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国际能源材料和化学驱动期刊
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN 打印: 2150-766X
ISSN 在线: 2150-7678

国际能源材料和化学驱动期刊

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014005356
pages 193-209

MULTIDIMENSIONAL INTERIOR BALLISTICS MODELING OF IGNITER PERFORMANCE FOR SOLID PROPELLANT GUN CHARGES

Michael J. Nusca
U.S. Army Research Laboratory, Aberdeen Proving Ground, Maryland, USA

ABSTRACT

Recent developments in the formulation of a multidimensional, multiphase interior ballistics model for solid propellant chemical propulsion used for gun charges are discussed in relation to ignition phenomena. The computational fluid dynamics model simulates primer function, propellant ignition, flamespreading, charge compression, and pressure wave generation and has been under development and validation for a number of years. During that time, the model has been successfully applied to a wide range of gun calibers. This paper discusses recent model extensions that enable the examination of the physical principles associated with bayonet or piccolo-type primers and igniters for medium and large caliber guns as well as tailboom-type igniters for mortars. The model is shown to be useful in determining the compatibility of piccolo primer configuration and energetic fill with the chemical properties of the main charge propellant in medium caliber guns. In some cases, less prompt ignition and chamber pressurization results when the chemical properties of the main propellant are altered and no change is made to the characteristics of the primer. In addition, the model can aid in determining the cause of apparent non-sequential ignition of propulsion increments in mortars and in linking such behavior to the dynamics of primer function within the mortar tailboom.


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