulum that is capable of detecting force at a single-digit micronewton level, within a stainless steel vacuum chamber with the door closed but at ambient atmospheric pressure. Several different test configurations were used, including two different test articles as well as a reversal of the test article orientation. In addition, the test article was replaced by an RF load to verify that the force was not being generated by effects not associated with the test article. The two test articles were designed by Cannae LLC of Doylestown, Pennsylvania. The torsion pendulum was designed, built, and operated by Eagleworks Laboratories at the NASA Johnson Space Center of Houston, Texas. Approximately six days of test integration were required, followed by two days of test operations, during which, technical issues were discovered and resolved. Integration of the two test articles and their supporting equipment was performed in an iterative fashion between the test bench and the vacuum chamber. In other words, the test article was tested on the bench, then moved to the chamber, then moved back as needed to resolve issues. Manual frequency control was required throughout the test. Thrust was observed on both test articles, even though one of the test articles was designed with the expectation that it would not produce thrust. Specifically, one test article contained internal physical modifications that were designed to produce thrust, while the other did not (with the latter being referred to as the "null" test article). Test data gathered includes torsion pendulum displacement measurements which are used to calculate generated force, still imagery in the visible spectrum to document the physical configuration, still imagery in the infrared spectrum to characterize the thermal environment, and video imagery. Post-test data includes static and animated graphics produced during RF resonant cavity characterization using the COMSOL Multiphysics® software application. Excerpts from all of the above are included and discussed in this paper. Lessons learned from test integration and operations include identification of the need to replace manual control of the resonant cavity target frequency with an automated frequency control capability. Future test plans include the development of an automatic frequency control circuit. Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma. Future test plans include independent verification and validation at other test facilities.
Publication Date: Jul 28, 2014
Document ID:
20140006052 (Acquired Jun 03, 2014)
Subject Category: MECHANICAL ENGINEERING
Report/Patent Number: JSC-CN-30345
Document Type: Conference Paper
Meeting Information: AIAA/ASME/SAE/ASEE Joint Propulsion Conference; 50th; 28-30 Jul. 2014; Cleveland, OH; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Washington, DC, United States
American Society of Mechanical Engineers; Naperville, IL, United States
Society of Automotive Engineers, Inc.; Warrendale, PA, United States
American Society for Electrical Engineers; United States
Financial Sponsor: NASA Johnson Space Center; Houston, TX, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ANOMALIES; CAVITY RESONATORS; LESSONS LEARNED; LOADS (FORCES); LOW THRUST; MAGNETOPLASMADYNAMICS; MOMENTUM TRANSFER; PENDULUMS; PROPULSIVE EFFICIENCY; RADIO FREQUENCIES; THRUST AUGMENTATION; TORSION; VACUUM CHAMBERS; VACUUM TESTS
Availability Notes: Abstract Only
纸飞机 发表于 2014-8-3 16:54
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
呵呵 有兴趣就去看原文资料 违不违规我不管 NASA网站可以打开不用翻墙 只是很慢而已 抓紧时间哦 帖子没了就没了
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
呵呵 有兴趣就去看原文资料 违不违规我不管 NASA网站可以打开不用翻墙 只是很慢而已 抓紧时间哦 帖子没了就没了
美国人采用很小的介质谐振腔，馈入900MHZ低功率微波，考虑到腔体储能、Q值远比大型金属谐振腔小，加之功率也低，推力值有几十微牛算不错了，但是实验装置结构远比SPR与西工大的简单得多。
这就是西工大的那个无工质推进器的同类？
这玩意真的可行？{:soso_e132:}
这就是西工大的那个无工质推进器的同类？
这玩意真的可行？{:soso_e132:}
氘灯 发表于 2014-8-3 17:33
这就是西工大的那个无工质推进器的同类？
这玩意真的可行？
就是同类，封闭谐振腔体耦合微波。NASA两个实验组还是很谨慎的，实验测试都已一年了才公布消息。
氘灯 发表于 2014-8-3 17:33
这就是西工大的那个无工质推进器的同类？
这玩意真的可行？
就是同类，封闭谐振腔体耦合微波。NASA两个实验组还是很谨慎的，实验测试都已一年了才公布消息。
纸飞机 发表于 2014-8-3 16:54
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
后面贴出了楼主的链接英文原文，和楼主给的中文相差太大，明显违规。
如果属实确实是违规，但现在还是等其他能打开这链接的版主决定吧
后面贴出了楼主的链接英文原文，和楼主给的中文相差太大，明显违规。
第八炮兵 发表于 2014-8-3 17:52
后面贴出了楼主的链接英文原文，和楼主给的中文相差太大，明显违规。
可能误会了吧，要不你帮忙翻译一下，方便大家都看看。
我看了下，确实是这个问题，不过这是原来转过来的帖子本身的毛病，很多内容大概是原帖脑补的。
不过英文链接上的东西，还是不错的。
第八炮兵 发表于 2014-8-3 17:52
后面贴出了楼主的链接英文原文，和楼主给的中文相差太大，明显违规。
可能误会了吧，要不你帮忙翻译一下，方便大家都看看。
我看了下，确实是这个问题，不过这是原来转过来的帖子本身的毛病，很多内容大概是原帖脑补的。
不过英文链接上的东西，还是不错的。
oyzw 发表于 2014-8-3 17:06
呵呵 有兴趣就去看原文资料 违不违规我不管 NASA网站可以打开不用翻墙 只是很慢而已 抓紧时间哦 ...
你别改啊，不心虚改啥内容呢？
呵呵 有兴趣就去看原文资料 违不违规我不管 NASA网站可以打开不用翻墙 只是很慢而已 抓紧时间哦 ...
