ETC 40-mm Gun Firings in the Low-Input-Energy Regime

Åberg, D.; Svanberg, Lars-Peter; Olsson, F.

doi:10.1109/tps.2010.2052637

Cited by 12 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(2). As T 0 rises, C will have a corresponding increase, which leads to a growth in the energy consumed by ablation and a decrease in the heat flux injected into the propellant.…”

Section: Discussionmentioning

confidence: 99%

“…Electrothermal-chemical (ETC) launch technology has drawn continuous interest for decades due to the advantages of a highly-reduced and reproducible ignition delay, a greatly-accelerated and stabilized muzzle velocity, and a high adaptability to the ambient temperature, [1][2][3] In the ETC launch device, the injected plasma is to control the pressure generated by the propellant in a combustion chamber. 4 The practicality of ETC launch devices highly depends on the miniaturization of its pulse power source, which leads to the demand for lower plasma energy.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interaction features of different propellants under plasma impingement

Jia

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

Numerical and experimental study of thermal explosions in LX-10 and PBX 9501: Influence of thermal damage on deflagration processes Anisotropic shock sensitivity for β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine energetic material under compressive-shear loading from ReaxFF-lg reactive dynamics simulationsThe development of electrothermal chemical launch technology and the effective ignition of energetic thermoplastic elastomer (ETPE) propellants all call for a thorough understanding of the plasma propellant interaction mechanism. Therefore in this work, a numerical model is developed to study this process. In this model, special attention is paid to deal with the regression of propellant surface, which is caused by plasma ablation, and is assumed to have considerable influence on the interaction process. By this model, interaction features of four propellants, including two ETPE propellants are studied with the aid of experiments, which are carried out to obtain plasma parameters utilized in the model. Surface temperature, ablation rate, and surface regression rate are obtained for different propellants under plasma impingement. Finally, the influence of propellant composition and charging voltage are analyzed. V C 2012 American Institute of Physics.

show abstract

“…(2). As T 0 rises, C will have a corresponding increase, which leads to a growth in the energy consumed by ablation and a decrease in the heat flux injected into the propellant.…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Interaction features of different propellants under plasma impingement

Jia

et al. 2012

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…In other cases of plasma ignition, heat is also considered to be the primary cause of ignition, based on experimental data [10] and numerical simulations [11]. However, the influence of plasma radiation [12], plasma pressure [13] and plasma flow-field distribution [14] are addressed in other systems. Thus, other forms of plasma energy besides heat must be considered.…”

Section: Introductionmentioning

confidence: 99%

Light Effect in Semiconductor Bridge Plasma Ignition

Zhang¹,

Li²,

Wan³

et al. 2017

Cent. Eur. J. Energ. Mater.

View full text Add to dashboard Cite

Abstract:Heat is considered to play an important role in Semiconductor Bridge (SCB) plasma ignition. Nevertheless, in this paper a non-heat effect is reported for SCB ignition of primary explosives. An initial comparison showed that there is no reasonable correlation between the ease of plasma ignition and the 5-s explosion temperature. Meanwhile the addition of Pb3O4 was found to make lead styphnate (LS) more active to SCB plasma ignition whereas the heat decomposition of this mixture was not accelerated. In terms of the phenomena mentioned above and the response of primary explosives to SCB plasma, we propose an effect of light in SCB plasma ignition. The free radical concentration change indicates that light enhances the activity of primary explosives in SCB plasma ignition. Regarding the mixture of LS and Pb3O4, the additive itself does not make LS sensitive to the SCB plasma. However, the supplement makes LS active under light exposure. As a result, the effect of light on SCB plasma ignition was confirmed by the experiments conducted in this study. This paper provides a new understanding of SCB plasma ignition from the viewpoint of explosives, which is of importance for the design of SCBs.

show abstract

“…Electric energy can be used in a gun at an even higher pressure with the objective to augment and to control parts of the internal ballistic cycle of the launch of a projectile; such techniques are called electrothermal initiation (ETI) or electrothermal-chemical (ETC) launch [8][9][10]. To launch a projectile, a high pressure has to be built up in the combustion chamber, where the pressure typically reaches 300-700 MPa.…”

Section: Introductionmentioning

confidence: 99%

Glow-to-arc transition in plasma-assisted combustion at 100 MPa

Larsson¹,

Andréasson²

2015

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

Electric energy can be added to the combustion of solid propellants in a gun in order to augment and to control parts of the internal ballistic cycle of the launch of a projectile. The pressure in the chamber and bore during launch is typically several hundred megapascal and the electric energy must be delivered to the flame at such a pressure level. To increase the understanding of the interaction between a flame and an electrical discharge at elevated pressure, experiments have been performed at 100 MPa in a combustion chamber where electric current has been conducted through the flame of a solid propellant. Pressure, voltage and current have been measured. The measured signals have been analysed and interpreted. The sequence of events has been interpreted as an initial formation of a glow-like discharge in the flame followed by a discharge mode transition to a filamentary arc discharge. The transition is shown to be dependent on the flame conductivity. For the test propellant used (Nzk5230 doped with 5% potassium nitrate), the flame conductivity is calculated to be 0.84 S m −1 and the discharge mode transition is found to occur after a dissipation of 0.2-0.4 kJ, or 11-22 kJ m −1 of electric energy, at an electric power of 0.1-0.5 MW.

show abstract

ETC 40-mm Gun Firings in the Low-Input-Energy Regime

Cited by 12 publications

References 4 publications

Interaction features of different propellants under plasma impingement

Interaction features of different propellants under plasma impingement

Light Effect in Semiconductor Bridge Plasma Ignition

Glow-to-arc transition in plasma-assisted combustion at 100 MPa

Contact Info

Product

Resources

About