Electromagnetic launcher for heavy projectiles

Kozlov, A.; Котов, А. В.; Polistchook, V.P.; Шурупов, А. В.; Shurupov, M. A.

doi:10.1088/1742-6596/927/1/012027

Cited by 3 publications

(4 citation statements)

References 2 publications

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“…В настоящей работе в основном обсуждаются эксперименты по метанию в МПУ ударников массой m b до 3 g. Наши эксперименты по метанию " тяжелых" ударников массой 15 g описаны в работе [13]. В работе [14] представлены результаты метания дюралевых ударников массой 60−90 g в рельсотроне с " твердым" якорем.…”

Section: экспериментальная установкаunclassified

“…Аналогичные повреждения центрального участка канала МПУ приведены в работе [13]. Время прохождения МТ этого участка канала соответствовало моменту торможения ПП, описанному выше.…”

Section: результаты экспериментовunclassified

“…6: торможение ПП происходило в диапазоне скоростей 1−3 и 4−5 km/s. Скорость ПП по данным МЗ определяется со значительной погрешностью, однако торможение ПП при разгоне МТ прямо подтверждается результатами работы [13], а также наличием повреждений на изоляторе и динамикой СПП при " холостых" выстрелах. Применение массивного инициатора из лития или графита позволило создать на начальном участке канала плотную плазму с высокой скоростью звука, под действием давления которой МТ получало скорость ∼ 0.5 km/s.…”

Section: динамика мт и пп в каналеunclassified

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Магнитоплазменный Ускоритель Макротел С Массивным Легкоплазменным Инициатором

Козлов¹,

Котов²,

Полищук³

et al. 2019

Журнал Технической Физики

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The results of experiments with the initiator of lithium and graphite, the mass of which was ~ 10% by weight of the projectile, are presented. Such initiators create plasma with a high sound velocity value and provide the initial projectile speed of ~0.5 km/s. The drop-like damages on the insulating wall of the launcher barrel are described. There is a link between the appearance of these damages and sudden braking of the plasma piston. A hypothesis is discussed that relates the occurrence of these damages to the resonant deformation of the channel under the action of a moving high-pressure front. It is shown that the hypothesis of the resonant deformation of the barrel at a qualitative level explains the known features of the launcher operation.

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Section: экспериментальная установкаunclassified

Section: результаты экспериментовunclassified

Section: динамика мт и пп в каналеunclassified

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Магнитоплазменный Ускоритель Макротел С Массивным Легкоплазменным Инициатором

Козлов¹,

Котов²,

Полищук³

et al. 2019

Журнал Технической Физики

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“…However, it would be possible to launch rugged payloads, such as fuel, water, and others. There are two main advantage of this technology: it is possible to achieve high muzzle velocities and it is easy to force control with a pulse power system [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Analytical Performance Prediction of an Electromagnetic Launcher and Its Validation by Numerical Analyses and Experiments

et al. 2019

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An electromagnetic launcher (EML) is used to generate high launching velocities. The basic governing equation of the propulsion force of an EML is that the propulsion force is directly proportional to current and inductance gradient. L ′ is the inductance gradient that refers to the increase or decrease in the inductance with the length of rails. The inductance gradient is easily calculated because it is a function of the rail shape and frequency. However, current ( I ) flowing in an EML is calculated by the series resistor, inductor, and capacitor (RLC) equation of the equivalent circuit. Here, L is not constant and increases as the projectile muzzles. Owing to the increase in inductance, the current ( I ) and voltage ( V ) vary depending on the projectile position. Therefore, inductance, current, and voltage should be exactly obtained to calculate the exact current at a specific time. This study deals with analytical performance prediction using the relation EML propulsion force with real-time current, which is based on an increase in resistance and inductance at a specific time. To validate this approach, the results of the current waves are compared via numerical analyses and experiments. Using this prediction method, it is possible to determine and optimize the rail shape and length from the capacitor bank and vice versa.

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