UK electric gun national overview

This paper reviews the current state of electric gun research at the UK Defence Evaluation and Research Agency (DERA). A decade or so of paper studies and experimental trials have led to this point, and the future can be faced with the real prospect of practical weapon systems appearing on the battlefield of the future. Both electrothermal-chemical (ETC) and electromagnetic (EM) research are covered, outlining the emphasis in both areas and summarizing progress achieved. In EM trials, shots at over 2000 ms^-1 have become commonplace, and the examination of recovered armatures has paid dividends in reducing the mass thereof, as well as confirming theoretical predictions. Work has begun to determine the in-bore forces on both the shot and the launcher-factors that read directly into improved designs. ETC research continues to develop the fundamental knowledge base required for the optimum design of ETC guns whilst the scope for gun system improvements based upon current knowledge is explored. Progress has been made toward a more complete understanding of plasma generators, the plasmas they produce and the interaction of plasma with propellant. A better understanding of these areas remains a goal of the ETC programme. The ability to evaluate ETC concepts has been enhanced by the commissioning and development of a 155 mm, 52 calibre experimental ETC gun