你别改啊，不心虚改啥内容呢？
你别改啊，不心虚改啥内容呢？
你找到心虚的内容了？我有必要吗？
你找到心虚的内容了？我有必要吗？
可能误会了吧，要不你帮忙翻译一下，方便大家都看看。
我一般是先机械翻译关键词然后逐段理解语法句式，这篇文章还是很好理解的，复制验证SPR和西工大的实验
我一般是先机械翻译关键词然后逐段理解语法句式，这篇文章还是很好理解的，复制验证SPR和西工大的实验
我把那个pdf下载下来了，看起来是个非常简单的介绍。估计有条件的网友（大学或者科研单位，可查文献），可以找到全文来，给大家分享一下。
简介我看了，不过我不是专业人士。大致和楼主的看法是一样的。米帝的实验设备应该还是相当不错的，比国内的估计强不少，所以实验使用了一个不锈钢的谐振腔，很小的好像。实验设计非常严密，花了6天来校验各个实验部分的可靠性，设计的完整性。实验花了两天。
但是米帝的实验出了一点小问题。他们做了两个实验件，一个主要是用来做白背景的，一个是优化的。可是两个都测出来有推力。看不到原文，不知道米帝搞出了什么毛病。
简介我看了，不过我不是专业人士。大致和楼主的看法是一样的。米帝的实验设备应该还是相当不错的，比国内的估计强不少，所以实验使用了一个不锈钢的谐振腔，很小的好像。实验设计非常严密，花了6天来校验各个实验部分的可靠性，设计的完整性。实验花了两天。
但是米帝的实验出了一点小问题。他们做了两个实验件，一个主要是用来做白背景的，一个是优化的。可是两个都测出来有推力。看不到原文，不知道米帝搞出了什么毛病。
估计米帝和世界其他地方的科学家一样，并不太理解这个东西到底是什么原理。
不过米帝倒是用软件把结果给模拟了一下，我就不明白，如果他实验不完全成功，怎么个软件模拟，难道米帝也喜欢脑补？
总之，米帝还要继续搞，下次（也可能就是已经完成了，因为这个文章很久了）要换设备，换试验件，继续搞。
不过米帝倒是用软件把结果给模拟了一下，我就不明白，如果他实验不完全成功，怎么个软件模拟，难道米帝也喜欢脑补？
总之，米帝还要继续搞，下次（也可能就是已经完成了，因为这个文章很久了）要换设备，换试验件，继续搞。
这个世界肿么了，西工大2009年就出论文了，这么颠覆性革命性的推进技术，居然NASA去年过实验，就是因为与现有理论不符？？
这个东西做好了，人类可以做UFO，还可以做电影“第五元素”里那种飞车，以后车都是飞来飞去，不用公路了，革命性的牛B技术。
这个东西做好了，人类可以做UFO，还可以做电影“第五元素”里那种飞车，以后车都是飞来飞去，不用公路了，革命性的牛B技术。
你想多了，太多了。
电能从别处转过就剩一半了，电能再转化成微波，又剩一半，目前也不知道这一半又只有百分之几能转化成力，到时候经济关过不去，可能只能用在太空上。那地方有的是太阳能，慢慢推去吧。
电能从别处转过就剩一半了，电能再转化成微波，又剩一半，目前也不知道这一半又只有百分之几能转化成力，到时候经济关过不去，可能只能用在太空上。那地方有的是太阳能，慢慢推去吧。
原理还是没说清楚啊，推力从哪来？辐射电磁波么产生的动量么？？动量不守恒？？
原理还是没说清楚啊，推力从哪来？辐射电磁波么产生的动量么？？动量不守恒？？
宏观上都说不清楚，但是电磁波理论和经典电动力学等应用计算可以计算出压力差
宏观上都说不清楚，但是电磁波理论和经典电动力学等应用计算可以计算出压力差
估计米帝和世界其他地方的科学家一样，并不太理解这个东西到底是什么原理。
不过米帝倒是用软件把结果给 ...
英国老头是最初请利物浦大学研究生建模计算机模型，后面跟进做的都采用通用的电磁波仿真软件建模，射频微波哪有不用软件仿真的？只是仿真软件不是为了直接找推力，而是确保微波源与腔体达到最佳匹配点，也就是微波功率良好的馈入效率。NASA做了真空环境的测试很了不起，但如果把SPR的腔体放真空，由于难以散热几分钟就会通红
不过米帝倒是用软件把结果给 ...
英国老头是最初请利物浦大学研究生建模计算机模型，后面跟进做的都采用通用的电磁波仿真软件建模，射频微波哪有不用软件仿真的？只是仿真软件不是为了直接找推力，而是确保微波源与腔体达到最佳匹配点，也就是微波功率良好的馈入效率。NASA做了真空环境的测试很了不起，但如果把SPR的腔体放真空，由于难以散热几分钟就会通红
原来是这样，计算方面的模拟啊，我还以为米帝在原理上突破了。
你能看到原文吗？简介说是说不细的。
你能看到原文吗？简介说是说不细的。
Post-test data includes static and animated graphics produced during RF resonant cavity characterization using the COMSOL Multiphysics software application.
就是这句。这个试验数据处理软件是个啥？
就是这句。这个试验数据处理软件是个啥？
宏观上都说不清楚，但是电磁波理论和经典电动力学等应用计算可以计算出压力差
。。。。是不是就是光子的动量？
。。。。是不是就是光子的动量？
寒江毒钓 发表于 2014-8-3 20:32
Post-test data includes static and animated graphics produced during RF resonant cavity characteriz ...
