EM Drive - User contributions [en]

Main Page

2015-05-09T09:00:03Z

Mulletron: /* NasaSpaceFlight.com Links */

<strong>Welcome to the EM Drive wiki.</strong>

This site is a repository of the current information available for the [http://www.nasaspaceflight.com/2015/04/evaluating-nasas-futuristic-em-drive/ EM Drive project] currently underway at NASA Eagleworks. The goal is to present all the background documentation in one place, so people following the forum threads can quickly get up to speed on what has been previously discussed.

''Please note that this is an unmoderated, community-run site that discusses a rather controversial topic.'' As such, anyone is free to write whatever she/he wants regarding her/his own work or posts regarding the EM Drive. However, other people's work (whether they be posts in the NasaSpaceFlight.com forums or elsewhere) should only be linked or quoted verbatim (but never paraphrased). This will prevent a repeat of the problems witnessed in the past due to the false, misleading reports in the media about the EM Drive research done by NASA Eagleworks.

== Contents ==

[[Frequently Asked Questions]] - A good place to start.

[[Possible Error Sources]] - Attempts to explain anomalous thrust via experimental error or 'conventional' means.

[[Building]] - A few people are trying to build their own.

[[Experimental Results]] - Experimental data provided by currently investigating groups.

[[Theory]] - While there's no consensus on any of this, here are various attempts to support (and debunk) it.

[[Useful Documentation]] - A list of all documentation referenced in the thread.

== NasaSpaceFlight.com Links ==

* [http://forum.nasaspaceflight.com/index.php?topic=29276.0 NASASpaceFlight.com EM Drive Developments - Thread 1] - Original thread on NSF.
* [http://forum.nasaspaceflight.com/index.php?topic=36313.0 NASASpaceFlight.com EM Drive Developments - Thread 2] - detailed analysis of the experimental setup and possible theories of operation. This is the primary thread providing information to this wiki.
* [http://forum.nasaspaceflight.com/index.php?topic=37438.0 NASASpaceFlight.com Feature Article Discussion] - less-technical discussion of the above blog post.

Useful Documentation

2015-05-09T08:29:37Z

Mulletron:

This page is to be a repository of links or references to useful documentation referenced in the thread. To be organized at a later date.

== General Documentation ==
Documentation from a variety of non categorized topics.

{| class="wikitable"
! style="text-align:left;"|# ||Description ||Link ||Source Post
|-
|1 || AIAA JPC 2014: Theory of a Mach Effect Thruster || [http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=626443 Download Link] || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1301999#msg1301999
|-
|2 || Mach Effect Thrust, Power, Acceleration, Heat vs Time Graph || [http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=626461 Download Link] || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1302018#msg1302018
|-
|3 || Experimental Tests of the Mach Effect Thruster || http://www.researchgate.net/profile/Heidi_Fearn/publication/264040874_EXP-tests13/links/00b4953c9a2675bcc0000000?ev=pub_ext_doc_dl&origin=publication_list&inViewer=true|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1302475#msg1302475
|-
|4 || Revised Theory of Transient Mass Fluctuations || http://web.ornl.gov/~webworks/cppr/y2001/pres/111404.pdf || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1305433#msg1305433
|-
|5 || Support for the Thermal Origin of the Pioneer Anomaly|| http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.241101|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1305433#msg1305433
|-
|6 || On Factorization of Einstein's Formalism into a Pair of Quaternion Field Equations|| http://streaming.ictp.trieste.it/preprints/P/66/081.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307817#msg1307817
|-
|7 || The Mach Principle and the Origin of Inertia From General Relativity|| http://mendelsachs.com/wp-content/uploads/articles/the-mach-principle.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307817#msg1307817
|-
|8 || Symmetry in Electrodynamics|| http://www.cheniere.org/references/Symmetry_in_Electrodynamics.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307836#msg1307836
|-
|9 || Physics of Extreme Gravitomagnetic and Gravity-Like Fields for Novel Space Propulsion and Energy Generation|| http://arxiv.org/abs/1104.3247|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309415#msg1309415
|-
|10 || Emerging Physics for Novel Field Propulsion Science||http://www.hpcc-space.com/publications/documents/AIP2010Hauser.pdf || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309415#msg1309415
|-
|11 || || ||
|}

== EM Drive Documentation ==
Documentation specifically about the EM Drive.

