[SPAM] RE: Unusal Props

[Bill Glaze]

At the same time that Toshiba sold our submarine propeller design to the 
Russians, and the machinery to make them to the Norwegians.  It all 
happened ~1987+/-
As is known, a submarine's most potent weapon is the fact that it is 
nearly undetectable; the propeller design is a major function of that 
low noise emission, per the new Seawolf class of boats.
Dean Pappas wrote:

> That's right, and it was a closely held technology until only a few 
> years before APCs became available.
>  
> The benefits of the scimitar shape for delaying compressibility 
> effects at high prop tip Mach numbers have been known since WW2. As it 
> turns out, Von proved the value of knowing how to read!
>  
>
> Dean Pappas
> Sr. Design Engineer
> Kodeos Communications
> 111 Corporate Blvd.
> South Plainfield, N.J. 07080
> (908) 222-7817 phone
> (908) 222-2392 fax
> d.pappas at kodeos.com
>
>     -----Original Message-----
>     From: discussion-request at nsrca.org
>     [mailto:discussion-request at nsrca.org]On Behalf Of DaveL322 at comcast.net
>     Sent: Wednesday, November 17, 2004 1:44 PM
>     To: discussion at nsrca.org
>     Subject: [SPAM] RE: Unusal Props
>
>     I believe the CAD/CAM, software, algorithms, etc used to develop
>     the technology/process for the APC prop line came from "quiet"
>     propellers on submarines.
>      
>     Regards,
>      
>     Dave Lockhart
>     DaveL322 at comcast.net <mailto:DaveL322 at comcast.net>
>      
>
>         -------------- Original message --------------
>         Dave Von Linsowe was experimenting with semi-scimitar shaped
>         props at that time, I wonder if APC was influenced by his efforts.
>          
>          
>          
>         Rich
>          
>
>              
>             -----Original Message-----
>             From: discussion-request at nsrca.org
>             [mailto:discussion-request at nsrca.org] On Behalf Of
>             Rcmaster199 at aol.com
>             Sent: Wednesday, November 17, 2004 1:32 PM
>             To: discussion at nsrca.org
>             Subject: Re: Unusal Props
>
>             Yes we do. The semi-scimitar design was a huge departure
>             from the "Normal". I heard from many "...what an ugly
>             prop.....never will use.... blah, blah, blah...." among
>             other things. But performance has silenced everyone.
>              
>             Matt
>              
>              
>             In a message dated 11/17/2004 1:24:21 PM Eastern Standard
>             Time, rcaerobob at cox.net writes:
>
>                 Mostly the Rev Ups were used because they made our
>                 motors SING!!!  I mean FAST...LOUD...but never went
>                 anywhere.
>                     We didn't know better.
>                  
>                 Then came MK and Asano....
>                 Then this maverick APC thing....Boys, we remember when
>                 THOSE first hit the pits, don't we??????????
>
>                 Bob Pastorello
>                 NSRCA 199  AMA 46373
>                 rcaerobob at cox.net <mailto:rcaerobob at cox.net>
>                 www.rcaerobats.net <http://www.rcaerobats.net/>
>                  
>                  
>
>                     ----- Original Message -----
>                     From: Eddie Batchelor
>                     <mailto:perkinsrx at centurytel.net>
>                     To: discussion at nsrca.org
>                     <mailto:discussion at nsrca.org>
>                     Sent: Wednesday, November 17, 2004 12:18 PM
>                     Subject: RE: Unusal Props
>
>                     True  It might be that.
>                     I don't think I've ever seen a prop labeled as to
>                     how many blades.
>                     Interesting thought
>                     I like you're "tlarld"
>
>                     the prop markings are like this
>                               2
>                           12  O  5
>                             REV-UP
>
>                     with the "O" being the hole in the middle.
>
>                     It's times like this I wish the "list" could
>                     handle pictures. <G>
>
>                     Eddie
>
>              
>              
>
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