[PSUBS-MAILIST] My Sub design

[Dave Everett <deverett@idx.com.au>]

I'm still keen to hear comments on my sub mockup at Moki.

The hull is 1 metre in diameter 1 inch thick with a 2 inch bulkhead at the 
opening. The ellipsoid viewport is 2 inches thick.

I originally planned to use a hemisphere but visibility was limited. The 
viewport would be fitted into a steel rim and hinge plate with protection bars.

I thought the fairing might also be able to be filled with air at the 
surface to add bouyancy and raise the hull a little higher in rough conditions.

There are no motors for vertical motion, I am wondering if some rim tanks 
are good enough to achieve good depth control or if I really do need those 
extra motors. I have a place for them in the fairing.

Under the fairing would be about 9 tanks, each around 300mm long oriented 
vertically. Most would be connected together, a couple would be used for 
trimming.

under the hull would be a large drop weight.

The concept is to have the weight of the sub below the tanks, so it sort of 
hangs in the water like a helicopter. I haven't made any studies of the COG 
yet.

Dave Everett 
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