The electromagnetic θ gun and tubular projectiles

Burgess, Tom; Cnare, E.C.; Oberkampf, William L.; Beard, S.G.; Cowan, M.

doi:10.1109/tmag.1982.1061811

Cited by 20 publications

(7 citation statements)

References 2 publications

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“…The electric current flowing through the coil must be timed in such manner that there must not be a magnetic field around the coil during the exit of the projectile which would slow it down. The magnitude of the magnetic induction created by the coil is proportional to the intensity of the electric current flowing through the coil (1), which ultimately determines the accelerating force affecting the projectile. In order to calculate the magnetic induction "B" generated by the coil (solenoid) the following relation can be applied based on the 4th laws of Maxwell and Biot-Savart law (1).…”

Section: The Theoretical Structure Of the Devicementioning

confidence: 99%

“…Accordingly, the basic way to increase the magnetic induction is to increase the current through the coil. (1) The formula is correct for solenoid only, but it is enough to the analyze the effects of individual members. In order for an even higher current to flow through the coil, firstly, it must be powered by a power source which has very low internal resistance.…”

Section: The Theoretical Structure Of the Devicementioning

confidence: 99%

“…In English terminology, many descriptions can be read about these devices, referred to as "coilgun". There are so many hobbyist and amateurs who make these devices [1,2] and publish their results on the internet [3,4].The purpose of the project is dual. On one hand, features, advantages, disadvantages and the limits of the electromagnetically accelerated weapons can be found by building an experimental tool.…”

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confidence: 99%

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The Demonstration Model of an Electromagnetic Accelerator Gun

Molnár

2018

Acta Universitatis Sapientiae Electrical and Mechanical Engineering

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These days a lot can be heard about special weapons which accelerate the projectile not based on the traditional, chemical energy release, but providing the muzzle velocity with the help of electromagnets. In English terminology, many descriptions can be read about these devices, referred to as "coilgun". There are so many hobbyist and amateurs who make these devices [1,2] and publish their results on the internet [3,4].The purpose of the project is dual. On one hand, features, advantages, disadvantages and the limits of the electromagnetically accelerated weapons can be found by building an experimental tool. On the other hand, it was intended to point out the fact that anybody can build such a tool using commercially available commercial components.Although the muzzle energy of the device presented in this paper is not more than 6.8J, but it can cause serious injury. The paper also points out that in a similar way, still not using special components, a weapon can be made with a larger (10-20J) muzzle energy.

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Section: The Theoretical Structure Of the Devicementioning

confidence: 99%

Section: The Theoretical Structure Of the Devicementioning

confidence: 99%

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confidence: 99%

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The Demonstration Model of an Electromagnetic Accelerator Gun

Molnár

2018

Acta Universitatis Sapientiae Electrical and Mechanical Engineering

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“…It can not only overcome the disadvantages of severe erosion in rail electromagnetic launch and complex synchronization in coaxial coil electromagnetic launch, but also potentially combine the advantages of achieving hypervelocity in rail electromagnetic launch and launching large mass in coaxial coil electromagnetic launch [1]. Therefore reconnection electromagnetic launch is regarded as a form of electromagnetic launch with good perspective and wide application in scientific research, military domains, avigation, spaceflight and so on [2,3].…”

Section: Introductionmentioning

confidence: 99%

Simulation and measurement on velocity of flat-plate projectiles in a three-stage reconnection electromagnetic launcher

Duan

Liao

Zou

et al. 2011

2011 IEEE Pulsed Power Conference

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For study the velocity characteristics of acceleration of the projectiles, a sketch of a three-stage reconnection electromagnetic launcher using flat-plate projectiles was introduced in this paper, A theoretical model of small scale 3-stage reconnection launcher was set up and the velocity of the projectile as well as the efficiency properties was simulated. A three-stage reconnection launcher was founded and the measurement system was designed to obtain the velocity of the projectile. A control system on the basis of a microcontroller and a computer was designed for the launcher, Groups of IT -shaped photocouplers were aligned at the preset spacing in the direction of the flyway in order to sense the arrival of the projectile and output signals to the control system for velocity measurement. Measures are taken to inhibit electromagnetic interference and to isolate high voltage. Three types of flat-plate projectiles with different configuration were prepared for experiments. The simulated results and experimental data show that when the 4.32mF capacitor banks were charged to 5000 V, a final velocity of 59 m/s for the 100g-hollow-plate projectile was acquired. For the 160g-solid-plate projectile and the 80g-gridded-plate projectile cases, the final velocity was 46 m/s and 43 m/s respectively. D

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