KM makes an important point. Two men died in the JSL because she became entangled in lines from a submerged destroyer off the coast of Florida and could not surface. Streamline design is more about safety than speed, in my book.
for me, the streamling isn't so much for drag, as to reduce the risk of entanglement. it's always the last thing you expect that gives you the most grief.
-km
>From: "Joseph Perkel" <
joeperkel@hotmail.com>
>Reply-To:
personal_submersibles@psubs.org
>To:
personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] Drag
>Date: Sun, 17 Sep 2006 23:12:30 +0000
>
>
>
>Nothing demonstrates Jay's statement quite like the JSL.......
>
>
>
http://oceanexplorer.noaa.gov/explorations/05deepscope/logs/aug31/media/eits_on_sub_rs.html
>
>This submersible convinced me not to bother with fairings for the external >air cylinders and battery pods.
>
>Joe
>
>
>
>
>From: "Jay K. Jeffries" <
bottomgun@mindspring.com>
>Reply-To:
personal_submersibles@psubs.org
>To: <
personal_submersibles@psubs.org>
>Subject: [PSUBS-MAILIST] Drag
>Date: Sun, 17 Sep 2006 19:00:14 -0400
>
>
>
>
>
>
>
>
>
>
>
>At the typical speeds a PSUB travels at, protrusion drag is very small. >There are other issues you should focus on.
>
>R/Jay
>
>
>
>
>Respectfully,
>
>Jay K. Jeffries
>
>Andros Is., Bahamas
>
>
>
>It is the mark of an educated mind to be able to entertain a thought >without accepting it.
> - Aristotle
>
>
>
>
>
>
>
>
>
>
>
>
>
>From:
owner-personal_submersibles@psubs.org >[
mailto:owner-personal_submersibles@psubs.org] On Behalf Of >
ShellyDalg@aol.com
>Sent: Sunday, September 17, 2006 6:52 PM
>To:
personal_submersibles@psubs.org
>Subject: Re: [PSUBS-MAILIST] Flow testing-freeboard and swamping.
>
>
>
>
>Ron. Keep adding your 2 cents. I was thinking of a way to add inflating >ballast to give more freeboard when at the surface. Maybe hidden behind a >retractable fairing to minimize drag when submerged.
>
>
>Frank D.
>
>
>
>
>
>************************************************************************
>************************************************************************
>************************************************************************
>The personal submersibles mailing list complies with the US Federal
>CAN-SPAM Act of 2003. Your email address appears in our database
>because either you, or someone you know, requested you receive messages
>from our organization.
>
>If you want to be removed from this mailing list simply click on the
>link below or send a blank email message to:
>
removeme-personal_submersibles@psubs.org
>
>Removal of your email address from this mailing list occurs by an
>automated process and should be complete within five minutes of
>our server receiving your request.
>
>PSUBS.ORG
>PO Box 311
>Weare, NH 03281
>603-529-1100
>************************************************************************
>************************************************************************
>************************************************************************
>
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 311
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************