that is incorrect. The projectiles from a railgun can't fly out


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送交者: steven 于 2008-02-02, 23:39:23:

回答: seems the EM RAILGUN can also get the Long range job done 由 百年树人 于 2008-02-02, 19:35:00:

of the atmosphere. Mach 7 is too slow for that. Even with Mach 15 can't get the projectile out of the atmosphere. You need at least mach 24 to be on the orbit. Mach 7 is call the muzzle velocity, meaning that the velocity of the projectile leaving the gun muzzle. The projectile gets slowdown by the atmosphere, and when it reaches the target, it should be at mach 5.



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