Comparisons of internal ballistics simulations of 40mm gun firings

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(Клайв Вудли, Ален Carriere, Патрис Франко, (и др.). Сравнительный анализ внутрибаллистического моделирования стрельбы 40-мм пушки).Scientific article. International symposium on ballistics, Tarragona, Spain, 2007 – 9 p.Organizations from France, Germany and the UK are participating in a EUROPA Technical Arrangement (TA) research programme on Ignition Phenomena. The technical objectives of this programme are to study the ignition and combustion of conventional and novel solid propellants by conventional igniters, pyrotechnic igniters and plasma. A key part of the project is the development and incorporation of improved ignition and combustion submodels into internal ballistics codes in order to simulate ignition phenomena. Previous work compared simulations of a theoretical test case, known as the AGARD gun, which used granular propellant. The codes included one-dimensional (1D) and two-dimensional (2D) two-phase flow models. Further work has been conducted simulating 40mm gun firings that used a triple base propellant in slotted tubular geometry. This paper describes the 40mm gun firings, the codes, the propellant heating and ignition submodels and compares the predicted and measured results.Contents: Introduction. 40mm gun firings. Input data. Description of codes. Comparison of predicted results. Conclusions and further work.