Numerical studies of ablation and ionization of railgun materials

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The intense radiation from the arc in a railgun may cause vaporization and partial ionization of rail and insulator material. The mass of material added to the arc can have a significant adverse effect on projectile velocity. A numerical model has been developed to predict the change in mass of the arc as a function of several parameters. That model has been incorporated in the Los Alamos Railgun Estimator (LARGE) code and simulations have been run to assess the accuracy of the model. Analytical predictions were found to be in good agreement with experimental data for railgun tests run at ... continued below

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Pages: 8

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Schnurr, N.M. & Kerrisk, J.F. January 1, 1985.

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Description

The intense radiation from the arc in a railgun may cause vaporization and partial ionization of rail and insulator material. The mass of material added to the arc can have a significant adverse effect on projectile velocity. A numerical model has been developed to predict the change in mass of the arc as a function of several parameters. That model has been incorporated in the Los Alamos Railgun Estimator (LARGE) code and simulations have been run to assess the accuracy of the model. Analytical predictions were found to be in good agreement with experimental data for railgun tests run at Los Alamos. Ablation appears to have a significant effect on railgun performance.

Physical Description

Pages: 8

Notes

NTIS, PC A02/MF A01; 1.

Source

  • 18. AIAA fluid dynamics, plasmadynamics and laser conference, Chicago, IL, USA, 1 Nov 1985

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  • Other: DE85010741
  • Report No.: LA-UR-85-1420
  • Report No.: CONF-851138-1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5715401
  • Archival Resource Key: ark:/67531/metadc1087207

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1985

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • May 30, 2018, 6:57 p.m.

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Schnurr, N.M. & Kerrisk, J.F. Numerical studies of ablation and ionization of railgun materials, article, January 1, 1985; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1087207/: accessed September 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.