Multiphysics翻译为多物理场，因此这个软件的优势就在于多物理场耦合方面。多物理场的本质就是偏微分方程组（PDEs），所以只要是可以用偏微分方程组描述的物理现像，COMSOL Multiphysics都能够很好的计算、模拟、仿真。
2006年COMSOL Multiphysics再次被NASA技术杂志选为"本年度最佳上榜产品"，NASA技术杂志主编点评到，"当选为 NASA科学家所选出的年度最佳CAE产品的优胜者，表明COMSOL Multiphysics是对工程领域最有价值和意义的产品。"
COMSOL Multiphysics是一款大型的高级数值仿真软件。广泛应用于各个领域的科学研究以及工程计算，被当今世界科学家称为“第一款真正的任意多物理场直接耦合分析软件”。模拟科学和工程领域的各种物理过程，COMSOL Multiphysics以高效的计算性能和杰出的多场双向直接耦合分析能力实现了高度精确的数值仿真。
COMSOL Multiphysics是以有限元法为基础，通过求解偏微分方程（单场）或偏微分方程组（多场）来实现真实物理现象的仿真，被当今世界科学家称为“第一款真正的任意多物理场直接耦合分析软件”。用数学方法求解真实世界的物理现象，COMSOL Multiphysics以高效的计算性能和杰出的多场双向直接耦合分析能力实现了高度精确的数值仿真。目前已经在声学、生物科学、化学反应、弥散、电磁学、流体动力学、燃料电池、地球科学、热传导、微系统、微波工程、光学、光子学、多孔介质、量子力学、射频、半导体、结构力学、传动现象、波的传播等领域得到了广泛的应用。
寒江毒钓 发表于 2014-8-3 20:32
Post-test data includes static and animated graphics produced during RF resonant cavity characteriz ...
Multiphysics翻译为多物理场，因此这个软件的优势就在于多物理场耦合方面。多物理场的本质就是偏微分方程组（PDEs），所以只要是可以用偏微分方程组描述的物理现像，COMSOL Multiphysics都能够很好的计算、模拟、仿真。
2006年COMSOL Multiphysics再次被NASA技术杂志选为"本年度最佳上榜产品"，NASA技术杂志主编点评到，"当选为 NASA科学家所选出的年度最佳CAE产品的优胜者，表明COMSOL Multiphysics是对工程领域最有价值和意义的产品。"
COMSOL Multiphysics是一款大型的高级数值仿真软件。广泛应用于各个领域的科学研究以及工程计算，被当今世界科学家称为“第一款真正的任意多物理场直接耦合分析软件”。模拟科学和工程领域的各种物理过程，COMSOL Multiphysics以高效的计算性能和杰出的多场双向直接耦合分析能力实现了高度精确的数值仿真。
COMSOL Multiphysics是以有限元法为基础，通过求解偏微分方程（单场）或偏微分方程组（多场）来实现真实物理现象的仿真，被当今世界科学家称为“第一款真正的任意多物理场直接耦合分析软件”。用数学方法求解真实世界的物理现象，COMSOL Multiphysics以高效的计算性能和杰出的多场双向直接耦合分析能力实现了高度精确的数值仿真。目前已经在声学、生物科学、化学反应、弥散、电磁学、流体动力学、燃料电池、地球科学、热传导、微系统、微波工程、光学、光子学、多孔介质、量子力学、射频、半导体、结构力学、传动现象、波的传播等领域得到了广泛的应用。
寒江毒钓 发表于 2014-8-3 20:32
Post-test data includes static and animated graphics produced during RF resonant cavity characteriz ...
美国人这套软件综合性很强，多物理场都能一起计算仿真，不过这套也无法仿真出直接的物理原理出来。
Post-test data includes static and animated graphics produced during RF resonant cavity characteriz ...
美国人这套软件综合性很强，多物理场都能一起计算仿真，不过这套也无法仿真出直接的物理原理出来。
谢谢指点，这个高级玩意儿我肯定是用不上了。
米帝如果不是骗经费，那么这个论文和试验的目的已经很清楚：
Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma.
就是这个小东西确实产生了力，这个力不是任何 经典电磁学现象 能够解释的。
quantum vacuum virtual plasma，这个硬译 就是 量子真空虚拟等离子体
米帝的思路是这个波看成物质的话，就是一种等离子，那么这个设备，就是个 等离子推进器，只不过这个等离子是虚拟的，是一种波。
米帝如果不是骗经费，那么这个论文和试验的目的已经很清楚：
Test results indicate that the RF resonant cavity thruster design, which is unique as an electric propulsion device, is producing a force that is not attributable to any classical electromagnetic phenomenon and therefore is potentially demonstrating an interaction with the quantum vacuum virtual plasma.
就是这个小东西确实产生了力，这个力不是任何 经典电磁学现象 能够解释的。
quantum vacuum virtual plasma，这个硬译 就是 量子真空虚拟等离子体
米帝的思路是这个波看成物质的话，就是一种等离子，那么这个设备，就是个 等离子推进器，只不过这个等离子是虚拟的，是一种波。
现在早变公开新闻了，百度翻译
http://nasawatch.com/archives/2014/08/jscs-stealthy-s.html
这个是8月1日的新闻
NASA的标题， 星际迷航的推进器应该不能工作——但是实际上，能
JSC's Stealthy Star Trek-style Thruster Should Not Work - But Does
By Keith Cowing on August 1, 2014 1:43 PM. 30 Comments
NASA: New "impossible" engine works, could change space travel forever, Gizmodo
“不可能存在的”新引擎有效，可能永远改变太空旅行
"Now, American scientist Guido Fetta and a team at NASA Eagleworks--the advanced propulsion skunkworks led by Dr Harold "Sonny" White at the Johnson Space Center--have published a new paper that demonstrates that a similar engine working on the same principles does indeed produce thrust. Their model, however, produces much less thrust--just 30 to 50 micronewtons. But it works, which is amazing on its own. They haven't explained why their engine works, but it does work."
30到50微牛（靠，搞错，以为是毫牛）。他们还没有解释为什么引擎能够有效，不过它真的有效。
这个是楼主转贴的。
Anomalous Thrust Production from an RF Test Device Measured on a Low-Thrust Torsion Pendulum, NASA Technical Reports Server
"This paper describes the eight-day August 2013 test campaign designed to investigate and demonstrate viability of using classical magnetoplasmadynamics to obtain a propulsive momentum transfer via the quantum vacuum virtual plasma. This paper will not address the physics of the quantum vacuum plasma thruster, but instead will describe the test integration, test operations, and the results obtained from the test campaign."
