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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
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