Design and Development of Extremely High Velocity Electromagnetic Launch Accelerators--GEDI program

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Upshaw, J. L.
Zowarka, Jr, R. C.
Cook, R. W.
Weeks, D. A.

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Research is described that has centered around 1, 2, or 8 m long, 12.7 mm square-bore railguns powered by one or more of the following power supplies: a 1 MJ capacitor-bank-driven, pulse-forming network; a 6 MJ homopolar-generator (HPG)-charged coaxial inductor; or one or more of six 10 MJ Balcones-HPG-charged coaxial inductors. Several variations of the 1 and 2 m-long railguns were designed, fabricated, and tested. Railgun design parameters, development, and some test results are described. Parameters of primary importance in designs include sidewall insulator and rail materials; gun length and outer structure materials; stiffness and strength; ease of assembly and disassembly; and availability of methods for supporting, straightening, and honing the guns. Both static and dynamic aspects of railgun structural behavior are discussed


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J.L. Upshaw, R.C. Zowarka Jr., R.W. Cook, and D.A. Weeks, “Design and development of extremely high velocity electromagnetic launch accelerators -- GEDI program,” IEEE Transactions on Magnetics, vol. 25, no. 1, January 1989, pp. 568-573.