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首页> 外文期刊>IEEE Transactions on Magnetics >An empirical model for plasma armature voltage (in EM launchers)
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An empirical model for plasma armature voltage (in EM launchers)

机译:等离子体电枢电压的经验模型(在EM启动器中)

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摘要

Scaling of armature voltage with bore diameter is an important issue, since it affects the predicted efficiency and the predicted velocity performance of proposed large-bore electromagnetic launchers. The experimental data for railguns with plastic/composite insulation is shown to fit a scaling relation of the form V/sub m/=V/sub e/+E(j)d, where V/sub m/ is the muzzle voltage, V/sub e/ is the total electrode drop, and the electric field dependence on current density is given by E(j)=E/sub 0/+j/ sigma . This scaling relation predicts a linear increase in armature voltage with bore diameter for d<0.1 m. The model is in better agreement with the limited data on large-bore railguns than earlier models.
机译:电枢电压与孔径的比例缩放是一个重要的问题,因为它会影响建议的大口径电磁发射器的效率和速度性能。示出了具有塑料/复合绝缘的轨道枪的实验数据符合以下形式的比例关系:V / sub m / = V / sub e / + E(j)d,其中V / sub m /是枪口电压V / sub e /是总的电极压降,电场对电流密度的依赖性由E(j)= E / sub 0 / + j / sigma给出。这种比例关系可预测电枢电压随着d <0.1 m的孔径而线性增加。与早期模型相比,该模型与大口径轨道炮的有限数据更加吻合。

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