英国Wired UK标题，NASA验证了“不可能存在的”太空引擎，（靠，西瓜大就是空气是吧）
Nasa validates 'impossible' space drive, Wired UK
"Nasa is a major player in space science, so when a team from the agency this week presents evidence that "impossible" microwave thrusters seem to work, something strange is definitely going on. Either the results are completely wrong, or Nasa has confirmed a major breakthrough in space propulsion."
这件事情绝对奇怪。要么就是结果完全是错的，要么就是Nasa确认了一项太空推进领域的重大突破！
PBS的标题，不大可能的推进器，看起来能够以打破所有现存物理定理的方式工作，
Improbable Thruster Seems to Work by Violating Known Laws of Physics, PBS
"In the paper, NASA seemed reluctant to dive into the drive's mysterious physics. They wrote nothing to suggest how, exactly, the force was produced. In fact, the mysterious drive actually worked even when they modified it in such a way it shouldn't have produced any thrust, suggesting the mechanics of the system are hazily understood. The one exception was a reference, in the paper's abstract, to a possible interaction with the "quantum vacuum virtual plasma."
怎样工作他们啥也没写，但确实，产生了力。事实上，当对这个驱动器进行更改，以便让它不应该产生力的那个试验条件下，这个神秘的驱动器实际上甚至还是在继续产生力，这暗示对这个系统的机理仍然理解模糊。唯一写了的，能让人稍许参考下的，就是在摘要中提到，可能与“量子真空虚拟等离子体”发生了相互作用。
Keith's note: JSC sure has some far out stuff under development. You'd think that they'd want to talk about it. But they don't. You'd think that they'd feel some compulsion to tell taxpayers what their money is being spent on - especially if it is cool. Guess again. I asked some questions about all of this stuff last year and got this semi-responsive reply back. The researcher behind all of this is Harold G. White. According to people.nasa.gov here is how you contact him: email: harold.white-1@nasa.gov Phone: 281.482.0178
点评：
JSC肯定私藏了不少好货。你觉得他们会说说这些，但是他们不会。你觉得他们对于交代一下如何浪费纳税人那么些钱应该有点压力——特别是当钱花在很酷的东西上。你再继续猜去吧。去年，我问了这个团队所有的人，问了不少问题，只得到这么半个答复。所有研究者的背后，是 Harold G. White。 你自己去问吧，地址在上面。
现在早变公开新闻了，百度翻译
http://nasawatch.com/archives/2014/08/jscs-stealthy-s.html
这个是8月1日的新闻
NASA的标题， 星际迷航的推进器应该不能工作——但是实际上，能
JSC's Stealthy Star Trek-style Thruster Should Not Work - But Does
By Keith Cowing on August 1, 2014 1:43 PM. 30 Comments
NASA: New "impossible" engine works, could change space travel forever, Gizmodo
“不可能存在的”新引擎有效，可能永远改变太空旅行
"Now, American scientist Guido Fetta and a team at NASA Eagleworks--the advanced propulsion skunkworks led by Dr Harold "Sonny" White at the Johnson Space Center--have published a new paper that demonstrates that a similar engine working on the same principles does indeed produce thrust. Their model, however, produces much less thrust--just 30 to 50 micronewtons. But it works, which is amazing on its own. They haven't explained why their engine works, but it does work."
30到50微牛（靠，搞错，以为是毫牛）。他们还没有解释为什么引擎能够有效，不过它真的有效。
这个是楼主转贴的。
Anomalous Thrust Production from an RF Test Device Measured on a Low-Thrust Torsion Pendulum, NASA Technical Reports Server
"This paper describes the eight-day August 2013 test campaign designed to investigate and demonstrate viability of using classical magnetoplasmadynamics to obtain a propulsive momentum transfer via the quantum vacuum virtual plasma. This paper will not address the physics of the quantum vacuum plasma thruster, but instead will describe the test integration, test operations, and the results obtained from the test campaign."
英国Wired UK标题，NASA验证了“不可能存在的”太空引擎，（靠，西瓜大就是空气是吧）
Nasa validates 'impossible' space drive, Wired UK
"Nasa is a major player in space science, so when a team from the agency this week presents evidence that "impossible" microwave thrusters seem to work, something strange is definitely going on. Either the results are completely wrong, or Nasa has confirmed a major breakthrough in space propulsion."
这件事情绝对奇怪。要么就是结果完全是错的，要么就是Nasa确认了一项太空推进领域的重大突破！
PBS的标题，不大可能的推进器，看起来能够以打破所有现存物理定理的方式工作，
Improbable Thruster Seems to Work by Violating Known Laws of Physics, PBS
"In the paper, NASA seemed reluctant to dive into the drive's mysterious physics. They wrote nothing to suggest how, exactly, the force was produced. In fact, the mysterious drive actually worked even when they modified it in such a way it shouldn't have produced any thrust, suggesting the mechanics of the system are hazily understood. The one exception was a reference, in the paper's abstract, to a possible interaction with the "quantum vacuum virtual plasma."
