9 MJ Range Gun Compulsator Stator Design and Fabrication

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Herbst, J.D.
Cook, K.G.
Kuenast, R.A.
Pratap, S.B.
Thompson, R.C.
Yun, H.D.

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The authors provide a summary of the structural analysis of the compulsator stator as well as a detailed description of the major stator components. Fabrication and assembly techniques are also presented, along with the current status of the project. The range gun compulsator is a self-excited, air-cored alternator designed to provide pulsed power in a field portable electromagnetic launch system capable of accelerating a salvo of nine projectiles to a muzzle energy of 9 MJ at velocities ranging from 2.5 to 4.0 km/s. The compulsator is designed to deliver 3.2 MA current pulses to a railgun launcher at a peak power rating of 10 GW. The stator consists of a multiturn compensating winding with a laminated stainless steel support structure, an aluminum excitation field coil and support structure, a stainless steel stator casing and main end plates, hydrostatic bearings, seals, and support pedestals, and current collection mechanisms for the field excitation and main armature circuits


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J.D. Herbst, K.G. Cook, R.A. Kuenast, S.B. Pratap, R.C. Thompson, H.D. Yun, “9 MJ range gun compulsator stator design and fabrication,” IEEE Transactions on Magnetics, vol. 29, no. 1, Jan. 1993, pp. 986-991.