so are you saying use the ambiant tank for trim. I was thinking four trim tanks and four four surface tanks that way I can trim at four points before the dive to obtain neutral bouyancy and ballance the boat out. as for the piping I was trying to do away with alot of external piping. not for any real resone other than I don't want a bunch of external lines and pipes. I'm not sure what you mean about deviding the two systems? the trim tanks will have a drain valve that can be closed and the main surface tanks will vent out the bottom. air will be inroduced to the tanks from the top of each. once the trim tanks are set for the load the drain valve is closed and to surface all that is needed is to fill or flood the main tanks to surface and dive. I was attemting to streamline the boat also making it opperate more like an attack sub with dive planes and a joystick control for the rear rudders so as to operate like a sport sub or aircraft controls. here is a concept of line placement. and your oppinion on rectangular view ports would be? also is a concept drawing for an earlier design based on the flying sub. the top one was a weight trim design and the bottom one is a trim tank design. of coarse the tanks would have to be changed top to bottom but I have abandoned this idea for the other.
thankfully yours,
Chad Beller
east tx
Hello unnammed stranger,
A normal ballast system have 2 systems (like yours)
exept that one system is ambient (for surface) and the other system is 1atm
(trim) so, as you said, the boyancy won't change as you go deeper.
When I look at your system I don't see why you
devide your 2 systems since they will work the same way. I think it would work
the same if you only had 1 ambient system.
I also don't see how it could be simplier for the
piping.
Pierre Poulin
----- Original Message -----
Sent: Monday, September 04, 2006 2:42
AM
Subject: [PSUBS-MAILIST] new hull
design
all this talk about getting back to subs but everyone still
seems to be arguing over issues. I was waiting for a fist fight at the end of
this pissing contest then we can all hose the testosterone off the decks and
go on eh. I'm just a newbie so don't mind my little joke. I did have some ques
regarding a new design I am trying to come up with to minimize exterior piping
and make lines and valving simpler inside the hull. my trim tanks will be a
closed sys and I am not sure if this is necicary or not. I was concerned with
the air in my trim tanks loosing mass as I drive deeper if I leave them
ambiant which would cause my sub to become neg boyant at depth. The other
concern is that if the trim tanks are a closed sys is the wall seperating the
main tanks from the trim tanks need to be reinforced? as for the other ques
that I have had earlier I found a place I should have known to look for
affordable parts and sealed rotating assemblies. grainger.com has ! a
wide variety of parts for those interested in looking. they also have a few
co2 and o2 meters avalible and a wide variety of hydrolic as well as
peunamatic parts for fabrication.
any
thoughts on rectangular port view holes instead of round.