Reduction in fluctuation of the accelerating force in linear induction launchers

A. Balikci, Z. Zabar, D. Czarkowski, L. Birenbaum

Research output: Contribution to journalArticlepeer-review


In a linear induction launcher, both the barrel and the projectile are of finite length. This causes the force-displacement curve to have a jagged shape. The reasons are: the barrel is partitioned into sections; end effects are present; dc components exist in the input currents; and the drive coils are of finite width. The first three factors were dealt with in our previous publications. This paper describes how to improve the performance of a four-section linear induction coil launcher, powered by synchronous generators, by redesigning the drive coils so that they may be fed by a five-phase source rather than the customary three. The paper presents the drive-coil design criteria, the reasoning behind the selection of the firing sequence for each of the four sections, and the improved accelerating force curve.

Original languageEnglish (US)
Pages (from-to)97-102
Number of pages6
JournalIEEE Transactions on Magnetics
Issue number1 I
StatePublished - Jan 2003


  • Coil launchers
  • Efficiency
  • Linear induction launchers
  • Polyphase currents

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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