Design and testing of a 25-stage electromagnetic coil gun

Cravey, W.R.; Devlin, G.L.; Loree, Ellis L.; Strohl, S.T.; Young, Chris M.

doi:10.1109/ppc.1995.599800

Cited by 7 publications

(1 citation statement)

References 1 publication

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“…A multi-stage solenoid coil design is required to improve the final velocity of the projectile. [1][2][3][4] The projectile moves through the passage and accelerates when current is applied to the next solenoid coil. The final velocity of the projectile is significantly affected by the discharge time of the capacitor connected to the solenoid coil according to the projectile's position.…”

Section: Introductionmentioning

confidence: 99%

Control of discharge time using physical contact in a two-stage coil gun

Kim

2019

Advances in Mechanical Engineering

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In this study, a coil gun was designed using a trigger that can discharge a capacitor using physical contact. Controlling the discharge time of the capacitor in a multi-stage coil gun is an important factor for the final velocity of the projectile. To control the discharge time, we used the physical contact of the projectile and the trigger and controlled the point in time when discharge occurs by sensing the projectile location using a sensor. Controlling the discharge using sensors allows for more accurate timing control than physical discharge systems, but the circuit is more complex, and the high current results in a higher risk of malfunction and higher costs. In contrast, systems that use physical contact are simple, have low risk of malfunction, and have low cost. The velocity of the projectile was predicted using the electromagnetic analysis simulation program MAXWELL, and the final velocity of the projectile was compared to the results of a prototype.

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Section: Introductionmentioning

confidence: 99%

Control of discharge time using physical contact in a two-stage coil gun

Kim

2019

Advances in Mechanical Engineering

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Optimized electromagnetic launch system for increasing payload of U.S. expendable launch vehicles

Cravey¹,

Young²,

Bosma³

1996

AIP Conference Proceedings

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Study of traveling wave tubular linear induction motors

Haghmaram

Shoulaie²

2004 International Conference on Power System Technology, 2004. PowerCon 2004.

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In this paper, we review some major research results in Traveling Wave Tubular Linear Induction Motors technology, based on 'open literature"publications, which were obtained in the world in the last decades. One database analysis shows that coil launchers are covered in 68 of over 1000 electromagnetic launcher papers published, referred to 53 of them in this paper. The research program includes studies of history, types, applications, theories and analysis, design, and power conditioning of coil launchers with emphasising on traveling wave induction (Linear Induction Launcher) one. In the theories and analysis section, a preview i s given of current sheet model, current filament model, finite element method, and wavelet transform. In the design section, local and global optimisation algorithms and designing results is reviewed. In the fmal section, we review power conditioning of Capacitor Driven Coilguns and Generator Driven Coilguns, and concepts of "Magnetic Flux Compression" for generating pulses required to efficiently drive the coil launchers and LLDouMc+Fed Induction Launchers".

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Design and testing of a 25-stage electromagnetic coil gun

Cited by 7 publications

References 1 publication

Control of discharge time using physical contact in a two-stage coil gun

Control of discharge time using physical contact in a two-stage coil gun

Optimized electromagnetic launch system for increasing payload of U.S. expendable launch vehicles

Study of traveling wave tubular linear induction motors

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