On Sun, Jun 28, 2015 at 3:35 AM, Knapp <xxxxxx@gmail.com> wrote:
>>>
>>> > This allowed you to use normal rather than tapered barrels. But in the
>>> > vacuum of space you can't fin-stabilize rounds, so you need actual
>>> > tapered
>>> > bores to get the effect.
>>>
>>>
>>> Er.  In the vacuum of space, why would you *need* to fin-stabilize
>>> rounds?
>>>
>>> I mean, it's not like there's a cross wind....
>>
>>
>>
>> You have to fin-stabilize because otherwise the perturbations of the sabot
>> dropping away (it never happens *exactly* evenly) induce oscillations in the
>> trajectory of the round.

Why would you need the sabot to drop away?  I mean, in a vacuum,
there's no atmospheric drag due to the increased cross section  of the
projectile....

:)

> Hope this is not to dumb of a question but how to fins stabilize anything is
> space?

They don't.

--

"Any sufficiently advanced parody is indistinguishable from a genuine
kook." -Alan Morgan