Analysis of Rail Gun Bore Residue

Jamison, K. A.; Burden, H. S.; Marquez-Reines, M.; Niiler, A.

doi:10.21236/ada140303

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1984

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Cited by 2 publications

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“…Finally, experimental work needs to be done to characterize the arc and to provide estimates for the extent and type of damage to the rails, Some initial work in this area has been reported [16,17] and those efforts hopefully will be continued, The work of Iomison et al at BRL is particularly noteworthy.…”

Section: Summary and Discussionmentioning

confidence: 99%

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Arc-Dynamic Calculations In The Rail Gun

Batteh¹

1983

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Section: Summary and Discussionmentioning

confidence: 99%

“…Figure 3 shows plots of the pressure ratio, as determined from Bq. (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), which correspond to the inductance plots of Fig. 2.…”

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confidence: 89%

Arc-Dynamic Calculations In The Rail Gun

Batteh¹

1983

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“…The parameters z and z , used to determine the characteristic time and the time of maximum velocity, as a function of z n . [See Eq (6)…”

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confidence: 99%

Effects of Atmospheric Air on Projectile Acceleration in the Rail Gun

Powell¹

1984

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Approved for public release; distribution unlimited. 17. DISTRIBUTION STATEMENT (ol the abetract entered In Block 20, II dlllerent Irom Report) 18. SUPPLEMENTARY NOTES 19. KEY WORDS (Continue on reverse aide il necessary and identily by block number) Rail gun Hypervelocity acceleration Electromagnetic propulsion Atmospheric drag Electric gun 20. ABSTRACT ("Corrtfinje am rmvermm aide II nacossary and identity by block number) ^idkj The manner in which projectile velocity in a rail gun is limited by the presence of atmospheric air in the gun tube is studied. In particular, we solve the equation of motion for the acceleration of the armature and projectile, accounting for both the decelerating force exerted by the atmosphere and the time decay of the current profile. From the solution, a characteristic time is derived which indicates quantitatively when the effect of the atmosphere can be expected to be significant. Results of the calculation (continueji) DD t JA^'TS 1473 EDITION OF t MOV 6S IS OBSOLETE UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (When Data Entered) UNCLASSTFrRD SECURITY CLASSIFICATION OF THIS PACEfWJian Datm Entered) are then compared qualitatively with results from two recent Qxperiments, one in which atmospheric effects are nearly negligible and one in which they are not.

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Analysis of Rail Gun Bore Residue

Cited by 2 publications

References 0 publications

Arc-Dynamic Calculations In The Rail Gun

Arc-Dynamic Calculations In The Rail Gun

Effects of Atmospheric Air on Projectile Acceleration in the Rail Gun

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