[SPAM] RE: [SPAM] RE: Unusal Props

[Dean Pappas]

Mark,
You remember that! That was quite a stink, now ... wasn't it.
later,
    Dean
 

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 Mark Grabowski
Sent: Wednesday, November 17, 2004 2:19 PM
To: 'discussion at nsrca.org'
Subject: [SPAM] RE: [SPAM] RE: Unusal Props


So when Hitachi (I believe) released that top-secret sub prop technology to the Russkies in the 80's, we made lemonade out of lemons, eh? ;-)

-----Original Message-----
From: Dean Pappas [mailto:d.pappas at kodeos.com]
Sent: Wednesday, November 17, 2004 12:56 PM
To: discussion at nsrca.org
Subject: RE: [SPAM] RE: Unusal Props


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
 

-------------- 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
www.rcaerobats.net <http://www.rcaerobats.net/> 
 
 

----- Original Message ----- 
From: Eddie Batchelor <mailto:perkinsrx at centurytel.net>  
To: 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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