Electromagnetic launch science and technology in the united states enters a new era

Fair, H.D.

doi:10.1109/elt.2004.1398037

Cited by 19 publications

(15 citation statements)

References 42 publications

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“…The size and applications have a vast span from hand-held devices to huge systems intended for launch into space. The largest system that would be integrated in an AECV is probably a hypervelocity medium-calibre coil gun [16,17].…”

Section: Electromagnetic Launchmentioning

confidence: 99%

Electromagnetic environment of future military vehicles

Larsson

Hurtig

2012

2012 Asia-Pacific Symposium on Electromagnetic Compatibility

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The technological development together with new innovative ideas make challenging future applications of pulsed power possible. These applications are now being implemented on military platform concepts such as the all-electric combat vehicle (AECV). As a result, the electric environment is drastically changed and new EMI issues emerge. In this paper, we address the electric parameters of the pulsed-power systems used for these new applications. It is found that the inclusion of ultra-wide band high-power microwave generators and electric armour into an AECV may well be the two most challenging emerging technologies as seen from an EMC perspective.

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Section: Electromagnetic Launchmentioning

confidence: 99%

Electromagnetic environment of future military vehicles

Larsson

Hurtig

2012

2012 Asia-Pacific Symposium on Electromagnetic Compatibility

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“…The pulse forming inductor L takes control of the output waveform with its pulse width and amplitude, and restricts the spreading of malfunctions. The diode D avoids charging C reversely, thus protecting the capacitor [3][4] and improving the transmission efficiency. The railgun load can be equivalent to a 1mΩ resistor R Load [9][10][11].…”

Section: The Synchronously-triggered Modelmentioning

confidence: 99%

“…Up to now, there are two main strategies to improve the system efficiency [5][6][7][8]. One is to reduce the loss of system energy during the launch; the other is to restore the residual energy remaining in the system after the launch [3]. But so far, almost all of the currently published related studies merely provide one or several experimental schemes to increase the system efficiency.…”

Section: Introductionmentioning

confidence: 97%

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Study on the system efficiency of the synchronously-triggered capacitive pulsed-power supply in the electromagnetic railgun system

Gong

Liu

2014

2014 17th International Symposium on Electromagnetic Launch Technology

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The electromagnetic railgun system based on capacitive pulsed-power supply (CPPS) has obtained widespread applications because of its obvious advantages over the inductive ones on mature technology, operational reliability and feasible financial condition. However, the existing CPPS-based electromagnetic railgun system works with low efficiency. In this paper, the systematical study on the system efficiency of the synchronously-triggered capacitive pulsed-power supply in a 1MJ electromagnetic railgun system is proposed. Firstly, all PFUs are supposed to be triggered synchronously and the load is simplified as a resistor. Then the system performance criteria, i.e. the launch velocity of the armature v end and the system efficiency η, are expressed as the function of four independent system variables, i.e. the capacitance of each pulse forming unit (PFU) C, the pre-charged voltage U C of capacitors, the rail length l, and the armature mass m. The relationship between η (or v end ) and any two independent variables can be found under the environment of Matlab®R2012a by fixing the other two parameters. The results are then verified under the environment of Simplorer®8. These figures can be used to in instruct the design of the pulsedpower supply for a designated load or the railgun for a designated source. The study can provide a theoretical foundation for the future designs to get higher system efficiency.

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“…Electromagnetic launchers have been interested because they offer the possibility of out-performing ordinary existing chemical ones in many ways [1]. Generally, the electromagnetic launchers are categorized into two kinds of systems: railguns and coilguns.…”

Section: Introductionmentioning

confidence: 99%

Validation of a coilgun design code

He¹,

Gao²,

Song³

et al. 2012

2012 16th International Symposium on Electromagnetic Launch Technology

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A coilgun design code is programmed according to the formulas described the inductive coupling between the thrust coils and the armature, the dynamic response of the armature, and the ohmic heating in the thrust coils and armature. The algorithms determined the operation statuses of the driven pulse forming network are presented. The convergence of the code is analyzed. The maximum time-step and mesh size of the armature are dependent on the rise time of the driven pulse current. The code is validated by comparing the simulated results with the experimental ones. The simulated current wave is agreement with the experimental results. However, the simulated velocity is greater than the measured one about 6.5%. The convergence and validation of the code indicate that it can be used for the primary design for a coilgun system.

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Electromagnetic launch science and technology in the united states enters a new era

Cited by 19 publications

References 42 publications

Electromagnetic environment of future military vehicles

Electromagnetic environment of future military vehicles

Study on the system efficiency of the synchronously-triggered capacitive pulsed-power supply in the electromagnetic railgun system

Validation of a coilgun design code

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