Modeling enhanced gas generation rates in a 155 mm ETC gun

Woodley, Clive; Billett, S. J.

doi:10.1109/20.911822

Cited by 17 publications

(5 citation statements)

References 3 publications

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“…2) On the ground of the p-t curve measured by closed bomb test and the burning rate formula shown in equation (10), the relationship between burned thickness and time can be acquired.…”

Section: Determination For the Equivalent Form Function Of Fractured mentioning

confidence: 99%

“…So the bore pressure at the initial stage of ballistic surges and exceeds the tube failure stress, which causes the breech blow. Namely: cryogenic propellant charge [9] -extrusion breaking -surface increasing -pressure rising [10] -breech blowing. How to determine the fragmentation degree of propellant at the bottom of projectile at the igniting moment is the key to the propellant launch safety evaluation [11,12].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Method for Gas Generation Law Calculation of Fractured Propellant Charge

Rui

Wang

et al. 2018

Propellants Explo Pyrotec

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Aimed at the problem that the gas generation law of fractured propellant charge cannot be calculated by geometry method accurately due to various shapes and sizes of fractured propellant charge, a method for calculating the equivalent form function of fractured propellant charge based on the initial dynamic vivacity ratio theory is proposed. The equivalent form functions of propellant charge with different fracture degrees are deduced from this method on the basis of the initial dynamic vivacity ratio test results. Based on the equivalent form functions of propellant charge with different fracture degrees, the relationship between the maximum bore pressure in tank gun and the initial dynamic vivacity ratio of the fractured propellant charge at the bottom of projectile is established, which lays a theoretical foundation for the criteria of propellant charge launch safety.

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“…2) On the ground of the p-t curve measured by closed bomb test and the burning rate formula shown in equation (10), the relationship between burned thickness and time can be acquired.…”

Section: Determination For the Equivalent Form Function Of Fractured mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Method for Gas Generation Law Calculation of Fractured Propellant Charge

Rui

Wang

et al. 2018

Propellants Explo Pyrotec

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“…Its main drawback is the relatively long time required for the ignition energy delivery. The conventional black powder ignition method can be updated by applying new materials (e.g., [1][2][3]) or by applying other ignition systems such as the plasma jet or current injection [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] as well as laser ignition [23][24][25][26][27][28]. Plasma jet ignition (PJI) is characterised by the very short time required for energy delivery.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Application of Plasma Ignition in Closed Vessel Tests

et al. 2021

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This paper presents the results of a comparative investigation into the effects of the ignition method on the ballistic properties of three types of propellants: a single-base propellant, a double-base propellant and a low vulnerability (LOVA) propellant, as determined via closed vessel tests (CVT). Conventional gunpowder ignition and plasma jet ignition methods were used. The influence of the ignition method on the values of the propellant characteristics obtained in CVT was analysed. It was found that the method of ignition has an influence on the values of propellant characteristics, determined in CVT. An analysis of the experimental form functions showed that plasma ignition is not a solution to the problems inherent to the process of determining the ballistic properties of propellants in which the burning process deviates from the geometric burning law.

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“…Also, some works are devoted to model the PPI process empirically, especially focusing on the prediction and comparison of the burning rate for different propellants. It is reported that the plasma jet can dramatically increase the burning rate [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Study of the enhanced burning rate during the plasma-propellant interaction process

Wang

Yang

Fan

et al. 2019

J. Phys. D: Appl. Phys.

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Plasma ignition technology has been widely used for decades due to its great improvement in enhanced burning rate. However, the interaction process between the plasma jet and the solid propellant is still far from being elucidated. In this paper, coupling the flow model of plasma jet and the chemical reaction model of propellants, a more comprehensive model for predicting the plasma enhanced burning rate is presented. Three types of energetic thermoplastic elastomers propellant are involved. In addition, the closed bomb vessel test is conducted to investigate the burning characteristics of propellant under the action of plasma for comparison. It demonstrates that the enhanced combustion phenomenon of propellants in the experiment can be well described by an enhanced burning rate coefficient epsilon calculated with the model, which could reflect the effect of plasma jet to some extent. The results show that the composition of the energetic material and its surface temperature are the key factors influencing the plasma-enhanced combustion. This model would bring some insight on the interaction mechanisms between plasma and different propellants.

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Modeling enhanced gas generation rates in a 155 mm ETC gun

Cited by 17 publications

References 3 publications

A Novel Method for Gas Generation Law Calculation of Fractured Propellant Charge

A Novel Method for Gas Generation Law Calculation of Fractured Propellant Charge

Analysis of Application of Plasma Ignition in Closed Vessel Tests

Study of the enhanced burning rate during the plasma-propellant interaction process

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