• 25 GW Homopolar Generator Experiment 

      Zowarka, R.C.; Kajs, J.P. (IEEE, 1991-06)
      Early in the design iterations for the Balcones 60 MJ power supply different options were considered, from a single machine to modular homopolar generators (HPGs).[1] A multiple machine option was chosen to provide greater ...
    • Active Magnetic Bearings for Energy Storage Systems for Combat Vehicles 

      Pichot, M.A.; Kajs, J.P.; Ouroua, A.; Murphy, B.T.; Rech, B.; Hayes, R.J.; Beno, J.H.; Buckner, G.D.; Palazzolo, A.B. (IEEE, 2001-01)
      Advanced energy storage systems for electric guns and other pulsed weapons on combat vehicles present significant challenges for rotor bearing design, Active magnetic bearings (AMBs) present one emerging bearing option ...
    • BUS High Current Battery Model 

      Kajs, J.P.; Zowarka, R.C. (IEEE, 1993-01)
      An empirical model for voltage and equivalent series resistance (ESR) has been developed for lead acid batteries used as a pulsed power source. During the design of the battery upgraded supply (BUS) for Eglin Air Force ...
    • Design and Testing of a Flywheel Battery for a Transit Bus 

      Hayes, R.J.; Kajs, J.P.; Thompson, R.C.; Beno, J.H. (Society of Automotive Engineers, Inc., 1999)
      The University of Texas at Austin Center for Electromechanics (UT-CEM) has designed and tested a flywheel energy storage system conventionally referred to as a flywheel battery (FWB) for power averaging on a hybrid electric ...
    • Discarding Armature and Barrel Optimization for a Cannon Caliber Electromagnetic Launcher System 

      Price, J.H.; Yun, H.D.; Cook, K.G.; Kajs, J.P.; Liu, H-P.; Werst, M.D.; Kitzmiller, J.R. (IEEE, 1995-01)
      The authors detail the optimization and baseline design of the discarding metal armature and electromagnetic railgun developed for the US Army Armament Research Development and Engineering Center and US Marine Corps sponsored ...
    • Electromagnetic Force, Jerk, and Electric Gun Projectile Design 

      Zowarka, R.C.; Kajs, J.P. (, 1992-04)
      As railgun projectiles have become more sophisticated, attention is being given to railgun produced electromagnetic forces that affect the mechanical loading of the projectile. The rate at which a launch package is accelerated ...
    • High Voltage Stator for a Flywheel Energy Storage System 

      Aanstoos, T.A.; Kajs, J.P.; Brinkman, W.G.; Liu, H-P.; Ouroua, A.; Hayes, R.J.; Hearn, C.; Sargent, J.; Gill, H. (IEEE, 2001-01)
      The University of Texas at Austin Center for Electromechanics (UT-CEM) has designed and conducted component test/development for a flywheel energy storage system for pulsed loads and mobility load leveling in a tactical ...
    • A Study of Operating Modes for Compulsator Based EM Launcher Systems 

      Pratap, S.B.; Kajs, J.P.; Walls, W.A.; Weldon, W.F.; Kitzmiller, J.R. (IEEE, 1997-01)
      The compensated pulsed alternator (compulsator) is a versatile power supply capable of interfacing with the electromagnetic launcher in various ways. The method that has been explored at length with several systems is the ...