Re: [PSUBS-MAILIST] Impact Calculations..

[Doc <doc@bionicdolphin.com>]

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