Return-Path: Received: from mail.viclink.com ([66.129.220.6] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3184213 for flyrotary@lancaironline.net; Thu, 22 Apr 2004 09:13:36 -0400 Received: from mail.viclink.com (p161.AS1.viclink.com [66.129.192.161]) by mail.viclink.com (8.11.7/8.11.7) with ESMTP id i3MDDYX50962 for ; Thu, 22 Apr 2004 06:13:34 -0700 (PDT) Message-ID: <4087C53C.6060306@mail.viclink.com> Date: Thu, 22 Apr 2004 06:14:37 -0700 From: Perry Mick User-Agent: Mozilla/5.0 (Windows; U; Win95; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Performance Props References: Content-Type: multipart/alternative; boundary="------------040400080007060701040906" X-RAVMilter-Version: 8.4.3(snapshot 20030217) (mail.viclink.com) --------------040400080007060701040906 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit echristley@nc.rr.com wrote: > > >>Ernest: >> >>I would recommend you purchase that book. They are >> >> >not really my > > >>algorithms >>and I don't want to be accused of copyright >> >> >infringement. The > > >>reason it >>can't easily be put in a spreadsheet is it is >> >> >really numerical > > >>calculus and >>the program runs multiple loops (finite steps >> >> >whereas in calculus > > >>the step >>size is taken to the limit of zero) to develop the >> >> >performance of a > > >>complete >>blade. >> >>Perry >> >> >> > > >Hmmm... A search on Amazon says that its not >available. There's an author that has put a chapter >of his book dealing with duct design online. I >believe that is Martin Hollman, but I'm at work now >and don't have access to my bookmarks. Do you have >a pointer to where it can be purchased? > > > http://www.aircraftspruce.com/catalog/bvpages/prop_duct.php -- Perry Mick http://www.ductedfan.com --------------040400080007060701040906 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit echristley@nc.rr.com wrote:

Ernest:

I would recommend you purchase that book. They are

not really my

algorithms 
and I don't want to be accused of copyright

infringement. The

reason it 
can't easily be put in a spreadsheet is it is

really numerical

calculus and 
the program runs multiple loops (finite steps

whereas in calculus

the step 
size is taken to the limit of zero) to develop the

performance of a

complete 
blade.

Perry



Hmmm... A search on Amazon says that its not
available.  There's an author that has put a chapter
of his book dealing with duct design online.  I
believe that is Martin Hollman, but I'm at work now
and don't have access to my bookmarks.  Do you have
a pointer to where it can be purchased?

http://www.aircraftspruce.com/catalog/bvpages/prop_duct.php

-- 
Perry Mick
http://www.ductedfan.com

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