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Jim, As I now understand it, most psubs travel at speeds at or below 3 kts. This speed is the lowest end needed for planes control of depth and angle. It would be fun to design a sub capable of faster travel and control these things with plane surfaces as apposed to motor thrusts. The real issue I would have to solve is the stern planes, rudder, and bow planes would have to be controlled from a single control station...something I am used to having done from two. David Bartsch To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] counter rotational From: jimtoddpsub@aol.com Date: Thu, 30 Dec 2010 07:44:39 +0000 David, I'm sure it varies, but 10 percent increased efficiency is sometimes quoted. -JT Sent on the Sprint® Now Network from my BlackBerry® From: David Bartsch <dbartsch2236@hotmail.com>
Sender: owner-personal_submersibles@psubs.org
Date: Thu, 30 Dec 2010 02:37:39 -0500
To: <personal_submersibles@psubs.org>
ReplyTo: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] counter rotational
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? |