Modeling and Simulation of Interior Ballistics Based on Actual Combustion Characteristics of Propellants

Liao, Xin; Zhao, Jun; Xu, Bin; Ze-shan, Wang

doi:10.1080/07370652.2013.869636

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…dibutyl phthalate and diethyl phthalate) [ 1 , 7 ]. These compounds are typically conditioned in grains that are manufactured in a wide range of colours, shapes and sizes, in order to meet specific ballistic properties [ 8 , 9 ]. Therefore, the standard procedure for SLP examination typically starts with a study of the physical aspect of the grains (and, eventually, their absorption/luminescence properties) by visual and optical techniques [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Forensic profiling of smokeless powders (SLPs) by gas chromatography–mass spectrometry (GC-MS): a systematic investigation into injector conditions and their effect on the characterisation of samples

Kesic,

McCann,

Bowerbank

et al. 2024

Anal Bioanal Chem

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Smokeless powders (SLPs) are composed of a combination of thermolabile and non-thermolabile compounds. When analysed by GC-MS, injection conditions may therefore play a fundamental role on the characterisation of forensic samples. However, no systematic investigations have ever been carried out. This casts doubt on the optimal conditions that should be adopted in advanced profiling applications (e.g. class attribution and source association), especially when a traditional split/splitless (S/SL) injector is used. Herein, a study is reported that specifically focused on the evaluation of the liner type (Ltype) and inlet temperature (Tinj). Results showed that both could affect the exhaustiveness and repeatability of the observed chemical profiles, with Ltype being particularly sensitive despite typically not being clarified in published works. Perhaps as expected, degradation effects were observed for the most thermolabile compounds (e.g. nitroglycerin) at conditions maximising the heat transfer rates (Ltype = packed and Tinj ≥ 200 °C). However, these did not seem to be as influential as, perhaps, suggested in previous studies. Indeed, the harshest injection conditions in terms of heat transfer rate (Ltype = packed and Tinj = 260 °C) were found to lead to better performances (including better overall %RSDs and LODs) compared to the mildest ones. This suggested that implementing conditions minimising heat-induced breakdowns during injection was not necessarily a good strategy for comparison purposes. The reported findings represent a concrete step forward in the field, providing a robust body of data for the development of the next generation of SLP profiling methods. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Forensic profiling of smokeless powders (SLPs) by gas chromatography–mass spectrometry (GC-MS): a systematic investigation into injector conditions and their effect on the characterisation of samples

Kesic,

McCann,

Bowerbank

et al. 2024

Anal Bioanal Chem

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Recoil reduction and projectile velocity improvement design of recoilless gun with combustible cartridge

Liu,

Wang,

Yang

et al. 2023

J Mech Sci Technol

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Study on unsteady combustion and propelling mechanism of modular charge based on Euler–Lagrange method

Yang,

Yu,

Chen

2024

AIP Advances

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This work is focused on the unsteady combustion and propelling mechanism of an energetic propellant bed by establishing a coupling three-dimensional gas–solid two-phase turbulent flow model in cooperation with the combustion model of a high energetic particle swarm and the motion model of the projectile. In addition, the comparison of the breech pressure and the pressure difference between forcing cone and breech from the experiments and simulation are carried out to verify the accuracy of the numerical model. Based on this, the propulsive properties of the propellant bed and the spatial characteristics of pressure waves in the chamber were explored to explain the combustion mechanism of the modular propellant bed and, therefore, ensure the internal ballistic safety of the artillery. Furthermore, associated with the pressure wave effect and the motion behavior of the projectile, the combustion-gas and solid propellant particles exhibit a strong unsteady flow and combustion characteristic. In addition, therefore, the strong unsteady fluctuation of the pressure field in the combustion chamber is further promoted. In fact, this phenomenon is caused by the combined effects on the initial pressure gradient produced by the unsteady combustion of the non-uniformly distributed propellant bed, the end-face stagnation effect of the chamber, the interphase drag effect, before the projectile movement, as well as the competition mechanism between the unsteady combustion of the propellant bed and the projectile movement after the projectile movement.

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Modeling and Simulation of Interior Ballistics Based on Actual Combustion Characteristics of Propellants

Cited by 5 publications

References 6 publications

Forensic profiling of smokeless powders (SLPs) by gas chromatography–mass spectrometry (GC-MS): a systematic investigation into injector conditions and their effect on the characterisation of samples

Forensic profiling of smokeless powders (SLPs) by gas chromatography–mass spectrometry (GC-MS): a systematic investigation into injector conditions and their effect on the characterisation of samples

Recoil reduction and projectile velocity improvement design of recoilless gun with combustible cartridge

Study on unsteady combustion and propelling mechanism of modular charge based on Euler–Lagrange method

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