怎样工作他们啥也没写，但确实，产生了力。事实上，当对这个驱动器进行更改，以便让它不应该产生力的那个试验条件下，这个神秘的驱动器实际上甚至还是在继续产生力，这暗示对这个系统的机理仍然理解模糊。唯一写了的，能让人稍许参考下的，就是在摘要中提到，可能与“量子真空虚拟等离子体”发生了相互作用。
Keith's note: JSC sure has some far out stuff under development. You'd think that they'd want to talk about it. But they don't. You'd think that they'd feel some compulsion to tell taxpayers what their money is being spent on - especially if it is cool. Guess again. I asked some questions about all of this stuff last year and got this semi-responsive reply back. The researcher behind all of this is Harold G. White. According to people.nasa.gov here is how you contact him: email: harold.white-1@nasa.gov Phone: 281.482.0178
点评：
JSC肯定私藏了不少好货。你觉得他们会说说这些，但是他们不会。你觉得他们对于交代一下如何浪费纳税人那么些钱应该有点压力——特别是当钱花在很酷的东西上。你再继续猜去吧。去年，我问了这个团队所有的人，问了不少问题，只得到这么半个答复。所有研究者的背后，是 Harold G. White。 你自己去问吧，地址在上面。
米帝这个试验还是有疑问的，他们确实设备好，试验设计比较精密。把那个密闭的不锈钢真空杯，颠来倒去测了两天。
但是疑点就是那个对比试验失败了。要是能看到原文就好了。按照米帝摘要的理解，他们对原理有一些假设（可能和英国佬、西瓜大的一样，也可能不一样），并按照他们的思路把一个实验件改造过，
我猜，比如，把那个真空杯改成圆柱，不是锥形，结果放进去照样产生力。这个就比较神了。
不会是实验设计有啥毛病吧。
但是疑点就是那个对比试验失败了。要是能看到原文就好了。按照米帝摘要的理解，他们对原理有一些假设（可能和英国佬、西瓜大的一样，也可能不一样），并按照他们的思路把一个实验件改造过，
我猜，比如，把那个真空杯改成圆柱，不是锥形，结果放进去照样产生力。这个就比较神了。
不会是实验设计有啥毛病吧。
dahduh • 2 days ago
This result is almost certainly due to experimental error. 50uN is tiny and there could be any number of subtle effects that haven't been accounted for, such as magnetic or electrostatic fields, tensile relaxation, temperature changes, etc.
这个结果差不多肯定是实验误差嘛。50uN 微牛，这么小的力，可能由于其他任何微小的、没有预料到的效应产生，比如电场啦，磁场啦，应力啦，温度变化等等。
Paul451 dahduh • 18 hours ago
Throw in that they got a positive thrust from a device which was designed by the same inventors to not produce any thrust (as a "null" article). It screams "experimental error".
想想，他们得到了力的正输出，可是那个设备设计的就是应该不产生力的（对比实验件）。这就是“实验误差”。
TheBrett • 2 days ago
Is Harold White the same guy at NASA who is getting grant money to do "research" into Warp Drive?
I'm going to wait for more independent duplication on this one. There might be something else going on, especially when the produced thrust is so small.
Harold White这货不就是从NASA搞了一大笔钱，去“科研”曲率引擎的家伙吗？我还是等等独立重复实验吧。这个很可能是别的啥东西，尤其力还那么小。
Astroraider TheBrett • a day ago
... and the Chinese got even more thrust!
……而且中国人搞的力更大！（靠，中国人多力量大，这个你用什么感叹号）
Todd Austin • 2 days ago
This is now the third group building these things and getting positive results. The original British researcher was able to get 720mN from his setup, well outside any sources of possible error. I would not be so fast to dismiss these results.
这个现在已经是第三个实验组，建立设备并且得到肯定结果。最初的英国研究者得到了 720mN 力，排除了可能的误差因素。我还不能这么快放弃这个结果。
Paul451 Todd Austin • 19 hours ago
However, the NASA experiment got 30-50 micro-Newtons.
The more careful the experiment, the smaller the result... hmmm...
可是，NASA实验才搞了30--50微牛。实验越认真，结果就越小……哈哈
Todd Austin Paul451 • 14 hours ago
I don't think that's the case. The NASA experiment use a somewhat different approach from the one that's been in development in the UK for a decade. It may be more reasonable to say that the local version was not as refined.
我觉得不是那么回事儿。NASA实验使用了一种不太一样的途径，和几十年前英国人开发的东西不一样。不如说这个本地版还没有进行优化更合适。
Neowolf • 2 days ago
It should be pointed out that such an effect, if real, violates conservation of energy. They have in effect claimed to have built a perpetual motion machine of the first kind.
必须指出，这么一种效应，如果是真的，那么违反了能量守恒。（靠，什么脑子）他们宣布创造了第一类永动机。（小学没毕业的货）
the ghost of Harlan Ellison Neowolf • 2 days ago
Don't they put energy into the system to produce the microwaves?
他们不是给系统输入能量产生微波了吗？
PS: not a physicist.我不是物理学家。
voronwae Neowolf • 2 days ago
"Conservation of energy" sure does mean something different to you than it does to me. They got less energy out than they put in. I think "conservation of momentum" might be the phrase you're looking for.
They're also the fifth group to find something (Shawyer, Cannae, Northwestern Polytechnic, CONICET, Eagleworks), which would suggest that if an error is being made somewhere, it's a subtle one.
看来“能量守恒”对于你和对于我的结果不一样。他们得到输出的能量比他们输入的少。你大概在那里找“动量守恒”吧。
他们也是第五个找到点结果的团队了（英国佬索亚，Cannae, 西北理工Northwestern Polytechnic, 西瓜大CONICET, 这次的美国佬Eagleworks，哦，还有西北理工，有网友去查论文了吗？），这很可能意味着如果有误差的话，那一定是一个非常精妙的误差。
Andrew Goetsch • 2 days ago
Micron Newtons? A butterfly farting or tiny misalignment of the test gear could generate that much thrust. There's a lot of work and double checking before it can be taken seriously.
微牛？蝴蝶放个屁或者实验设备微小的失调都比这个产生的力大。这事儿当真之前得要好好查查。
voronwae Andrew Goetsch • 2 days ago
They've done a year of review. The next battery of experiments will begin this month or next. Presumably they would check Shawyer's drive instead of Cannae's, but maybe they're saving that for next year.
