Re: [PSUBS-MAILIST] diver lockout details

[MerlinSub@t-online.de (Carsten Standfuß)]

Hi Lucas, 

Yes - I change the position of the chamber to the bow. 
The reason was that the finite element analysis of a friend
shows some big problems with the stress in the welding of 
the chamber (and also the outside hull) locate only on 
portside-midships. 

The new version generate not so much stress and is more 
symmetrical - better for the hull and the chamber. 

This change was possible after the decision not to have bow
windows - and give as better over all performance. 
Control the diver chamber is easier from the "Zentrale"
because is just a frame away. 

The other question : Maybe.. 

The volume of the bow ballast tank is 4,5 m3
The volume of the chamber is about 7,5 m3
Stern tank has also 4,5 m3

Stern and bow 9 m3, Regulator 50% 0,7 m3
all together 9,7 m3 positive against 7,5 m3 negative. 
Boat survive with bow down and stern up.

If I drop the forward two of the three drop weights 
of about 1 t each and pump the 50% diesel of the forward
diesel trim-tank to the stern diesel trim-tank - 
the boat should be still operable on the surface. 
May I should calculate trim angle, 
waterline and stability for this event someday.. 

Half hour for today is gone - see you - Carsten


Lucas Gray schrieb:
> 
> Hi:
> I noticed you changed the location of your diver lock out from the
> side of the midsection to the bow of your sub. is this to make
> construction simpler? Also, can the CSSX survive a complete flooding of
> the lockout chamber? (top hatch open)
> 
> sure looks like a great sub,
> lucas