Design and Experiment of a Flat-Plate Magnetic Reconnection Launcher With Multi-Layer Horizontal-Winding Rectangle Coil

Recently, effectively improving the energy conversion efficiency (ECE) of electromagnetic launch (EML) systems has been one of the most pressing problems facing engineering applications in defense technology, transportation, and so on. This article offers a solution to directly increase the inductance gradient (
$L ^{\prime} $
) to improve the efficiency of the electromagnetic reconnection launcher (EMRCL) system. First, three types of coils were fabricated, and the inductance was measured by LCR bridge meter. Next, to verify the performance of these coils, a five-stage launch platform was built, and the experiment results are consistent with the simulation models. The experimental results showed that
$L ^{\prime} $
of the double-layer horizontal-winding coil could reach 251
$\mu \text{H}$
/m, which is 3.5 times that of the single-layer vertical-winding coil. The region greater than 100
$\mu \text{H}$
/m accounts for 70% of the coil length, and the efficiency is 2.5 times that of the double-layer vertical-winding coil,
$\sim 1.21$
% with a payload of 11.5 kg. This indicates that the winding method with an improved
$L ^{\prime} $
may meet the lower current and higher efficiency requirements of the EMRCL system.