The Charge Designer's Workbench: A Range of Interior Ballistic Modeling Tools

Horst, Albert W.; Nusca, Michael J.

doi:10.21236/ada451393

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…There are many interior ballistic models historically [3,11] . Three levels of interior ballistic models employed are the IBHVG2 lumped-parameter interior ballistic code; the XKTC one dimensional (1-D), two-phase flow interior ballistic code; and NGEN3 multidimensional, two-phase flow interior ballistic code.…”

Section: Interior Ballistic Simulationmentioning

confidence: 99%

A Novel Interior Ballistic Prediction of Gun Propellants Based on Experimental Pressure-Apparent Burning Rate Model in Closed Vessel

Xiao

Ying

et al. 2013

AMR

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A new experimental pressure-apparent burning rate model was established based on the recorded pressure-time data in the closed vessel to study the actual burning gas generate rate of a propellant whose form function is not available. The new burning model can replace the Vieille’s law and form function of propellants in the interior ballistic equations to predict the interior ballistic performance of gun. As distinct from the traditional geometric form function based burning rate model, the new model introduced the concept of relative pressure impulse related to the actual burnt web thickness of propellant statistically. The apparent burning rate was expressed by the propellant mass fraction burnt vs. relative pressure impulse curve. The interior ballistic simulation of selected gun propellants was conducted using the new burning rate model. The results predicted by the new model show a good agreement with the classic interior ballistic predication results though the agreement with the experimental results is still to be improved.

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Section: Interior Ballistic Simulationmentioning

confidence: 99%

A Novel Interior Ballistic Prediction of Gun Propellants Based on Experimental Pressure-Apparent Burning Rate Model in Closed Vessel

Xiao

Ying

et al. 2013

AMR

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“…In the case where 2e 1 > 2e 2 , the propellant grains will fracture but not burnout, and then are likely to be ejected from barrel after shot exit [14]. For this reason, in this paper, only two cases 2e 1 = 2e 2 and 2e 1 < 2e 2 are considered.…”

Section: Analysis Of Simulation Modelmentioning

confidence: 99%

Multi‐Objective Optimization of Interior Ballistic Performance Using NSGA‐II

Zhang

2011

Propellants Explo Pyrotec

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This paper investigates an interior ballistic design with equal and unequal web thicknesses of seven-perforation propellant grains using optimization methods. In order to reveal the influence of the web thickness of the propellant grains on the overall interior ballistic performance, burning seven-perforation propellant grains with both equal and unequal web thickness is modeled. A currently popular evolution algorithm (EA) is used to compare two charge shapes, and to seek which one could achieve the optimal ballistic performance. Complete optimization of the interior ballistic performance is a complex process in view of the conflicting objectives to be achieved and a solution to such problems is sought by converting them into a single composite objective and using many tedious measurements. In this paper, a true multi-objective optimization of the interior ballistic charging design is carried out by considering three objectives simultaneously. The non-dominated sorting genetic algorithm version II (NSGA-II) is used to solve this multi-objective optimization problem (MOP). In order to check its implementation, both the conventional optimization algorithm-hill climbing method (HCM) and NSGA-II are used to solve the same single objective problem. The NSGA-II used to capture the full Pareto-optimal front is capable of identifying the trade-off among the conflicting objectives thereby providing alternative useful designs for a designer. Furthermore, for seven-perforation propellant grains, the results of using equal web thickness are compared with those of unequal web thickness, and it is shown that the two charge shapes produce no distinct difference in the interior ballistic performance.

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“…Their study has demonstrated the value of the hierarchy of interior ballistic codes: An excellent agreement has been shown in prediction of maximum pressures using all three codes (IBHVG2, XKTC and NGEN3); A good agreement has been shown in the nature of pressure-wave simulations provided by XKTC and NGEN3; NGEN3 provided detailed insight into the controlling processes and interactions. Horst et al [5] have simulated a generic gun/propelling charge configuration using a range of interior ballistic models. XKTC and NGEN predicted temporary pressure-waves with the base pressure bigger than the breech pressure.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on Properties of Interior Ballistics According to Solid Propellant Position in Chamber

Jang

Sung

Yoo

et al. 2011

ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D

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Analysis of the interior ballistics is essential for the development of gun or propellant configurations. The granular solid propellants with high energy and fast burning rate produce a large thrust in extremely short time intervals. For the study of these, therefore, it is necessary of a numerical code for the two-phase flow of the interior ballistics. Recently, an interior ballistics code (IBcode) for the two-phase flow using the Eulerian-Lagrangian approach has been developed. The SIMPLE algorithm and the SMART scheme have been used for the IBcode. The ghost-cell extrapolation method has been used for the moving boundary with the projectile movement. In this study, a performance of the interior ballistics according to the position of the solid propellant in the chamber has been investigated using the IBcode. In previous researches, propellants had been evenly distributed in the chamber. In this study, however, three cases of the existence of empty space in the chamber at which the propellants are not evenly distributed have been considered; Propellants are located in the region near the base, propellants in the region near the breech, and propellants in the center of the chamber, respectively. The 7-perforated configuration of the solid propellant has been used in this research. The results have shown the performance variations of the interior ballistics according to solid propellant position in the chamber. The cases of the propellants located in the region near the base and breech have shown that the value of the negative differential pressure and the difference between the breech pressure and the base pressure are much higher than those of the propellants located in the center of the chamber. The case of the propellants in the center of the chamber is, therefore, more profitable to improve the performance of the interior ballistics.

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The Charge Designer's Workbench: A Range of Interior Ballistic Modeling Tools

Cited by 11 publications

References 4 publications

A Novel Interior Ballistic Prediction of Gun Propellants Based on Experimental Pressure-Apparent Burning Rate Model in Closed Vessel

A Novel Interior Ballistic Prediction of Gun Propellants Based on Experimental Pressure-Apparent Burning Rate Model in Closed Vessel

Multi‐Objective Optimization of Interior Ballistic Performance Using NSGA‐II

Numerical Study on Properties of Interior Ballistics According to Solid Propellant Position in Chamber

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