[LMB] OT: Talking of Rocket Ship Galileo
Mark Allums
mark at allums.com
Sun Feb 10 18:47:39 GMT 2008
Joel Polowin wrote:
> Mark Allums wrote:
>> 9. rifling of barrel causes bullet to spin, like
>> a well-thrown football, stabilizing bullet in flight
>
> Is *that* of any great benefit, in a vacuum? Apart from making
> sure that the bullet hits the target pointy-end-first? And is it
> sufficient even for that, in a vacuum? (Not too sure about the
> Dynamics of an Asteroid, or even of a rapidly-spinning slug.)
In vacuum? Hmmm.... I believe yes. The bullet will kind of bounce back
and forth in the barrel without rifling, and this would mess up the
aiming. Gyroscopic stability can't *hurt* anything, and it might help.
--MArk Allums
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