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Shaughn, do you have any more info on how
you are dropping those 4 weights? I think I’m past making holes in the
pressure hull at this point, but just curious whether you have a dropping
mechanism in mind that does not imply through-hulls. I’m using a 1.5”
shaft through the hull, with a cam shaped channel machined into it. But as
someone pointed out, it’ll only drop the weight if the sub is upright. Thanks, Alec -----Original Message----- In a message dated 2/17/04 7:43:20
PM Pacific Standard Time, SFreihof@aol.com writes:
I can't answer for Alec, but in my
case, I chose not to use the traditional single keel-ish drop weight for just
that reason. It became apparent early on that that it also dramatically
limited where I could place other hardware and still maintain relatively
neutral centers of mass and buoyancy that are ideal for hydrobatics.
Because my drop weights (4) are symmetrically located more or less in the
horizontal plane passing through the longitudinal axis of the hull (2 front; 2
back), dropping them doesn't produce a righting moment around that axis. However, they *are* placed to cause
a righting moment between bow and stern. In the event that I
still have my relatively large control surfaces, that righting moment
should help facilitate rising glide. In the event I've also jettisoned
the entire exostructure, being conical, my pressure hull will automatically
float "head up" ... a good thing considering that's where the hatch
is. Warm Regards Shawn ***** |