他们已经查了一年了好吧。这一两个月蝴蝶就要进行第二次实验了。大概他们会去查查英国佬索亚的驱动器而不是Cannae的那个（为啥？），不过也可能他们明年才会去查。
lcs1956 • 2 days ago
Whoever allowed these engineers to insert a statement into a NASA Tech Report abstract about 'quantum vacuum virtual plasma' should be fired. Everything about the JSC skunkworks stinks.
那个允许这帮子工程师在NASA技术报告的摘要中塞进去这个“量子真空虚拟等离子体”的二货，应该立刻解雇。JSC就是一粪堆。（靠，这货是不是被NASA解雇的。。。。）
voronwae lcs1956 • 2 days ago
They're the fifth group to get positive results, and "quantum vacuum virtual plasma" is the best explanation anybody's ever come up with.
他们是第五个得到肯定结果的团队了，而且对于任何面对这个问题的人来说，“量子真空虚拟等离子体”是最好的解释。
intdydx lcs1956 • 2 days ago
I agree, it's pretty embarrassing for the rest of us. I'm very surprised that JSC management is okay with this.
我同意批判JSC，对于我们其他人来说这事儿非常尴尬。JSC放行这个文章我大吃一惊。
The test took place in a vacuum chamber at ambient pressure. The very low thrust level could be accounted for in several ways due to interaction with the gases present in the chamber.
测试在常压下一个真空腔内进行。这么低的力可能是由于多种原因与腔内残存的各种气体相互作用造成的。
vulture4 • 2 days ago
First, the data could easily be in error. Second, the dynamic Casimir effect is indeed capable of producing force. However that force is well understood and is no greater than the force that would be produced by the same energy if applied to emit a stream of photons.
第一、数据可能容易出错。第二，动态Casimir效应确实能产生力（来个大神，解释下这啥东西）
不过，这个力也容易理解，这个力比同样能量发射光子流产生的力小。
Chris Clardy vulture4 • 2 days ago
Heck yes the data could be in error, but you're still excited, aren't you?
数据当然可能是错了，不过你们还是很激动，是不是？
richard_schumacher • 2 days ago
As Richard Feynman said more than once: "No, I will not examine your experiment which appears to violate relativity; you will find the mistakes in your experiment faster than I can". Of course this assumes that the experimenter *wants* to find the mistakes.
就像理查德·费曼不止一次说过的那样：“不，我才不会去检查你那个明显违反相对论的实验呢；你将会比我更快地发现实验中的一堆错误。”（这牛人说过吗？好像没在超大说过）当然，这个结论的前提是实验者“希望”找出错误。
michelle richard_schumacher • a day ago
LOL.... you could almost imagine an Einstein critic saying No, I will not examine your experiment which appears to violate Newtonian mechanics ; you will find the mistakes in your experiment faster than I can, I will wait for the verdict on this one but I see no problem with further research
笑死了……你可以想象，爱因斯坦批判说，不，我才不会去验证你那个明显违反了牛顿定理的实验呢；你将会比我更快地发现你那个破试验中的一堆错误，我就在这儿等着这个判决，但是对于进一步的研究，我看不出啥毛病。
richard_schumacher michelle • 20 hours ago
Einsteinian relativity encompasses Newtonian mechanics and enlarges its scope to large energies; it does not violate Newtonian mechanics.
爱因斯坦相对论包括了牛顿定律，扩大范围到了更高能量；它没有违反牛顿定律。
Oscar_Femur • 2 days ago
This could have even more applications than the Dean Drive did.
这个可能比反重力驱动器还有用。
Lawrence Wild • a day ago
Anyone want to bet that the apparent thrust was caused by heating of ambient external air in front of the device and that the effect disappears once they pump the chamber down to a hard vacuum? That's where my money is. Note that this thought isn't original to me, it's been the common guess for several critics of the device. As one put it "At best he's created an expensive fan".
喂，有没有人来跟我赌，这个明显的力就是加热了设备前面外部空气造成的，并且把设备搬到严格真空里面，力就没了？注意啊，这个可不是本人首创，已经有好几个批评的人都是这么猜的。有人说，这个玩意儿最多就是一个奇贵无比的电风扇。
richard_schumacher Lawrence Wild • 20 hours ago
I'd bet a dollar that's what they have. At the very most they're re-discovered the photon drive, which someone does every dozen years or so.
我押一块钱。他们肯定实在重新发明光子驱动器，这东西几十年前早都发明过了。
Rui Sousa • 2 days ago
Hehe, while USA scientists are carefully avoiding negative peer reviews, Chinese ones developing this EMdrive with no such frills will land colonists by the thousand on the Moon and Mars and maybe will develop undetectable ICBMs just for fun.
呵呵，当美国科学家小心翼翼地避免负面的同行评价，开发EMDrive的中国科学家却没有这些条条框框，并且将会成千上万人跑到月球和火星上去殖民了（靠，没文化的白皮，种胡萝卜，你的，明白？）而且为了好玩，还会开发出无法抵御的ICBM。
Bennett In Vermont Rui Sousa • 2 days ago
ICBMs powered by a micronewton thrust engine?
ICBM用微牛级别的驱动？
Dream on, comrade.
同志，你继续梦游吧。
duheagle Rui Sousa • a day ago
Powered by cold fusion reactors no doubt.
Hey, I hope there's something to this. But extraordinary claims require extraordinary proof. I'll await developments.
肯定是冷聚变驱动嘛。
喂，我当然希望这东西有点真货。但是不一般的结论需要不一般的证据。我再等等。
Luis Vázquez • a day ago
I think the phone number for Mr. White is wrong. JSC has no 482 phone exchange.
我看那个Mr. White的电话号码肯定是错的，JSC没有482分机。
dahduh • 2 days ago
This result is almost certainly due to experimental error. 50uN is tiny and there could be any number of subtle effects that haven't been accounted for, such as magnetic or electrostatic fields, tensile relaxation, temperature changes, etc.
