Design considerations for an electromagnetic railgun firing intelligent bursts to be used against anti-ship missiles

Gallant, Johan; Vancaeyzeele, Tom; Lauwens, Ben; Wild, Barbara; Alouahabi, Farid; Schneider, M.

doi:10.1109/eml.2014.6920655

Cited by 7 publications

(10 citation statements)

References 7 publications

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“…The SR3/60 can also be operated in multishot mode, as it has 3 independent pairs of rails [10]. As has been argued in the past with respect to operational scenarios, electromagnetic multishot railguns are able to fire intelligent salvos [11]. An electromagnetic system allows for varying both the muzzle velocity of the projectile and the fire rate during a burst.…”

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 97%

“…This can be done conveniently using a SPICE code, see for instance [11]. The PSPICE model used for simulating the SR3/60 resembles that presented in [11] and therefore allows for calculating the dynamics of the projectile. Note that the model used here does not include physical effects, such as the velocity skin effect or friction, which would in many cases have to be taken into account for matching experimental results.…”

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 99%

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The use of a railgun facility for dynamic fracture of brittle materials

Schneider

Vincent

Hogan

et al. 2014

2014 17th International Symposium on Electromagnetic Launch Technology

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Linear electromagnetic acceleration has a wide range of applications. Among them are applications in the field of materials science where relatively small, inexpensive systems can be of high value. For instance, it was shown recently at the French-German Institute of Saint Louis (ISL), France, that the symmetric Taylor test -a method to investigate the deformation behaviour of specimens at high deformation rates-can be realized with higher precision than attainable with other acceleration methods by using a railgun with velocity control. In this work, we present another example for an application of a railgun in the field of materials science, namely the study of impact phenomena and terminal ballistics. One of the major advantages of railgun technology is that the acceleration profile can be well defined at velocity ranges from very low speeds (< 10 m/s) up to more than 2000 m/s -for one and the same launcher. Moreover, the geometry of a railgun projectile can be round, rectangular or, as in the case discussed here, hexagonal. Finally, electromagnetic acceleration does not require the use of propellants, which in the case of impact experiments could lead to complications -at least for the experimental application presented. The quest is to study the ejecta field of fractured brittle materials at moderate impact velocities (< 500 m/s). It transpires that a railgun can be a valuable tool for such investigations. Using high-speed cameras and novel data processing methods ejecta distribution-velocity relations are explored. Our contribution describes the experimental setup used and will introduce some of the major results obtained so far.

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Section: Potential Future Impact Physics Experimentsmentioning

confidence: 97%

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 99%

The use of a railgun facility for dynamic fracture of brittle materials

Schneider

Vincent

Hogan

et al. 2014

2014 17th International Symposium on Electromagnetic Launch Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…The SR3/60 can also be operated in multishot mode, as it has three independent pairs of rails [10]. As has been argued in the past with respect to operational scenarios, electromagnetic multishot railguns are able to fire intelligent salvos [11]. An electromagnetic system allows for varying both the muzzle velocity of the projectile and the fire rate during a burst.…”

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 97%

“…For our purpose, it is sufficient to solve the Kirchhoff equations describing the electric circuit, and to couple them with the dynamics of the projectile using Newton's second law. This can be done conveniently using a SPICE code, see for instance [11]. The PSPICE model used for simulating the SR3/60 resembles that presented in [11], and therefore allows for calculating the dynamics of the projectile.…”

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 99%

“…This can be done conveniently using a SPICE code, see for instance [11]. The PSPICE model used for simulating the SR3/60 resembles that presented in [11], and therefore allows for calculating the dynamics of the projectile. Note that the model used here does not include physical effects, such as the velocity skin effect or friction, which would in many cases have to be considered for matching experimental results.…”

Section: Potential Future Impact Physics Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

The Use of a Railgun Facility for Dynamic Fracture of Brittle Materials

Schneider

Vincent

Hogan

et al. 2015

IEEE Trans. Plasma Sci.

