• Pulsed Power Requirements for EM Launchers 

      Weldon, W.F.; Woodson, H.H. (IEEE, 1984-03)
      Both linear (railgun) and coaxial (mass driver, etc.) electromagnetic launchers (EMLs) are treated as time-varying impedances to determine the relationships between acceleration force, payload velocity, and power supply ...
    • A Compulsator Driven, Rapid-Fire EM Gun 

      Pratap, S.B.; Bird, W.L.; Godwin, G.L.; Weldon, W.F. (IEEE, 1984-03)
      A compulsator-driven railgun is an attractive alternative to the homopolar generator-inductor-switch configuration, especially for repetitive duty. A conceptual design of a rapid-fire EM-gun system is presented. The generator ...
    • Hydraulic Power Transmission Applications in Pulsed Inertial Energy Storage Generators 

      Price, J. H.; Vaughn, M. R.; Aanstoos, T. A. (, 1984-10)
      Pulsed inertial energy storage generators such as homopolar generators, compensated pulsed alternators, and rotary flux compressors must be motored to relatively high, precisely controlled speeds at power levels of several ...
    • Hypervelocity Electromagnetic Gun Development at CEM-UT 

      Zowarka, R.C.; Weldon, W.F.; Aanstoos, T.A. (, 1985)
      Interest in railguns at the Center for Electromechanics at The University of Texas at Austin (CEM-UT) was the result of a visit to the railgun facility at the Australian National University (ANU) at Canberra in 1979. Soon ...
    • Welding and Billet Heating with Hompolar Generators 

      Walters, J. B.; Aanstoos, T. A. (American Society for Metals, 1985-04)
    • Homopolar Generator Charged Inductors 

      Driga, M. D.; Nalty, K. E.; Zowarka, R. C.; Aanstoos, T. A.; Wu, A. Y.; Weldon, W. F. (IEEE, 1985-06)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has carried out several major experimental programs using homopolar generator (HPG)-charged inductors; namely, the fast discharge experiment ...
    • High Current Coaxial Pulse Transformer for Railgun Applications 

      Pappas, J.A.; Driga, M.D.; Weldon, W.F. (IEEE, 1985-06)
      A high-current air-core pulse transformer has been designed and fabricated. Its purpose is to reduce the output impedance (nominally 100 mn) of a 50-kJ, 1,000-~F capacitor bank for application to loads with impedances of ...
    • High Pressure Acceleration of an Arc-Driven Metal Slug in a Railgun 

      Peterson, D.R.; Fowler, C.M.; Kerrisk, J.F. (IEEE, 1985-06)
      The successful acceleration in a railgun of an intact, arc-driven metal slug subjected to a peak pressure of - 0.7 GPa is described. The techniques and principles of accelerating metal slugs at very high pressures are ...
    • A Compulsator-Driven Rapid Fire Railgun System 

      Pratap, S.B.; Spann, M.L.; Brinkman, W.G.; Werst, M.D.; Vaughn, M.R. (, 1985-06)
      A compensated pulsed alternator (compulsator) is an attractive alternative to the homopolar-inductor switch system as a power source for a rapid-fire railgun. The design of the compulsator and a few other components of the ...
    • Switch Development At UT-CEM 

      Peterson, D.R.; Zowarka, R.C.; Rech, B.M. (IEEE, 1985-06)
      Two reusable (with replacement of a few expendable components), fast (tens of microseconds), megampere switches operated with commercially available explosive charges suitable for indoor laboratories are described. One is ...
    • Final Design and Manufacture of a Modular Sixty Megajoule Pulsed Homopolar Generator Power Supply 

      Noble, W. L.; Aanstoos, T. A. (IEEE, 1986)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has designed and built high-energy pulsed homopolar generators (HPG's) since 1972. A 5-megajoule (MJ) disc-type HPG was built and tested in 1974 ...
    • High Speed, High Current, Copper-Finger Brushes for Pulsed Homopolar Generator Service 

      Walls, W. A.; (IEEE, 1986-03)
      ln continuing research into higher energy density, higher current rated pulsed homopolar generators (HPG's), solid copper fingers are explored as sliding electrical contacts to slip speeds of 300 m/s and collector area ...
    • Railgun Current Density Distributions 

      Long, G. C.; (IEEE, 1986-11)
      A closed form solution for the magnetic field intensity and current density in an electromagnetic railgun is presented for a simple geometrical design. A constant velocity for the armature and constant material properties ...
    • A Rapid Fire, Compulsator-Driven Railgun System 

      Spann, M.L.; Pratap, S.B.; Brinkman, W.G.; Perkins, D.E.; Thelen, R.F. (IEEE, 1986-11)
      It is becoming clear that compensated pulsed alternators (compulsators) are the preferred power supply for rapid-fire railgun systems. High efficiencies, inherently high repetition rates, and the elimination of high current ...
    • Observation and Analysis of Current Carrying Plasmas In a Railgun 

      Cook, R. W.; (IEEE, 1986-11)
      Observation of current-carrying plasma arcs driving solid projectiles in round-bore and square-bore railguns have been made with magnetic induction coils. Both free-running precursor arcs as well as projectile armature ...
    • Self Excitation of Iron Core Homopolar Generators 

      Perkins, D.E.; Nalty, K.E.; Walls, W.A. (IEEE, 1986-11)
      In the interest of reducing homopolar generator (HPG) auxiliary requirements, a self-excited field coil for pulsed duty, iron-core HPG has been developed and tested at the Center for Electromechanics at The University of ...
    • Final Manufacture and Assembly of a Modular 60 Megajoule Pulsed Homopolar Power Supply 

      Noble, W L.; Weldon, J.M.; Gully, J.H. (IEEE, 1986-11)
      The Center for Electromechanics at the University of Texas at Austin (CEM-UT) has contracted Parker Kinetics Designs Inc. (PKD) to manufacture and install a modular 60 megajoule pulsed homopolar generator power supply ...
    • System Design of the Ultrahigh Velocity GEDI Experiment 

      Laughlin, R. L.; Gully, J. H.; Nalty, K. E.; Zowarka, Jr, R. C. (IEEE, 1986-11)
      System and component design for the ultrahigh velocity, guided electromagnetic defensive interceptor (GEDI) experiment is underway and initial fabrication has begun. Figure 1 is an artist's sketch of the experimental ...
    • Recoil in Electromagnetic Railguns 

      Weldon, W. F.; Driga, M. D.; Woodson, H. H. (IEEE, 1986-11)
      Gun designers have long accepted and understood the fact that guns experience recoil when fired, and many ingenious mechanisms have been devised to cope with the problem. But hope springs eternal, and when confronted with ...
    • Final Design of the Control and Auxiliary Systems for the Balcones 60 MJ Homopolar Pulsed Power Supply 

      Hildenbrand, D. J.; Pichot, M. A.; Price, J. H. (IEEE, 1986-11)
      The Center for Electromechanics at The University of Texas at Austin (CEM-UT) has completed the final design of a 60 megajoule (MJ) laboratory pulsed-power facility. Six identical 10-MJ homopolar generators are utilized ...