The impulsive acceleration of active protection elements such as armor plates or other terminal ballistics interception devices can preferably be realized by single-stage electromagnetic launcher systems using pancake coils. The technology with controlled multipartite coil assemblies represents a new supplementary topic in the entire field of ballistics with a high growth potential which is not yet exhausted.During the year 1999 a separate test facility with modular structured energy packs (3 50 kJ) has been built up at ISL as a basic installation for testing reinforced or armored coils and multiple-coil systems. Each power supply module comprises one energy storage capacitor, a thyristor stack adapted to maximum charging voltage, a corresponding number of crow-bar diodes and a well-designed coaxial power line serving as a pulse forming network and current limiting reactor. To provide high flexibility these modules can be triggered independently by fiber optic transmitters with an overall jitter lower than 50 ns. Three packs are designed for a maximum charging voltage of 10.75 kV. First measurements have shown that peak currents up to 120 kA per module and current slew rates of more than 2.5 kA/ s can be generated.The paper presented here describes the test facility and the prototype arrangement of a steerable launcher system with two orthogonally assembled pancake coils fed by two of the modular pulsed power supply units described above. The selection of the launch direction is defined by a short delay (only a few microseconds) between the trigger pulses, so that the usual propagation delay time implied by (mechanical) inertia will be avoided. Further on the first investigations and results concerning steerability and electromechanical efficiency will be presented.
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