On a Certain Method of Determining the Burning Rate of Gun Propellant

Leciejewski, Zbigniew; Surma, Zbigniew

doi:10.22211/cejem/112268

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…Table 2), it was assumed that the term Y could be considered constant and it was approximated to one. This confirms the results obtained in recent research [14]. Then, the Equation 7 was simplified as following (Equation 9):…”

Section: Pressure Inside Closed Vesselsupporting

confidence: 89%

“…It has been previously verified that the term Y can be considered equal to one, on the following examples: a 4/1 single-base propellant with cylindrical single-perforated grains and the JA-2 triple-base propellant with seven-perforated grains [14].…”

Section: Burning Ratementioning

confidence: 91%

“…Recently, a method was showed for calculating r(P), in which the simply input data are the pressure, P(t), of the propellant gases recorded during closed vessel tests and information on the shape and geometric dimensions of the pro-pellant grains [14]. The investigated propellants were a 4/1 single-base propellant with cylindrical single-perforated grains and the JA-2 triple-base propellant with seven-perforated grains. This study is a contribution to the very specific field of closed vessel of gun propellant testing and data analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The investigated propellants were a 4/1 single-base propellant with cylindrical single-perforated grains and the JA-2 triple-base propellant with seven-perforated grains. This study is a contribution to the very specific field of closed vessel of gun propellant testing and data analysis. The paper uses a new method, developed recently by another group of researchers cited above [14], for estimating the burning rate of solid propellants. The contribution of the present work concerns mainly the validation of this method for the case of spherical and flattened double base gun propellants.…”

Section: Introductionmentioning

confidence: 99%

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Estimation of the Ballistic Parameters of Double Base Gun Propellants

Boulkadid

Krai

Lefebvre

et al. 2020

Propellants Explo Pyrotec

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The burning properties of propellants are important inputs needed in ballistic simulation. A closed vessel experiment is employed to characterize the burning properties of gunpowder. The results obtained after testing in a closed vessel are exploited according to the development of the burning rate equation defined in the NATO Standardization Agreement. Recently a method for the estimating of the burning rate, r(p), of a solid propellant simply on the basis of pressure P(t), which had been recorded during closed vessel experiments, and a knowledge of the shape and geometric dimensions of the propellant grains, has been reported. This method does not need prior knowledge of the values of the thermodynamic properties (specific force and co-volume) of the propellant. It has been verified on the following examples: a 4/1 single-base propellant with cylindrical single-perforated grains and the JA-2 triple-base propellant with seven-perforated grains. In this paper, this method was corroborated for the case of spherical and flattened double base gun propellants. Additionally, based on the previous cited method, a new approach allowing the estimation of the ballistic parameters was established. Figure 11. Adherence of the model; the dotted line represents the model (Equation 12), and the continuous line indicates the experimental data (Equation 11), for the flattened propellant. (~= 0.15 g/cm 3 ).

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Section: Pressure Inside Closed Vesselsupporting

confidence: 89%

Section: Burning Ratementioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of the Ballistic Parameters of Double Base Gun Propellants

Boulkadid

Krai

Lefebvre

et al. 2020

Propellants Explo Pyrotec

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“…The components of the combustion products remain unchanged. 25 5. Heat losses during the combustion process are not considered.…”

Section: Numerical Simulation Modelmentioning

confidence: 99%

Numerical simulation of actuation processes and decoupling pyroshock of a pressure cartridge-type pin puller

Wang

Xiong

Wen

et al. 2023

Journal of Low Frequency Noise, Vibration and Active Control

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In this study, a finite element model of a pressure cartridge-type pin puller is used to simulate the actuation process and predict the actuation shock using the deflagration equation of state and the fluid-structure coupling algorithm of the MSC/Dytran. The established model is validated by comparing the simulation results with the experimental results for pressure and actuation shocks. Based on the established finite element model, the contribution of the four shock sources to the actuation shock is quantitatively decoupled by changing the state of the pin puller. The results demonstrate that the maximum shock caused by the piston impact was 7454.33 G in the analysis frequency range of 500 Hz–10 kHz. The piston impact was the primary contributor to the actuation shock, accounting for approximately 80.80%. The contribution of the shock caused by payload release was approximately 18.56%. However, the total contributions of the shock generated by the pyrotechnic charge combustion and piston cutting off the shear pin were less than 1%. The conclusions of this study can provide a reference for the structural and shock-reduction design of pressure cartridge-type pyrotechnic separation devices.

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Mathematical formulation for the numerical solution of the internal ballistics of classical weapons in Lagrangian coordinates

Kagankiewicz

Magier

2023

Continuum Mech. Thermodyn.

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Today, most design processes are carried out using specialized tools in the form of advanced computer software, but in the case of designing weapons (especially internal ballistic) it is not generally available or is even classified. On the other hand, there is no analytical system of non-linear differential equations describing the phases of the shot phenomenon in barrel weapons. Therefore, in order to obtain more accurate solutions to the system of equations, it is optimal to use numerical methods. The paper presents a theoretical description of the problem of solving the equations of internal ballistics. Based on this analysis, it was assumed that the solution to the main problem of internal ballistics formulated in Lagrange coordinates gives correct results and enables obtaining more accurate and realistic analytical solutions than using classical solutions. The utilitarian aim was to create a new program to support the design of classic gun tube weapons.

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On a Certain Method of Determining the Burning Rate of Gun Propellant

Abstract: Article is available under the Creative Commons Attribution-Noncommercial-NoDerivs 3.0 license CC BY-NC-ND 3.0.

Cited by 8 publications

References 6 publications

Estimation of the Ballistic Parameters of Double Base Gun Propellants

Estimation of the Ballistic Parameters of Double Base Gun Propellants

Numerical simulation of actuation processes and decoupling pyroshock of a pressure cartridge-type pin puller

Mathematical formulation for the numerical solution of the internal ballistics of classical weapons in Lagrangian coordinates

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