[PSUBS-MAILIST] Gliding sub was Variable Ballast Calculations

[Carsten Standfuss <Merlinsub@t-online.de>]

ahhhhh understand - a gliding sub.. 

http://www.prismnet.com/~moki/20050322.141703/Onemanglider001.desc
http://www.prismnet.com/~moki/20050322.141703/120tGlidingsub.jpg
http://www.prismnet.com/~moki/20050322.141703/DivingMTB001.jpg
http://www.prismnet.com/~moki/20050322.141703/MantaRekonstruktion01.JPG
http://www.prismnet.com/~moki/20050322.141703/Onemanglider001.jpg

Did some own research : 

http://www.prismnet.com/~moki/20030616.162421/FastSubglider1.desc
http://www.prismnet.com/~moki/20030616.162421/FastSubglider1.jpg

For this kind of sub the softtanks must be much greater to create a good
surface to weight ratio for a gliding surface. 

But Note : All this machines will be extreme fuel eaters.. 
 
regards Carsten

Joseph Perkel schrieb:
> 
> Carsten,
> 
> Yes you did understand me correctly, the soft water ballast ratio is
> indeed high in this example. However, the response indicates to me
> that I understand the principles much better than when I started out.
> The target range you mention of 20 to 30% of dry weight for a sea boat
> is extremely helpful, thank you. I am still learning, with help from
> those such as yourself, what is and what is not possible.
> 
> I am trying to work the numbers for a dry ambient boat that would be
> large but still be trailer able. It will take me months but if I
> will post schematics when I have what I believe to be a practical
> solution. See the link below to follow my train of thought.
> 
> Thank you
> 
> Joe Perkel
> Miami, Florida
> 
> 
> Rick,
> 
> Same as above, the numbers represent a new upslope in the learning
> curve for me. They are indeed lopsided as you and Carsten point out,
> but they are in the theoretical ballpark if not a practical one.
> Exomos (see the link) has a submersible "surface" yacht (Proteus) that
> has a displacement of 45 tons. They do not specify if this is
> submerged or not but the thing does 25 knots on the surface.
> 
> I don't want to go 25 knots, but I suspect that the dry weight to
> ballast numbers look something "like" my example in order for it to
> plane at that speed.
> 
> To answer your question about size, whatever is possible for a crew of
> three in relative comfort?
> 
> http://exomos.com/exomos_main_content.html
> 
> Thank you as well.
> 
> 
> Myles,
> 
> Dry weight and displacement are not the same thing. I appreciate the
> effort however.
> 
> Thanks
> 
> 
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