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Re: Diesels and electro. at the same time?
Posted by: Marc Cimon ()
Date: March 05, 2002 01:33AM

Hi Lief, maybe the chart gave surfaced speed for the diesels and submerged speed for the e-motors, It would make sense to require more power (RPM) to push the sub while in "dive" condition.
I asked in this forum about the shafting arrangement of a typical u-boat and there is: The diesel engine, a clutch, the e-motor/generator, another clutch and the tail (propeller) shaft. In surfaced condition with both clutches engaged, the diesel suplies power and control the speed of the shaft line, in case of a "double emergency" the electric motor only add about 400HP to the shaft, this would not increase the shaft RPM by much... 5 to 10 ??
As for the E-motor speed, assuming a compound motor heavy on the serie side, the motor field current is the main speed control, the lower it is, the faster the motor turns, load permitting.

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Subject Written By Posted
Diesels and electro. at the same time? Leif... 03/04/2002 01:37PM
Re: Diesels and electro. at the same time? walter M 03/04/2002 05:47PM
Re: Diesels and electro. at the same time? Marc Cimon 03/05/2002 01:33AM
Re: Diesels and electro. at the same time? Leif... 03/05/2002 06:44AM
Re: Diesels and electro. at the same time? Einar 03/09/2002 01:19PM
Re: Diesels and electro. at the same time? J.T. McDaniel 03/09/2002 08:27PM
Re: Diesels and electro. at the same time? Oscar Bustamante 03/14/2002 01:22AM
Re: MAK/DWK Rainer Bruns 03/14/2002 03:53AM
Re: MAK/DWK diesels Oscar Bustamante 03/14/2002 11:21PM
Re: MAK/DWK diesels Rainer Bruns 03/15/2002 04:03AM
Re: MAK/DWK diesels Oscar Bustamante 03/15/2002 11:43PM
Re: MAK/DWK diesels Rainer Bruns 03/16/2002 04:40AM
Re: MAK/DWK diesels Oscar Bustamante 03/19/2002 11:15PM
Re: MAK/DWK diesels Rainer Bruns 03/20/2002 04:26AM
Re: MAK/DWK diesels Vincenzo 12/10/2002 09:42PM


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