https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?action=history&feed=atom&title=Helical_railguns 2026-05-02T14:13:06Z Revision history for this page on the wiki MediaWiki 1.41.1 https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=3789&oldid=prev 2026-03-07T19:01:57Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 12:01, 7 March 2026</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l19">Line 19:</td> <td colspan="2" class="diff-lineno">Line 19:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Warfare]][[Category:Physics &amp; Engineering]][[Category:Engineering]][[Category:Military Technology]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Warfare]][[Category:Physics &amp; Engineering]][[Category:<ins style="font-weight: bold; text-decoration: none;">Engineering]][[Category:Physics &amp; Math &amp; </ins>Engineering]][[Category:Military Technology]]</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2995&oldid=prev 2024-05-08T05:10:29Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 22:10, 7 May 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l4">Line 4:</td> <td colspan="2" class="diff-lineno">Line 4:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel <ins style="font-weight: bold; text-decoration: none;">and rails</ins>, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;div class=&quot;center&quot; style=&quot;width: auto; margin-left: auto; margin-right: auto;&quot;&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;div class=&quot;center&quot; style=&quot;width: auto; margin-left: auto; margin-right: auto;&quot;&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;table&gt;&lt;tr&gt;&lt;td&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;table&gt;&lt;tr&gt;&lt;td&gt;</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2899&oldid=prev 2024-04-23T21:31:49Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:31, 23 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l19">Line 19:</td> <td colspan="2" class="diff-lineno">Line 19:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== References ==</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Warfare]][[Category:Physics <del style="font-weight: bold; text-decoration: none;">&amp; Math </del>&amp; Engineering]][[Category:Engineering]]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Warfare]][[Category:Physics &amp; Engineering]][[Category:Engineering<ins style="font-weight: bold; text-decoration: none;">]][[Category:Military Technology</ins>]]</div></td></tr> </table>

Tshhmon https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2876&oldid=prev 2024-04-17T14:52:34Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 07:52, 17 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on <del style="font-weight: bold; text-decoration: none;">which one is in front and which is in back</del>) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on <ins style="font-weight: bold; text-decoration: none;">the relative directions of the windings</ins>) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2875&oldid=prev 2024-04-17T14:50:39Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 07:50, 17 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns <ins style="font-weight: bold; text-decoration: none;">are </ins>one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.  Because a helical railgun can launch its projectile with lower current, it can potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2861&oldid=prev 2024-04-17T03:48:15Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:48, 16 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2">Line 2:</td> <td colspan="2" class="diff-lineno">Line 2:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a &quot;brush&quot; when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, &quot;Solid-projectile Helical coil Electromagnetic launcher&quot;, 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a &quot;brush&quot; when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, &quot;Solid-projectile Helical coil Electromagnetic launcher&quot;, 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun, <del style="font-weight: bold; text-decoration: none;">and </del>potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun<ins style="font-weight: bold; text-decoration: none;">.  Because a helical railgun can launch its projectile with lower current</ins>, <ins style="font-weight: bold; text-decoration: none;">it can </ins>potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2860&oldid=prev 2024-04-17T03:47:14Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:47, 16 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l2">Line 2:</td> <td colspan="2" class="diff-lineno">Line 2:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a &quot;brush&quot; when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, &quot;Solid-projectile Helical coil Electromagnetic launcher&quot;, 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns one variety of [[Electromagnetic_guns|electromagnetic gun]].  They are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a &quot;brush&quot; when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, &quot;Solid-projectile Helical coil Electromagnetic launcher&quot;, 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun<ins style="font-weight: bold; text-decoration: none;">, and potentially [[Railguns#Rail_durability|reduce wear on the rail and helix]] due to decreased arcing</ins>.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The helical railgun does not require the complicated switching that a coilgun needs.  But it still has the drawback that the projectile makes contact with the barrel, unlike a coilgun which can work with a levitated projectile.  This introduces frictional losses, heating, and wear on the rails and helix.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2858&oldid=prev 2024-04-17T03:44:10Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:44, 16 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns <ins style="font-weight: bold; text-decoration: none;">one variety of [[Electromagnetic_guns|electromagnetic gun]].  They </ins>are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2857&oldid=prev 2024-04-17T03:35:40Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:35, 16 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319<del style="font-weight: bold; text-decoration: none;">]. ISBN [https://en.wikipedia.org/wiki/Special:BookSources/978-1-4244-0915-0 978-1-4244-0915-0</del>]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td></tr> </table>

Lwcamp https://www.galacticlibrary.net/mediawiki-1.41.1/index.php?title=Helical_railguns&diff=2856&oldid=prev 2024-04-17T03:34:09Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:34, 16 April 2024</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Helical railguns are a kind of railgun-coilgun hybrid.  In operation, they are basically a brushed synchronous electric motor that has been rolled out into a straight line.  In this concept, there are two rails inside the bore of a helical winding.  The helix is never directly energized except via contact with the projectile.  Current flows up one rail and into a sliding electrical contact on the projectile (called a "brush" when using electric motor terminology).  From the brush, the current is then directed into a co-axial electromagnet (which forms the armature, in the electric motor analogy).  After exiting from the electromagnet, the current passes into a circular brush around the circumference of the projectile.  This brush makes electrical contact with the helix, such that the current flows in a spiral around the helix to reach a second circular brush, which turns that portion of the helix between the two brushes into an electromagnet.  The current then passes into the second circular brush and back to another rail brush where the current exits and flows back down the other rail.  The electrically magnetized armature is attracted to or repelled from (depending on which one is in front and which is in back) the magnetic field of the energized section of the helix (which forms the stator), which accelerates the projectile down the bore<ins style="font-weight: bold; text-decoration: none;">&lt;ref&gt;T. G. Engel, J. M. Neri, and M. J. Veracka, "Solid-projectile Helical coil Electromagnetic launcher", 2007 IEEE 34th International Conference on Plasma Science (ICOPS). pp. 1789–1792. doi:[https://doi.org/10.1109%2FPPPS.2007.4346319 10.1109/PPPS.2007.4346319]. ISBN [https://en.wikipedia.org/wiki/Special:BookSources/978-1-4244-0915-0 978-1-4244-0915-0]. S2CID [https://api.semanticscholar.org/CorpusID:12419490 12419490] https://apps.dtic.mil/sti/pdfs/ADA609151.pdf&lt;/ref&gt;</ins>.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>A helical railgun uses considerably less current than a normal railgun.  As a result, much less energy is held in the magnetic field associated with the inductance of the rails.  Instead, nearly all the stored magnetic energy is in the energized portion of the helix and in the electromagnet armature.  In this way, only the parts of the device that are actively accelerating the projectile have substantial stored magnetic energy.  As a result, in theory a helical railgun can be significantly more efficient than a standard railgun.</div></td></tr> <tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l12">Line 12:</td> <td colspan="2" class="diff-lineno">Line 12:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/table&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/table&gt;</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/div&gt;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>&lt;/div&gt;</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Credit ==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Author: Luke Campbell</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== References ==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[Category:Warfare]][[Category:Physics &amp; Math &amp; Engineering]][[Category:Engineering]]</ins></div></td></tr> </table>

Lwcamp