Investigation Into the Behavior of Armature Ejecta in Electromagnetic Launchers

Autor:	M. Crawford, David A. Wetz, D. Surls, Trevor J. Watt
Rok vydání:	2011
Předmět:	Nuclear and High Energy Physics Argon Materials science Cutting tool business.industry Electrical engineering chemistry.chemical_element Mechanics Condensed Matter Physics law.invention Railgun chemistry Aluminium law Hypervelocity business Ejecta Open section Armature (electrical engineering)
Zdroj:	IEEE Transactions on Plasma Science. 39:947-952
ISSN:	1939-9375 0093-3813
Popis:	It is hypothesized that damage to G10 railgun insulators occurs when a very concentrated stream of molten aluminum, which is ejected out of the armature-rail interface, impacts the insulators at 90° angle and acts as a cutting tool that erodes away the material. In order to test this hypothesis, access to the inside of the railgun bore has been made to visually examine the material ejected from the armatures traveling at high currents and high speeds. Peak currents around 1.75 MA were applied in the test regions, and armature velocities around 1.5 km/s were recorded as it passed by the open section of the bore. The use of an argon backfill to suppress oxidation allowed liquid aluminum streams to be observed leaving the armature-rail interface at speeds in excess of 300 m/s. Results on these and related experiments will be presented in this paper.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5de33b4516118a9acdc5b997a3db71ad https://doi.org/10.1109/tps.2010.2104163 Zobrazit plný text záznamu