Concept for a new light-gas gun type hypervelocity accelerator

Putzar, Robin; Schaefer, Frank

doi:10.1016/j.ijimpeng.2015.09.009

Cited by 16 publications

(7 citation statements)

References 29 publications

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“…Space exploration is constantly driving experimental and technical development toward higher velocities for μm to cm-sized objects for studies of protection against hypervelocity meteorites and debris, using not only gas-based technology but also electromagnetic systems or a combination of both (32)(33)(34)(35). Plate impact experiments have become the gold standard for testing in the field of shock physics.…”

Section: Introduction: From Macroscale To Microscale Impactsmentioning

confidence: 99%

High-velocity micro-projectile impact testing

Veysset

Lee

Hassani

et al. 2021

Applied Physics Reviews

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High-velocity microparticle impacts are relevant to many fields from space exploration to additive manufacturing and can be used to help understand the physical and chemical behaviors of materials under extreme dynamic conditions. Recent advances in experimental techniques for single microparticle impacts have allowed fundamental investigations of dynamical responses of wide-ranging samples including soft materials, nano-composites, and metals, under strain rates up to 10 8 s -1 . Here we review experimental methods for high-velocity impacts spanning 15 orders of magnitude in projectile mass and compare method performances. Next, we present a review of recent studies using the laser-induced particle impact test technique comprising target, projectile, and synergistic target-particle impact response. We conclude by presenting the future perspectives in the field of high-velocity impact. FIG. 1. Impact testing techniques and applications, along with lines of constant characteristic strain rates. All-capital labels are associated with shaded regions of the same color.

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Section: Introduction: From Macroscale To Microscale Impactsmentioning

confidence: 99%

High-velocity micro-projectile impact testing

Veysset

Lee

Hassani

et al. 2021

Applied Physics Reviews

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“…В данном исследовании угол наклона ударной волны измерялся по теневым картинам гиперзвукового обтекания моделей. В результате расчетов по формуле (4) получены значения M 1 = 18 для конуса с углом полураствора τ 1 = 3 • (рис. 4) и M 2 = 14.4 для конуса с углом полураствора τ 2 = 12 • (рис.…”

Section: результаты экспериментов и обсуждениеunclassified

“…Для решения задач экспериментального моделирования высокоскоростного удара разработаны и успешно используются различные конструкции легкогазовых пушек, способных обеспечить разгон ударников сравнительно большой массы до скоростей, сопоставимых с первой космической скоростью. Условия проведения этих экспериментов (в частности, параметры рабочего газа) схожи с условиями исследования гиперзвуковых течений, поэтому определенные конструкции легкогазовых пушек при замене канала разгона на сопло Лаваля могут применяться для получения гиперзвуковых потоков с целью визуализации и диагностики гиперзвукового обтекания тел [1][2][3][4]. Начиная с 40-х годов прошлого века, получено множество экспериментальных данных, касающихся способов формирования, особенностей течения и методов исследования характеристик сверх-и гиперзвукового обтекания тел различных геометрий [5][6][7][8][9][10][11][12][13][14][15][16], а также накоплен большой теоретический материал [17][18][19].…”

Section: Introductionunclassified

Диагностика Полей Плотности Фотометрическим Теневым Методом При Гиперзвуковом Обтекании Конуса В Легкогазовой Баллистической Установке

Храмцов¹,

Васецкий²,

Грищенко³

et al. 2019

Журнал Технической Физики

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A new method of hypersonic flow generation is proposed and the results of an experimental study of hypersonic flow past cones with half-angles = 3° and = 12° are presented. The Mach numbers of the studied incident flows were = 18 ( = 3°) and = 14.4 ( = 12°). The use of a light-gas facility, where an accelerating channel was replaced with Laval nozzle, allows us to obtain a hypersonic outflow with optical density sufficiently high for flow visualization and diagnostics with the help of optical methods. The flow structure was visualized by means of the shadow method using the Foucault knife and the slit. Shadowgraphs were recorded by a high-speed camera with a frame rate of 300,000 fps and an exposure time of 1 µs. The Mach number for the incident flow was calculated from the inclination angle of the shock wave on shadowgraphs.

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“…In this case, some types of guns with the replacement of the accelerating channel by the Laval nozzle can be effectively used to study hypersonic flows around bodies, since the parameters of the working gas required for high-speed throwing and generation of a hypersonic air flow are identical. High-speed throwing system parameters and technical requirements are described in [1][2][3][4][5]. Since the 40s of the 20th century the generation of hypersonic flows, development of measurement methods and study of such flows structure over various test bodies were carried out by researchers from all over the world [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Hypersonic Conic Flows Generated by Magnetoplasma Light-Gas Gun Equipped with Laval Nozzle

Khramtsov¹

2022

Hypersonic Vehicles - Applications, Recent Advances, and Perspectives

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This chapter introduces new approach of hypersonic flow generation and experimental study of hypersonic flows over cones with half- angles τ1 = 3◦ and τ2 = 12◦. Mach number of the of the incident flow was M1 = 18. Visualization of the flow structure was made by the schlieren method. Straight Foucault knife was located in the focal plane of the receiving part of a shadow device. Registration of shadow patterns was carried out using high- speed camera Photron Fastcam (300 000 fps) with an exposure time of 1 μs. The Mach number on the cone was calculated from inclination angle of shock wave in the shadowgraph.

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Concept for a new light-gas gun type hypervelocity accelerator

Cited by 16 publications

References 29 publications

High-velocity micro-projectile impact testing

High-velocity micro-projectile impact testing

Диагностика Полей Плотности Фотометрическим Теневым Методом При Гиперзвуковом Обтекании Конуса В Легкогазовой Баллистической Установке

Investigation of Hypersonic Conic Flows Generated by Magnetoplasma Light-Gas Gun Equipped with Laval Nozzle

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