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David,
It's amazing how much cross pollinization goes on with this website. Just recently I'd been considering a contra prop in a Kort nozzle. It's nice to have an idea validated, even by accident.
As for the gearing: I'd been thinking along the lines of the old hand cranked egg-beater where turning the crank handle produces rotation of the beater blades in opposite directions. FWIW
PR
--- On Thu, 12/30/10, David Bartsch <dbartsch2236@hotmail.com> wrote:
From: David Bartsch <dbartsch2236@hotmail.com>
Subject: RE: [PSUBS-MAILIST] counter rotational
To: personal_submersibles@psubs.org
Date: Thursday, December 30, 2010, 2:37 AM
Thanks gang, Torpedo use is definitely out. After a little thought I think the real problem when using such a drive on a submarine would be to be able to seal these two separate shafts from leakage from sea pressure. Still, placing two such props inside a kort nozzle could give some awesome results...I'll follow up on your provided references. David Bartsch
From: JimToddPsub@aol.com Date: Thu, 30 Dec 2010 02:08:21 -0500 Subject: Re: [PSUBS-MAILIST] counter rotational To: personal_submersibles@psubs.org
David, here are a couple of links re contra-rotating shafts.
-Jim
In a message dated 12/30/2010 12:03:38 A.M. Central Standard Time, dbartsch2236@hotmail.com writes:
Anyone have a clue as to how a single shaft dual rotating propeller gear box works? Drawings?
David Bartsch
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