[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [PSUBS-MAILIST] Flowserve Pleuger Azimuthing Thrusters




See,  let the information flow from the source.    Salute to Hugh for the data. ;}

Loads of material on the Coanda Effect when you google the right word.

 
http://www.google.com/search?q=Coanda+effect&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a


Regards,

Szybowski





From: hc.fulton@gmail.com
To: personal_submersibles@psubs.org
Subject: FW: [PSUBS-MAILIST] Flowserve Pleuger Azimuthing Thrusters
Date: Fri, 10 Jul 2009 09:08:11 +1200

Just a correction is that it is a Coanda effect.  Or wall effect which is a fluid which attaches itself to a wall. Hugh

 



In looking at how I wish to configure my side thrusters, I'm considering tilting my trusters towards the point of the bow when horizontal 3 to 7 degrees.  This is to negate the friction or thrust attachment as the outflow of the thrusters hit the hull.   A principle they refered to as the gonda (SP) effect.  I don't have the correct spelling, so my searches have not come up with any relevant data. Perhaps one of you gentlemen know.
 
After looking at the below data I would be interesting in your guys input.
 
 
Flowserve Data
 
Pleuger Type WFSD Azimuthing Thrusters
 
http://thruster.flowserve.com
 
 
The usefull thrust of a thruster, can be adversely affected by thruster hull, and thruster thruster interaction loses. 
 
They use a 7 degree tilted axes to there thrusters to reduce thruster loses by up to 15 to 25% due to friction or thrust attachment.  A principle refered to as the gonda (SP) effect.
 
Even when mounted at a mid point of the longnitudinal portion of a ship thruster loses can be 10 to 15%.
 
Flowserve uses a 97 degree bevel gear that creates there 7 degree tilted axes thruster angle. This eliminates thrust attachment and associated losses.
 
The 7 degree tilted axes thrusters signifiagantly reduce conditions for adverse inflow conditions when dealing with thrusters pointing toward thrusters."
 
http://www.youtube.com/watch?v=PzjFEe47bzA
 

Regards,

Szybowski





__________ Information from ESET NOD32 Antivirus, version of virus signature database 4219 (20090705) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com



__________ Information from ESET NOD32 Antivirus, version of virus signature database 4219 (20090705) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com