Re: [PSUBS-MAILIST] Need a Tail?

[Erik Muller <emuller@naic.edu>]

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