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Feasibility of intercalated graphite railgun armaturesGraphite intercalation compounds may provide an excellent material for the fabrication of electro-magnetic railgun armatures. As a pulse of power is fed into the armature the intercalate could be excited into the plasma state around the edges of the armature, while the bulk of the current would be carried through the graphite block. Such an armature would have the desirable characteristics of both diffuse plasma armatures and bulk conduction armatures. In addition, the highly anisotropic nature of these materials could enable the electrical and thermal conductivity to be tailored to meet the specific requirements of electromagnetic railgun armatures. Preliminary investigations were performed in an attempt to determine the feasibility of using graphite intercalation compounds as railgun armatures. Issues of fabrication, resistivity, stability, and electrical current spreading are addressed for the case of highly oriented pyrolytic graphite.
Document ID
Document Type
Technical Memorandum (TM)
Gaier, James R.
(NASA Lewis Research Center Cleveland, OH., United States)
Gooden, Clarence E.
(Air Force Armament Lab. Eglin AFB, FL., United States)
Yashan, Doreen
(Cleveland State Univ. OH., United States)
Naud, Steven
(Naval Coastal Systems Center Panama City, FL., United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1990
Subject Category
Nonmetallic Materials
Report/Patent Number
NAS 1.15:102546
Meeting Information
Meeting: Symposium on Electromagnetic Launch Technology
Location: Fort Walton Beach, FL
Country: United States
Start Date: April 2, 1990
End Date: April 5, 1990
Sponsors: IEEE
Accession Number
Funding Number(s)
PROJECT: RTOP 506-41-41
Distribution Limits
Work of the US Gov. Public Use Permitted.
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