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Frank, Thanks. I‘ve just spent the morning on the lathe making
new hydraulic motor mounts out of stainless. I kind of like the look of the Hammerhead
shark. He has his dive planes way out in front! That way they don’t need to
be so big. It wasn’t me on the snap roll thing. I am still trying to get my
head around that one. I think it may be something to do with the aerofoil
shape. Fish and larger subs all seem to have their dive planes forward of
half way. Porpoises have two sets one at the 1/3 mark and then the other at the
back. I’ve got my money on your design being all right in the real.
Chs, Hugh From:
owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of ShellyDalg@aol.com In a message dated 9/12/2009 9:30:30 P.M. Pacific Daylight Time,
hc.fulton@gmail.com writes:
Hi Hugh. I like the new pictures. That's a beautiful sub. Good
luck on the re-fit. As for dive planes, I've always thought
that unlike a surface boat, a submarine should have a kinda "fish"
shape. The big Nuke subs are something like a whale and it's the most efficient
shape. If you look at most fish they have little fins
about midway down their bodies and they rotate the leading edges of those
little fins much like we do with the dive planes on our boats. The big subs
have them on the sail like you said to counteract the snap roll thing. Some subs have dive planes in the back to act I assume like the
tail on a whale. I know that's not very scientific but it's an observation. Frank D. Frank D.
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