Re: [PSUBS-MAILIST] Impact Calculations..

["James" <james@whototake.com>]

Yes I would definitely like that info if it's not too much trouble. Thanks.

James

----- Original Message -----
From: "Doc" <doc@bionicdolphin.com>
To: <personal_submersibles@psubs.org>
Sent: Tuesday, July 02, 2002 1:08 PM
Subject: Re: [PSUBS-MAILIST] Impact Calculations..


> The Bionic Dolphin was designed more for high speed impact than for depth,
> to withstand being slammed by monster waves or hitting rocks and stumps
> at 10 to 30 feet deep.
>  In this group of mostly steel and acrylic deep sub builders my experience
> is most likely OFF TOPIC, but if you'd like I could pass on some info on
> composite exohulls.
>
> Doc
>
> Carsten Standfuss wrote:
>
> > Alec Smyth schrieb:
> > >
> > > I haven't actually calculated that one (I don't know how), but I did
take
> > > collisions into account somewhat in my design. My dome has a safety
factor
> > > of six, which I arrived at per PVHO. But what I'm doing is enclosing
that in
> > > a second thinner dome which will be free-flooding. Vance Bradley made
a good
> > > suggestion to me once to make the flood holes smallish, so that in
case of
> > > an impact the water would exit them slowly and the second dome would
act as
> > > a shock absorber. Greg Cottrell also had a suggestion for it, although
it is
> > > unrelated to the collision topic... he suggested adding a UV filter to
the
> > > acrylic formulation on the second dome so as to protect the thick one
inside
> > > from the sun.
> > >
> > > cheers,
> > >
> > > Alec
> > >
> > And the best is.. it prevents the main dome from scratch during standing
> > onshore..
> > All the kids testing the glas hardness, all the psuber which want to
> > help to lift the
> > boat on the trailer .. :-)  Carsten
>
>