这个结果差不多肯定是实验误差嘛。50uN 微牛，这么小的力，可能由于其他任何微小的、没有预料到的效应产生，比如电场啦，磁场啦，应力啦，温度变化等等。
Paul451 dahduh • 18 hours ago
Throw in that they got a positive thrust from a device which was designed by the same inventors to not produce any thrust (as a "null" article). It screams "experimental error".
想想，他们得到了力的正输出，可是那个设备设计的就是应该不产生力的（对比实验件）。这就是“实验误差”。
TheBrett • 2 days ago
Is Harold White the same guy at NASA who is getting grant money to do "research" into Warp Drive?
I'm going to wait for more independent duplication on this one. There might be something else going on, especially when the produced thrust is so small.
Harold White这货不就是从NASA搞了一大笔钱，去“科研”曲率引擎的家伙吗？我还是等等独立重复实验吧。这个很可能是别的啥东西，尤其力还那么小。
Astroraider TheBrett • a day ago
... and the Chinese got even more thrust!
……而且中国人搞的力更大！（靠，中国人多力量大，这个你用什么感叹号）
Todd Austin • 2 days ago
This is now the third group building these things and getting positive results. The original British researcher was able to get 720mN from his setup, well outside any sources of possible error. I would not be so fast to dismiss these results.
这个现在已经是第三个实验组，建立设备并且得到肯定结果。最初的英国研究者得到了 720mN 力，排除了可能的误差因素。我还不能这么快放弃这个结果。
Paul451 Todd Austin • 19 hours ago
However, the NASA experiment got 30-50 micro-Newtons.
The more careful the experiment, the smaller the result... hmmm...
可是，NASA实验才搞了30--50微牛。实验越认真，结果就越小……哈哈
Todd Austin Paul451 • 14 hours ago
I don't think that's the case. The NASA experiment use a somewhat different approach from the one that's been in development in the UK for a decade. It may be more reasonable to say that the local version was not as refined.
我觉得不是那么回事儿。NASA实验使用了一种不太一样的途径，和几十年前英国人开发的东西不一样。不如说这个本地版还没有进行优化更合适。
Neowolf • 2 days ago
It should be pointed out that such an effect, if real, violates conservation of energy. They have in effect claimed to have built a perpetual motion machine of the first kind.
必须指出，这么一种效应，如果是真的，那么违反了能量守恒。（靠，什么脑子）他们宣布创造了第一类永动机。（小学没毕业的货）
the ghost of Harlan Ellison Neowolf • 2 days ago
Don't they put energy into the system to produce the microwaves?
他们不是给系统输入能量产生微波了吗？
PS: not a physicist.我不是物理学家。
voronwae Neowolf • 2 days ago
"Conservation of energy" sure does mean something different to you than it does to me. They got less energy out than they put in. I think "conservation of momentum" might be the phrase you're looking for.
They're also the fifth group to find something (Shawyer, Cannae, Northwestern Polytechnic, CONICET, Eagleworks), which would suggest that if an error is being made somewhere, it's a subtle one.
看来“能量守恒”对于你和对于我的结果不一样。他们得到输出的能量比他们输入的少。你大概在那里找“动量守恒”吧。
他们也是第五个找到点结果的团队了（英国佬索亚，Cannae, 西北理工Northwestern Polytechnic, 西瓜大CONICET, 这次的美国佬Eagleworks，哦，还有西北理工，有网友去查论文了吗？），这很可能意味着如果有误差的话，那一定是一个非常精妙的误差。
Andrew Goetsch • 2 days ago
Micron Newtons? A butterfly farting or tiny misalignment of the test gear could generate that much thrust. There's a lot of work and double checking before it can be taken seriously.
微牛？蝴蝶放个屁或者实验设备微小的失调都比这个产生的力大。这事儿当真之前得要好好查查。
voronwae Andrew Goetsch • 2 days ago
They've done a year of review. The next battery of experiments will begin this month or next. Presumably they would check Shawyer's drive instead of Cannae's, but maybe they're saving that for next year.
他们已经查了一年了好吧。这一两个月蝴蝶就要进行第二次实验了。大概他们会去查查英国佬索亚的驱动器而不是Cannae的那个（为啥？），不过也可能他们明年才会去查。
lcs1956 • 2 days ago
Whoever allowed these engineers to insert a statement into a NASA Tech Report abstract about 'quantum vacuum virtual plasma' should be fired. Everything about the JSC skunkworks stinks.
那个允许这帮子工程师在NASA技术报告的摘要中塞进去这个“量子真空虚拟等离子体”的二货，应该立刻解雇。JSC就是一粪堆。（靠，这货是不是被NASA解雇的。。。。）
voronwae lcs1956 • 2 days ago
They're the fifth group to get positive results, and "quantum vacuum virtual plasma" is the best explanation anybody's ever come up with.
他们是第五个得到肯定结果的团队了，而且对于任何面对这个问题的人来说，“量子真空虚拟等离子体”是最好的解释。
intdydx lcs1956 • 2 days ago
I agree, it's pretty embarrassing for the rest of us. I'm very surprised that JSC management is okay with this.
我同意批判JSC，对于我们其他人来说这事儿非常尴尬。JSC放行这个文章我大吃一惊。
The test took place in a vacuum chamber at ambient pressure. The very low thrust level could be accounted for in several ways due to interaction with the gases present in the chamber.
测试在常压下一个真空腔内进行。这么低的力可能是由于多种原因与腔内残存的各种气体相互作用造成的。
vulture4 • 2 days ago
First, the data could easily be in error. Second, the dynamic Casimir effect is indeed capable of producing force. However that force is well understood and is no greater than the force that would be produced by the same energy if applied to emit a stream of photons.
