Ljot skjold-tygja

A coward may live
Though he keeps himself from strife
But old age gives no peace
When spears may spare his life


While firing a copper projectile on copper-tungsten rails with an indium interface, a
chronograph reading of 2.9 km/s was obtained. We calculated the maximum feasible speed
of the projectile given its mass and the energy in the system and determined that the projectile
could not have traveled that fast. Upon reviewing videotape of the shot, we observed an
indium/copper plasma spray traveling ahead of the projectile at a much greater speed. This
spray triggered the chronograph, which was then unable to detect the velocity of the
projectile itself.
-Investigation of Tungsten, Copper, and Silver Alloys with Indium at the
Rail-Armature Interface on a Railgun Test Bench ADP012477


1 km = 1093.6 yards
1 au = 1.58125 x 10^-5 ly
1 kg = 2.2046 lbs
1 m^3 = 33814 floz

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