Dust and atmospheric influence on plasma properties observed in light gas gun hypervelocity impact experiments

Estacio, Benjamin; Shohet, Gil; Young, Sean I.; Matthews, I.; Lee, Nicolas; Close, Sigrid

doi:10.1016/j.ijimpeng.2021.103833

Cited by 16 publications

(2 citation statements)

References 22 publications

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“…To understand the electrical damage to a spacecraft caused by the impact of hypervelocity meteoroids, we now study an expanding plasma composed of electrons and singly charged ions. We neglect the negative ions and dust particles as well as the multi-ion ionization possibly produced by the impact because all of these effects are so weak that they are negligible [33]. The neutrality condition is n e0 = n i0 , where n α0 are the initial number densities of the species α, with α = e, i denoting the electron and ion, respectively.…”

Section: Modelmentioning

confidence: 99%

Detecting the meteoroid by measuring the electromagnetic waves excited by the collision between the hypervelocity meteoroid and spacecraft

Liu

Zhang²,

Xu³

et al. 2022

Plasma Sci. Technol.

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The electromagnetic pulse excited by the collision between the hypervelocity meteoroid and the spacecraft is studied both numerically and theoretically. It is found that there are two kinds of electromagnetic pulse. The high-frequency electromagnetic pulse may be excited by the sum of all the electric dipoles. Each electron can be considered as an electric dipole. The low-frequency electromagnetic pulse is produced by the Langmuir oscillation of electrons. The energy flux density and the duration time of the excited low-frequency electromagnetic pulse by the meteoroid are also studied in the present paper. It is shown that the energy flux density increases as either the impact speed or the mass of the meteoroid increases. It is also shown that the duration time decreases as both the impact speed and the mass of the meteoroid increase. By measuring the strength and the duration time of the electromagnetic pulse excited by the collision between the hypervelocity meteoroid and spacecraft, we can estimate the speed and the mass of the hypervelocity meteoroid, which will be helpful in the space flight and space exploration.

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Section: Modelmentioning

confidence: 99%

Detecting the meteoroid by measuring the electromagnetic waves excited by the collision between the hypervelocity meteoroid and spacecraft

Liu

Zhang²,

Xu³

et al. 2022

Plasma Sci. Technol.

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show abstract

“…Experimental and theoretical studies were done to understand the dynamic mechanism of microjet from a grooved metal produced from hypervelocity impact [12]. The evolution of plasma and radiofrequency due to hypervelocity impacts of meteoroids and dust was studied along with the exploration of parameters in the creation of dust and its dynamics [13]. Experimental studies were conducted to study the hypervelocity impact on biopolymer-bound soil composites (BSC) at the National Aeronautics and Space Administration's (NASA) White Sands Testing Facility to verify the numerical simulations of shock physics code developed by Sandia National Laboratories [14].…”

Section: Introductionmentioning

confidence: 99%

Atomistic assessment of structural evolution for magnesium during hypervelocity nanoprojectile penetration

2022

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In the present study, the effect of ballistic penetration of a spherical projectile on a monocrystalline magnesium specimen is performed using Embedded Atom Method (EAM) potential in Molecular Dynamics (MD) simulation. The dynamic investigation of structural evolution based on common neighbor analyses and Wigner-Seitz defect analysis are carried out for the varying depth of penetration and velocities of the projectile ( v = 2 km/s, 6 km/s, and 10 km/s). It is found that the extent of amorphization in the specimen is more in the case of higher depth and lower projectile velocity. Voronoi cluster analyses are also done to identify cluster distribution and their transformation during ballistic penetration, which is accompanied by atomic strain and displacement vector evaluation to give light to the effect of shear strain and displacement of atoms respectively. According to Voronoi cluster analysis, Voronoi Polyhedra having <0,4,4,6> and <0,6,0,8> exhibits a higher population during hypervelocity projectile penetration. The findings have potential applications in hypervelocity applications such as defense and space technologies.

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Effects of projectile parameters on the momentum transfer and projectile melting during hypervelocity impact

et al. 2024

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Dust and atmospheric influence on plasma properties observed in light gas gun hypervelocity impact experiments

Cited by 16 publications

References 22 publications

Detecting the meteoroid by measuring the electromagnetic waves excited by the collision between the hypervelocity meteoroid and spacecraft

Detecting the meteoroid by measuring the electromagnetic waves excited by the collision between the hypervelocity meteoroid and spacecraft

Atomistic assessment of structural evolution for magnesium during hypervelocity nanoprojectile penetration

Effects of projectile parameters on the momentum transfer and projectile melting during hypervelocity impact

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