{| class="wikitable"
! style="text-align:left;"|# ||Description ||Link ||Source Post
|-
|1 || A Note on the Principles of EmDrive force measurement|| http://www.emdrive.com/EmDriveForceMeasurement.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309452#msg1309452
|}

== Desired Documentation ==
Documents that have been requested, but have not yet been found.

#Sachs, M. (1964).Nuovo cimento,31, 98.
#Sachs, M. (1968a).International Journal of Theoretical Physics, Vol. 1, No. 4, p. 387.
#Sachs, M. (1968b).Nuovo cimento,53A, 561.
#Sachs, M. and Schwebel, S. L. (1961).Nuovo cimento, Supplement21, 197.
#Sachs, M. and Schwebel, S. L. (1962).Journal of Mathematics and Physics,3, 843.
#Sachs, M. and Schwebel, S. L. (1963).Nuclear Physics,43, 204.
#Schwebel, S. L. INT J THEOR PHYS , vol. 6, no. 1, pp. 61-74, 1972, "Interaction theory of the electromagnetic field"

== Recommended Background Material ==
#Rizzi, Peter A. (Prentice-Hall 1988), "Microwave Engineering - Passive Circuits", ISBN 0-13-586702-9, this book is recommended by Roger Shawyer.

== Other ==
Other (as yet unsorted) documents pulled from the emdrive.com site are [https://drive.google.com/folderview?id=0B4HQOBAlU2TDMEhtOEVJV3ppVzg&usp=sharing here].
Large repository of documents: [http://share.xmarks.com/folder/bookmarks/bSVKVUD6LU here, scroll down to ///research///]

Useful Documentation

2015-05-09T08:28:10Z

Mulletron:

Useful Documentation

2015-05-09T08:27:01Z

Mulletron:

This page is to be a repository of links or references to useful documentation referenced in the thread. To be organized at a later date.

== General Documentation ==
Documentation from a variety of non categorized topics.

{| class="wikitable"
! style="text-align:left;"|# ||Description ||Link ||Source Post
|-
|1 || AIAA JPC 2014: Theory of a Mach Effect Thruster || [http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=626443 Download Link] || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1301999#msg1301999
|-
|2 || Mach Effect Thrust, Power, Acceleration, Heat vs Time Graph || [http://forum.nasaspaceflight.com/index.php?action=dlattach;topic=36313.0;attach=626461 Download Link] || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1302018#msg1302018
|-
|3 || Experimental Tests of the Mach Effect Thruster || http://www.researchgate.net/profile/Heidi_Fearn/publication/264040874_EXP-tests13/links/00b4953c9a2675bcc0000000?ev=pub_ext_doc_dl&origin=publication_list&inViewer=true|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1302475#msg1302475
|-
|4 || Revised Theory of Transient Mass Fluctuations || http://web.ornl.gov/~webworks/cppr/y2001/pres/111404.pdf || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1305433#msg1305433
|-
|5 || Support for the Thermal Origin of the Pioneer Anomaly|| http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.241101|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1305433#msg1305433
|-
|6 || On Factorization of Einstein's Formalism into a Pair of Quaternion Field Equations|| http://streaming.ictp.trieste.it/preprints/P/66/081.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307817#msg1307817
|-
|7 || The Mach Principle and the Origin of Inertia From General Relativity|| http://mendelsachs.com/wp-content/uploads/articles/the-mach-principle.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307817#msg1307817
|-
|8 || Symmetry in Electrodynamics|| http://www.cheniere.org/references/Symmetry_in_Electrodynamics.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1307836#msg1307836
|-
|9 || Physics of Extreme Gravitomagnetic and Gravity-Like Fields for Novel Space Propulsion and Energy Generation|| http://arxiv.org/abs/1104.3247|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309415#msg1309415
|-
|10 || Emerging Physics for Novel Field Propulsion Science||http://www.hpcc-space.com/publications/documents/AIP2010Hauser.pdf || http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309415#msg1309415
|-
|11 || || ||
|}

== EM Drive Documentation ==
Documentation specifically about the EM Drive.

