In the linear induction launcher (LIL), the barrel is divided into sec
tions, and each one is energized in polyphase fashion by discharging a
capacitor bank through the drive coils. The capacitor voltages and th
e frequency of the currents in the drive coils progressively increase
along the barrel, from breech to muzzle. In this paper, the transition
between the sections of a two-section launcher, designed for a muzzle
velocity of 500 m/s, is investigated with the aid of a computer simul
ation, previously validated. It is shown that the velocity is relative
ly insensitive to the location of the projectile at the transition whe
n the second section is energized; i.e., it is insensitive to the time
of energization. Also, the transitions between sections of a multi-se
ction 2 km/s launcher, where the frequencies are much higher, are stud
ied with respect to their influence on overall performance. Here again
it is shown that the muzzle velocity is insensitive to the firing tim
es of the individual sections, and to several other changes in the ope
rating conditions of the launcher.