From: "rick miller" <rickm@pegasuscontrols.com>
Reply-To:
personal_submersibles@psubs.org
To:
<personal_submersibles@psubs.org>
Subject:
[PSUBS-MAILIST] ambient ballast control
Date: Mon, 27 Feb 2006
08:31:03 -0800
hi joe.
i have given your design
some thought which means this post will probably be really!!
stupid.
design constrants
ambient design = the stuff
will get wet/ electric is bad or expensive
minimixe free surface area
in ballast tanks = no water sloshing around in the
tanks on the surface.
cheap = not everyone hit the
lotto last night
dependable = we don't want
to die, just are friends think so.
flood valves use a flapper design with a rod
throught the flapper held with a spring to act as a overpressure relief
valve. mount the hinge on the rear so water flow will hold open incase of
failure. control system manual psuh pull rod and bell cranks to single
lever, the relief springs will help with the rigging here to rods will not
have to be exact. just like the overe presuazation valve one a boeing but
the spring will be on the outside not the inside with the controll rod going
through the flapper.
vent valves and blow valves
run your vents to the sail
you can use pvc pipe due to low pressure and mount ball valves
there.
rick m a+p/ia