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Re: [PSUBS-MAILIST] Need a Tail?



Hi
 
So it's to prevent it from rolling, right.  But what's going to cause it to roll? 
 
--Doug J
 
In a message dated 3/19/2004 2:54:05 PM Central Standard Time, emuller@naic.edu writes:
Hi Doug.
The reason for the tail is to provide a useful torque for pitching.
The V shape is to maximise rolling stability while reducing the
resistance to pitch.
The more torque, the more powerful the pitch and the less energy necessary.
This is all hand-wavey stuff of course.
EM.


DJACKSON99@aol.com wrote:


> Regarding Erik's
> design http://www.prismnet.com/~moki/20040303.075202/sub1.jpeg
> <http://www.prismnet.com/%7Emoki/20040303.075202/sub1.jpeg>  Would
> this really need a tail?  Considering that this one does not:
> http://www.odyssea-sub.com/   What is the criteria for deciding if you
> need a tail?  :)


> Regards,
> Doug J