Actively Controlling the Muzzle Velocity of a Railgun

Siaenen, Thorbjörn; Schneider, M.; Zacharias, Peter; Loffler, M.J.

doi:10.1109/tps.2013.2245672

Cited by 17 publications

(8 citation statements)

References 5 publications

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“…On the other hand, the results also might indicate that the measured repeatability of the muzzle velocity of the railgun under high speed in our experiments is the systematic error. Thus, it is possible to control the muzzle velocity of the railgun at high speeds with the method presented in [2] in the future.…”

Section: Discussionmentioning

confidence: 99%

“…Second, a high repeatability of muzzle velocity of a railgun is important for precision attacking. Siaenen et al [1], [2] achieved a muzzle velocity statistical deviation of 1.63% at a mean velocity of 285 m/s without control and of 0.21% at a mean velocity of 252.8 m/s with active control on their railgun system. For a railgun with a high muzzle velocity, the relative error is in the range of 9% at a mean velocity of 800 m/s [3].…”

Section: Introductionmentioning

confidence: 99%

“…The initial parameters that influence the muzzle velocity primarily include the initial charged voltage of the capacitors [3], the mass of the armature [2], and the starting position [3]. The dynamic parameters that influence the muzzle velocity mainly include electric contact resistance and friction between the armature and the rails.…”

Section: Introductionmentioning

confidence: 99%

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An Investigation Into Muzzle Velocity Repeatability of a Railgun

Song

Guan

et al. 2015

IEEE Trans. Plasma Sci.

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Muzzle velocity repeatability of electromagnetic railgun has been identified as a potential development issue for several years. The muzzle velocity is sensitive not only to initial parameters, such as charged voltage of capacitors, mass of armature, and starting position, but also to dynamic parameters, such as electric contact resistance and friction between the armature and rails. This paper analyzes the effects of initial and dynamic parameters on muzzle velocity. It is found that the most sensitive parameter is the charged voltage of capacitors. A series of two 20-shot bursts was performed with two sets of rails, respectively. The details of the experimental setup and velocity measurement are described. The maximum deviation of the muzzle velocity is 3.8% with 8.47-g armatures at a mean velocity of 1913 m/s in the first 20-shot burst, and 0.92% with 10.50-g armatures at a mean velocity of 2373 m/s in the second 20-shot burst. It indicates that the greater armature mass and larger contact area probably advance the repeatability of the railgun muzzle velocity. The effects of rail current and muzzle voltage on repeatability are discussed. The relations between repeatability of the muzzle velocity and the rail current and/or muzzle voltage are not obvious.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Investigation Into Muzzle Velocity Repeatability of a Railgun

Song

Guan

et al. 2015

IEEE Trans. Plasma Sci.

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“…This section describes the mathematical model of a launcher system, which was the subject in [9]. Table I shows the key parameters of the accelerator and its energy supply.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…6 shows the calculation of one mesh current. The two blocks calculate (9). The integrator calculates the current in one mesh.…”

Section: Implementation In Scilabmentioning

confidence: 99%

Block Diagram Model for the Simulation of an Electromagnetic Rail Accelerator System

Siaenen

Schneider

Hogan

2015

IEEE Trans. Plasma Sci.

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Rail accelerators are superior to classical gas-driven accelerators with regard to attainable terminal velocity, ignition delay variation, and controllability. The behavior is generally described with a system of nonlinear differential equations, which can be solved in many ways. This is done in order to describe an existing launcher, to predict its performance when parameters change, or to estimate the properties of such a system in the design phase. This paper presents a simplified electromechanical system of differential equations in a novel form. This form enables scientists to solve the equations using one of the following software: Scilab, MATLAB, or a similar one. The model is robust and parameter changes have a low impact on the solving time. This makes it a reliable tool for parametric studies. The model comprises pulsed power capacitors, the pulseforming network, cables, and the launcher itself. At first, the electrical part is described with its circuit equivalent and coupled with the mechanical process. Second, the system is analytically transposed to a standard form. This form is then transferred into the simulation software, which solves the equations. It can simply be adapted to other launchers and modified to comprise nonlinear side effects. The simulation results are compared with experimental results from the augmented rail accelerator at the French-German Research Institute of Saint-Louis, France.

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Magnetische Eigenschaften von Werkstoffen

Zacharias

2020

Magnetische Bauelemente

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Actively Controlling the Muzzle Velocity of a Railgun

Cited by 17 publications

References 5 publications

An Investigation Into Muzzle Velocity Repeatability of a Railgun

An Investigation Into Muzzle Velocity Repeatability of a Railgun

Block Diagram Model for the Simulation of an Electromagnetic Rail Accelerator System

Magnetische Eigenschaften von Werkstoffen

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