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Linear electromagnetic acceleration has a wide range of applications. Among them are applications in the field of materials science, where relatively small, inexpensive systems can be of high value. For instance, it was shown recently at the French-German Institute of Saint Louis, France, that the symmetric Taylor test-a method to investigate the deformation behavior of specimens at high deformation rates-can be realized with higher precision than attainable with other acceleration methods using a railgun with velocity control. In this paper, we present another example for an application of a railgun in the field of materials science, namely, the study of impact phenomena and terminal ballistics. One of the major advantages of railgun technology is that the acceleration profile can be well defined at velocity ranges from very low speeds (<10 m/s) up to more than 2000 m/s-for one and the same launcher. Moreover, the geometry of a railgun projectile can be round, rectangular or, as in the case discussed here, hexagonal. Finally, electromagnetic acceleration does not require the use of propellants, which in the case of impact experiments could lead to complications-at least for the experimental application presented. The quest is to study the ejecta field of fractured brittle materials at moderate impact velocities (<500 m/s). It transpires that a railgun can be a valuable tool for such investigations. Using high-speed cameras and novel data processing methods ejecta distributionvelocity relations are explored. Our contribution describes the experimental setup used and will introduce some of the major results obtained so far.

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Two module electromagnetic launcher with pneumatic assist

Kluszczyński

Domin

2015

COMPEL

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Purpose -The purpose of this paper is to present a new concept of a multi-module electromagnetic launcher with pneumatic assist. The authors focus on the problem of modelling a two-module electromagnetic launcher consisting of a coil-gun (module C) and a rail-gun (module R), as well as on the key problem of determining their position-dependent parameters, i.e. the resistances and inductances of discharging electrical circuits connected with the both modules. Special attention is paid to the possibility of influencing the missile's flight via basic controller variation of the initial voltage values across the terminals of the capacitor batteries supplying current to both modules C and R. Design/methodology/approach -Analysis of the electromagnetic launcher has been based on the circuit-field approach. Differential equations describing movement of the missile have been drawn from circuit theory. The Finite Element Method and the Comsol Multiphysic program were used to determine position-dependent parameters in module C. It is worth emphasising that the effect of saturation (resulting from B-H curve for ferromagnetic part of the considered magnetic circuit) was taken into account. The influence of the initial missile speed adjusted in a pneumatic assist unit on the missile's velocity was also considered and illustrated by appropriate simulations (the Matlab program). Findings -In analysing the flight of a missile along coil-gun and rail-gun modules, it is necessary to distinguish between three specific stages of the moveable element: the "fall in" stage, the "drive through" stage and the "fall out" stage. One of the most important findings is that during modelling, it is necessary to take into account of all the three above-mentioned stages of missile movement and, in particular, the "fall in" stage. It was shown both by computer simulations and laboratory investigations that this stage plays an important role in determining the time curves of decaying currents in discharging electrical circuits of both module C and module R.Research limitations/implications -The main difficulties are related to determining the influence of air drag force upon missile movement (especially in module C), as well as identifying an accurate value for contact resistances and friction force between the rails and the missile in module R. Practical implications -Hybrid construction employing propelling units of different characters should be treated as a promising and challenging trend in developing launcher structure. One of the most significant advantages of such a solution is the possibility of influencing missile velocity during its flight. Social implications -Since the first device was successfully completed in 1920 the continuous rise in the interest on electromagnetic launchers has been observed. As far as their social and technical impact is concerned, one of the most promising fields of interest seem to be launchers of satellites, high-pressure compressors, simulators modelling collisions between meteoroids and the surface of the ...

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Design considerations for an electromagnetic railgun firing intelligent bursts to be used against anti-ship missiles

Cited by 7 publications

References 7 publications

The use of a railgun facility for dynamic fracture of brittle materials

The use of a railgun facility for dynamic fracture of brittle materials

The Use of a Railgun Facility for Dynamic Fracture of Brittle Materials

Two module electromagnetic launcher with pneumatic assist

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