|
Hi Doug/Carsten/Frank.
Thanks for the advice. I'll respond to the
comments below, in this different font.
> Could you put a view port in
the bottom hatch and put the hatch forward to increase downward
viability?
A viewport is no problem but i thought it might
be a bit vunerable underneath. I cant shift the proposed hatch
forward, it will only just fit where i have drawn it, and that still involves
modifying the battery pods. Im not too keen on this idea because of the
extra work, and im not sure how much extra weight it will add, my endcaps are
already thicker than they need to be.
> first
calculate how many pressue-air you need to blow the boat
> inside dry to ambient on max.deep - and than go for the window solution. :-0 Yes! i know its only possible to blow the sub to
ambient at shallow depth. But i thought that even partial pressurisation
with whatever air you have would then allow the need for only partial flooding
of the hull. Basically a trapped compressed air bubble. You
could then open the front port in relative comfort and swim out. Am i
right?
> I drive
Nemo sometimes. And feel very weel with this simple,
> cheap and easy maintance dome exit solution. Yes, i like this idea as well.
> Make sure that the flood vales have a large diameter and that a pipe > goes from the flood vale to the bilge The plans do show a large diameter pipe that points
downwards, but im not sure it goes right into the bilge.
> If escape is what's required, the bottom hatch won't help, because you
are likely on the bottom anyway,
Well, the change would also involve modifying the
battery pods so there should be enough clearance for an exit. But i know
what you mean, it would be tight.
> If you open the front dome or the top hatch, you have to flood
the sub to open anything anyway. It won't open with pressure on the outside.
The idea is still to flood the sub. But,
with an increase in internal pressue. Basically increasing the size
of that compressed air bubble in the tower to a large bubble that means your
still half out of the water. As long as the pressures are equal, you
should be able to get that front port open. If the compressed air
bubble is large enough and goes onto the port itself, then of course water would
come in when you opened it, up to the top of the port only.
Its just a way of getting out without total
flooding and avoiding that explosive exit which i did not know
about.
> Redundant systems, back-ups, and practice will give you a better
chance of getting out of the situation than adding another hole to the
sub.
I have an idea to make an ambient simulator
this summer to practice escape. We have a salt water pool nearby here
and its really convenient. I just have to calculate how many concrete
blocks i need to keep it down!
> Do you plan on diving alone?
I will probably be alone in the sub, but there
will be safety divers with me, certainly at first. Plus surface
support.
> Or really deep?
No. There is a wreck i want to dive on that
is 30m. Thats probably my limit. But you never know once i finish, i
might get more adventuous.
Anyway, i think i like the domed front port idea
best. Plus Emile can make it for me so its no extra work for
me, I just pay!
Thanks
James
|