{| class="wikitable"
! style="text-align:left;"|# ||Description ||Link ||Source Post
|-
|1 || A Note on the Principles of EmDrive force measurement|| http://www.emdrive.com/EmDriveForceMeasurement.pdf|| http://forum.nasaspaceflight.com/index.php?topic=36313.msg1309452#msg1309452
|}

== Desired Documentation ==
Documents that have been requested, but have not yet been found.

#Sachs, M. (1964).Nuovo cimento,31, 98.
#Sachs, M. (1968a).International Journal of Theoretical Physics, Vol. 1, No. 4, p. 387.
#Sachs, M. (1968b).Nuovo cimento,53A, 561.
#Sachs, M. and Schwebel, S. L. (1961).Nuovo cimento, Supplement21, 197.
#Sachs, M. and Schwebel, S. L. (1962).Journal of Mathematics and Physics,3, 843.
#Sachs, M. and Schwebel, S. L. (1963).Nuclear Physics,43, 204.
#Schwebel, S. L. INT J THEOR PHYS , vol. 6, no. 1, pp. 61-74, 1972, "Interaction theory of the electromagnetic field"

== Recommended Background Material ==
#Rizzi, Peter A. (Prentice-Hall 1988), "Microwave Engineering - Passive Circuits", ISBN 0-13-586702-9, this book is recommended by Roger Shawyer.

== Other ==
Other (as yet unsorted) documents pulled from the emdrive.com site are [https://drive.google.com/folderview?id=0B4HQOBAlU2TDMEhtOEVJV3ppVzg&usp=sharing here].
Large repository of documents here: [http://share.xmarks.com/folder/bookmarks/bSVKVUD6LU]

Theory

2015-05-09T08:22:39Z

Mulletron: /* Proponent Theories */

This page will outline some candidate theories of operation (or non-operation).

== Debunking Theories ==
*These theories should be explained, then debunked with the simplest explanation, with a link to a dedicated page to show the work or work in progress that backs up that explanation.

=== Experimental error ===
* It's all a hoax/conspiracy
* Simple measuring error
* Thermal effects
* Mechanical vibration
* Magnetic effects with environment

These are discussed in more detail at [[Possible Error Sources]].

=== Proponent Theories ===
* Guido Fetta's, Cannae Drive creator's Theory
* Roger Shawyer's, EM Drive creator's theory
* Quantum foam MHD
* Harold White's Quantum vacuum plasma thruster (QVP thruster)
* Conservation of momentum breaking theories
** Mike McCulloch's MiHsC<ref>[http://physicsfromtheedge.blogspot.co.uk/2015/05/mihsc-vs-29-anomalies.html 3/5/15 post by Mike McCulloch, MiHsC vs 29 anomalies]</ref> - this deserves an entire subsection - see http://physicsfromtheedge.blogspot.co.uk/
* Harold White's Warp effects
* Evanescent waves<ref>[http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330521#msg1330521 2/2/15 post by @aero modeled evanescent waves] using [http://ab-initio.mit.edu/wiki/index.php/Meep MEEP]. Conclusion was that, due to rapid dropoff at the frustum surface, these were of insufficient magnitude to explain the thrust.</ref>
* Transfer of linear momentum from the Quantum Vacuum to magnetoelectric and chiral molecules <ref>http://forum.nasaspaceflight.com/index.php?topic=36313.msg1330846#msg1330846 and http://forum.nasaspaceflight.com/index.php?topic=36313.msg1333392#msg1333392 </ref>

8/5/14 - Greg Egan [http://www.gregegan.net/SCIENCE/Cavity/Cavity.html modeled the resonant modes of a conical cavity].

== References ==
<references />