第一、数据可能容易出错。第二，动态Casimir效应确实能产生力（来个大神，解释下这啥东西）
不过，这个力也容易理解，这个力比同样能量发射光子流产生的力小。
Chris Clardy vulture4 • 2 days ago
Heck yes the data could be in error, but you're still excited, aren't you?
数据当然可能是错了，不过你们还是很激动，是不是？
richard_schumacher • 2 days ago
As Richard Feynman said more than once: "No, I will not examine your experiment which appears to violate relativity; you will find the mistakes in your experiment faster than I can". Of course this assumes that the experimenter *wants* to find the mistakes.
就像理查德·费曼不止一次说过的那样：“不，我才不会去检查你那个明显违反相对论的实验呢；你将会比我更快地发现实验中的一堆错误。”（这牛人说过吗？好像没在超大说过）当然，这个结论的前提是实验者“希望”找出错误。
michelle richard_schumacher • a day ago
LOL.... you could almost imagine an Einstein critic saying No, I will not examine your experiment which appears to violate Newtonian mechanics ; you will find the mistakes in your experiment faster than I can, I will wait for the verdict on this one but I see no problem with further research
笑死了……你可以想象，爱因斯坦批判说，不，我才不会去验证你那个明显违反了牛顿定理的实验呢；你将会比我更快地发现你那个破试验中的一堆错误，我就在这儿等着这个判决，但是对于进一步的研究，我看不出啥毛病。
richard_schumacher michelle • 20 hours ago
Einsteinian relativity encompasses Newtonian mechanics and enlarges its scope to large energies; it does not violate Newtonian mechanics.
爱因斯坦相对论包括了牛顿定律，扩大范围到了更高能量；它没有违反牛顿定律。
Oscar_Femur • 2 days ago
This could have even more applications than the Dean Drive did.
这个可能比反重力驱动器还有用。
Lawrence Wild • a day ago
Anyone want to bet that the apparent thrust was caused by heating of ambient external air in front of the device and that the effect disappears once they pump the chamber down to a hard vacuum? That's where my money is. Note that this thought isn't original to me, it's been the common guess for several critics of the device. As one put it "At best he's created an expensive fan".
喂，有没有人来跟我赌，这个明显的力就是加热了设备前面外部空气造成的，并且把设备搬到严格真空里面，力就没了？注意啊，这个可不是本人首创，已经有好几个批评的人都是这么猜的。有人说，这个玩意儿最多就是一个奇贵无比的电风扇。
richard_schumacher Lawrence Wild • 20 hours ago
I'd bet a dollar that's what they have. At the very most they're re-discovered the photon drive, which someone does every dozen years or so.
我押一块钱。他们肯定实在重新发明光子驱动器，这东西几十年前早都发明过了。
Rui Sousa • 2 days ago
Hehe, while USA scientists are carefully avoiding negative peer reviews, Chinese ones developing this EMdrive with no such frills will land colonists by the thousand on the Moon and Mars and maybe will develop undetectable ICBMs just for fun.
呵呵，当美国科学家小心翼翼地避免负面的同行评价，开发EMDrive的中国科学家却没有这些条条框框，并且将会成千上万人跑到月球和火星上去殖民了（靠，没文化的白皮，种胡萝卜，你的，明白？）而且为了好玩，还会开发出无法抵御的ICBM。
Bennett In Vermont Rui Sousa • 2 days ago
ICBMs powered by a micronewton thrust engine?
ICBM用微牛级别的驱动？
Dream on, comrade.
同志，你继续梦游吧。
duheagle Rui Sousa • a day ago
Powered by cold fusion reactors no doubt.
Hey, I hope there's something to this. But extraordinary claims require extraordinary proof. I'll await developments.
肯定是冷聚变驱动嘛。
喂，我当然希望这东西有点真货。但是不一般的结论需要不一般的证据。我再等等。
Luis Vázquez • a day ago
I think the phone number for Mr. White is wrong. JSC has no 482 phone exchange.
我看那个Mr. White的电话号码肯定是错的，JSC没有482分机。
前段时间听人说西工大又有新进展了，不知道现在进度如何
抱歉，重复了，删掉。
抱歉，重复了，删掉。
删除掉。删除掉。
猜测都是这样，瞎猜，基本毫无意义，谁有干货再分享吧。
删除掉。删除掉。
猜测都是这样，瞎猜，基本毫无意义，谁有干货再分享吧。
米帝这个试验还是有疑问的，他们确实设备好，试验设计比较精密。把那个密闭的不锈钢真空杯，颠来倒去测了两 ...
某哥们曾非常肯定地说圆柱型腔也会产生推力，我一直不赞同这个预测，这下就。。。。。。
某哥们曾非常肯定地说圆柱型腔也会产生推力，我一直不赞同这个预测，这下就。。。。。。
前段时间听人说西工大又有新进展了，不知道现在进度如何
某老师一直在困惑中，好几个对比腔都有推力输出，还没落实定论。他们会跟NASA联系，估计会极大提速研究进展，说实在话杨老师一度非常孤立
某老师一直在困惑中，好几个对比腔都有推力输出，还没落实定论。他们会跟NASA联系，估计会极大提速研究进展，说实在话杨老师一度非常孤立
(8.17 KB, 下载次数: 4)2014-8-4 08:17 上传点击文件名下载附件
oyzw 发表于 2014-8-3 19:58
英国老头是最初请利物浦大学研究生建模计算机模型，后面跟进做的都采用通用的电磁波仿真软件建模，射频微 ...
哪里有真空环境，瞎扯吧。
英国老头是最初请利物浦大学研究生建模计算机模型，后面跟进做的都采用通用的电磁波仿真软件建模，射频微 ...
哪里有真空环境，瞎扯吧。
某老师，呵呵吧。某老师也不过如此，问他（她）搞小船实验吧，搞不出来，就呵呵了。