NDLI: Comparative study of railgun housings made of modem fiber-wound materials, ceramic or insulated steel plates

Content Provider	IEEE Xplore Digital Library
Author	Lehmann, P. Vo, M.D. Wenning, W.
Copyright Year	2004
Description	Author affiliation: French-German Res. Inst., Saint-Louis, France (Lehmann, P.; Vo, M.D.; Wenning, W.)
Abstract	The acceleration in electromagnetic railguns of projectiles with a mass of several hundreds of grams up to velocities ranging between 2000 m/s and 3000 m/s requires currents with intensities of several MA. In the ISL rail launchers the repulsion forces created by these currents acting on the rails of the launcher can reach values in the order of 20 MN/m. The housing of the launcher has to withstand these high mechanical stresses to maintain the rails in position and thus to keep the caliber constant. In this paper a comparative study of different possibilities of housings is presented. The limits of the actual fiber wound materials are shown and a selection of new insulating materials capable of withstanding the mechanical stresses is given. We also present the concept of a housing made of insulated steel plates allowing a good mechanical stiffness combined with a minimum loss due to eddy currents in steel. In particular, we show that the good mechanical behavior of the steel plate housing makes it possible to reach the same overall efficiency as that obtained with a fiber-wound material housing.
Starting Page	70
Ending Page	75
File Size	1657993
Page Count	6
File Format	PDF
ISBN	0780382900
DOI	10.1109/ELT.2004.1398049
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-05-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rails Insulation Building materials Electromagnetic forces Railguns Modems Ceramics Steel Acceleration Stress
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in