Analysis of distributed energy railguns to suppress secondary arc formation

Ryan W. Karhi, John J. Mankowski, Magne Kristiansen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

An investigation into arc splitting at distributed energy feed locations is presented. Distributed energy scheme experiments conducted at Texas Tech University reveal secondary arc formation by arc splitting at distributed current feeds. At these locations, dynamic magnetic pressure regions are believed to perturb the plasma and lead to its division into two separate current carrying bodies. Continuing research into this hypothesis and viable methods of prevention are discussed. A two stage distributed energy railgun is utilized for this analysis. Diagnostics including armature B-dots and a photodiode array facilitate an understanding of the plasma dynamics in the complex multi-stage railgun environment. The length of the freerunning plasma arc allegedly is believed to be a contributing parameter into the arc splitting phenomenon. These luminosity data collected from the photodiodes provides an arc length measurement of the light emitting particles within the plasma body. This length is observed to expand and contract in accordance with the corresponding magnetic pressure present within the railgun bore.

Original languageEnglish
Title of host publication2008 14th Symposium on Electromagnetic Launch Technology, EML, Proceedings
Pages444-449
Number of pages6
DOIs
StatePublished - 2008
Event2008 14th Symposium on Electromagnetic Launch Technology, EML - Victoria, BC, Canada
Duration: Jun 10 2008Jun 13 2008

Publication series

Name2008 14th Symposium on Electromagnetic Launch Technology, EML, Proceedings

Conference

Conference2008 14th Symposium on Electromagnetic Launch Technology, EML
CountryCanada
CityVictoria, BC
Period06/10/0806/13/08

Keywords

  • Distributed
  • Plasma
  • Railguns
  • Restrike

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