INTERIOR BALLISTICS MODELLING FOR 40 mm CASED TELESCOPED AMMUNITION

Abstract

Cased telescoped ammunition and associated cannon is a proven disruptive technology in medium calibre weapons, allowing increased lethality in a compact, multi role weapon system. From new ammunition development to support of serial production, an internal ballistics model is key to highlight design margins, support design improvement and performance increase. The architecture of the cannon and the ammunition result in a very specific internal ballistics mechanism which makes standard models unsuitable. This paper will detail the different steps of the internal ballistics cycle of the 40 mm cased telescoped ammunition and explain how each steps were studied from both theoretical and experimental point of view and aggregated to achieve the internal ballistics model of the CT cartridge.