[ExI] Physical limits of electromagnetic launchers

[Kelly Anderson]

On Sun, Jun 3, 2012 at 4:22 AM, BillK <pharos at gmail.com> wrote:
> On Sun, Jun 3, 2012 at 9:01 AM, Kelly Anderson wrote:
>> Sorry, I wasn't suggesting the same mechanism, merely the same geometry.
>>
>> Regardless of where the breaking point is reached, it seems that
>> starting with a circle and breaking out to a straight line after a
>> certain speed is reached seems like a logical way to shorten the
>> required length of the gun. It's just a question of how much shorter
>> it would make it, I suppose.
>>
>>
>
> Fc = mv2/r, where Fc = centrifugal force, m = mass, v = speed, and r = radius.
>
> An object traveling in a circle behaves as if it is experiencing an
> outward force.
>
> You can plug numbers into this calculator -
> <http://eculator.com/formula/calculator.do?equation=Centripetal-force&id=51>
>
> Force of 1g = 9.81 m/s^2 = 32.2 ft/s^2
>
> How much g force can your projectile stand?
> How big can your circle be?
> How much velocity can you reach?

Sorry for being stupid, it seems that you don't get very much speed
before the G-Forces would squish ya.

-Kelly