Multi-turn railguns: concept analysis and experimental results

Poltanov, A. E.; Kondratenko, A. K.; Glinov, A. P.; Ryndin, V. N.

doi:10.1109/20.911876

Cited by 44 publications

(11 citation statements)

References 8 publications

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“…Because of the presumably large diameter and weight of the space assembly, future systems can be multirail [19] and multiturn [20], [21] designs with a metal armature. In contrast to traditional electromagnetic accelerators with one pair of electrode rails, the multiturn designs have pairs of electrodes [20], which increases the inductance per unit length of the accelerator by a factor of with the same bore dimensions.…”

Section: A Rocket Performance and The Performance Objectives Of The mentioning

confidence: 99%

“…In contrast to traditional electromagnetic accelerators with one pair of electrode rails, the multiturn designs have pairs of electrodes [20], which increases the inductance per unit length of the accelerator by a factor of with the same bore dimensions. This makes it possible to reduce the working current of the accelerator by a factor of and to operate in the current and voltage ranges commonly used in electrophysical engineering (for example, for the acceleration of the space assembly, the working current of a traditional accelerator should be in the range of 8-10 MA and that of a multirail accelerator only 1 to 2 MA).…”

Section: A Rocket Performance and The Performance Objectives Of The mentioning

confidence: 99%

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Overview of Some Recent EML Research in Russia

Shvetsov

Rutberg²,

Budin³

2007

IEEE Trans. Magn.

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The overview summarizes the main electromagnetic activities in Russia since the 12th Electromagnetic Launch Technology Symposium in 2004. This research has been focused on the development and improvement of electro-discharge launchers, railguns, and electrothermal-chemical (ETC) launchers. Research efforts have been directed toward studying the physical phenomena and processes limiting the attainment of high velocities and operational resources of launchers. Considerable attention has been paid to solving problems related to material erosion, the manufacture of new materials and their testing in high-current arc discharges, and the search for new applications of launchers in science and engineering.Index Terms-Electrodischarge launcher, electromagnetic launcher, electrothermal-chemical launcher.

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Section: A Rocket Performance and The Performance Objectives Of The mentioning

confidence: 99%

Section: A Rocket Performance and The Performance Objectives Of The mentioning

confidence: 99%

Overview of Some Recent EML Research in Russia

Shvetsov

Rutberg²,

Budin³

2007

IEEE Trans. Magn.

View full text Add to dashboard Cite

show abstract

“…With using completely separate armatures, effects of induction leads to a better force distribution in the model and it will make possible multiprojectiles [5]. The current density distribution in two-turn railgun is more uniform on account of a better magnetic field diffusion into rail and armature surfaces augmented due to insulating gaps available [6]. In this study it is motivated to investigate through the effects of stacked rails as a multi-turn railgun.…”

Section: Introductionmentioning

confidence: 97%

Simulation of launching several projectile by a multi-turn railgun by 3D-FEM

Keshtkar

Gharib

Bayati

2012

2012 16th International Symposium on Electromagnetic Launch Technology

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The use of a multi-turn railgun is a method for decreasing the current without reducing the electromagnetic force on the projectile. The objective of this investigation is the study of a novel multi-turn railgun that can launch several separated launching synchronously or unsynchronously. this method more over than distributing the force on the projectiles, prepare the projectiles launching with time spacing. The railgun has two barrels stacked in series and is powered by one pulse power supply. In this study by using a finite-element method we will simulate a three-dimensional railgun. The projectiles are in different position and in this research it is investigated by obtaining The self inductance gradient and mutual inductance gradient for each position of armatures that way it can regulated time of launch with changing the configuration of launcher . Moreover, Here it is obtained how launching time , which is directly proportional to the propulsive force, depends and is limited by rails and armatures geometry, armatures initial positions and armatures mass and material.

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“…There is a multitude of possibilities to produce this augmenting field. Experiments at ISL [1]- [3] and elsewhere [4]- [8] have shown the utility of this concept. Here we use the SR\3-60 railgun to demonstrate a serial augmentation, which improves the acceleration efficiency by a factor of two.…”

Section: Introductionmentioning

confidence: 98%

Using the SR\3–60 Railgun in Augmented Mode

Vincent

Hundertmark

2015

IEEE Trans. Plasma Sci.

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Augmentation is a well-known method to increase the velocity of railgun projectiles, while at the same time keeping the driving currents down. At the French-German Research Institute of Saint-Louis (ISL), several experiments using augmented railguns were performed. Here we report on a study using the SR\3-60 as a augmented railgun. The SR\3-60 is a 2-m-long railgun composed of three identical pairs of rails that are rotated by an angle of 60°with respect to each other. This railgun offers flexibility in use. In earlier experiments, it was used to accelerate a single projectile using a serial or overlapping configuration of the rail pairs, to enable a fire rate of 400 Hz, or to accelerate a strongly segmented projectile. In this paper, a brush armature projectile with a 20-g payload is accelerated using one pair, while the other two pairs are connected in series to augment the magnetic field inside the railgun. A series of shots with and without augmentation is performed and discussed.Index Terms-Electromagnetic launching, railgun.

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Multi-turn railguns: concept analysis and experimental results

Cited by 44 publications

References 8 publications

Overview of Some Recent EML Research in Russia

Overview of Some Recent EML Research in Russia

Simulation of launching several projectile by a multi-turn railgun by 3D-FEM

Using the SR\3–60 Railgun in Augmented Mode

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