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Message-ID: <1c23473f0702281819u55e86a78j704a986123c2548e@mail.gmail.com>
Date: Wed, 28 Feb 2007 18:19:59 -0800
From: "David Leonard" <wdleonard@gmail.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Diffuser Design Rules
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Hi Ed,

Pretty slides.  They SEEM authoritative but who gets to write the "rules"?
:-)  In other words, where is the rest of the data.  I completely agree that
a streamline duct is better than the conventional duct, and that
separation needs to be avoided.  But do you have any data comparing a
restricted neck style to a regular streamline duct?

Dave Leonard




>
>
> Once again, the only "creative" bit of thinking on my part was the pinched
> duct in order to cope with the limitations of having a very small area for a
> duct.  All the rest of the credit belongs to K&W and Horner as well as few
> others.
>
>
> Ed
>

-- 
David Leonard

Turbo Rotary RV-6 N4VY
My websites at:
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/_ht_a/vp4skydoc/index.html
http://leonardiniraq.blogspot.com

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<div>Hi Ed,</div>
<div>&nbsp;</div>
<div>Pretty slides.&nbsp; They&nbsp;SEEM authoritative but who gets to write the &quot;rules&quot;?&nbsp; :-)&nbsp; In other words, where is the rest of the data.&nbsp; I completely agree that a streamline duct is better than the conventional duct, and that separation&nbsp;needs to be avoided.&nbsp; But do you have any data comparing a restricted neck style to a regular streamline duct?
</div>
<div>&nbsp;</div>
<div>Dave Leonard</div>
<div>&nbsp;</div>
<div><br>&nbsp;</div>
<div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">
<div bgcolor="#ffffff">
<div>&nbsp;</div>
<div><font face="Arial"></font>&nbsp;</div>
<div><font face="Arial">Once again, the only &quot;creative&quot; bit of thinking on my&nbsp;part was the pinched duct in order to cope with the limitations of having a very small area for a duct.&nbsp; All the rest of the credit belongs to K&amp;W and Horner as well as few others.
</font></div>
<div>&nbsp;</div>
<div><font face="Arial"></font>&nbsp;</div>
<div><font face="Arial">Ed</font></div></div></blockquote></div><br>-- <br>David Leonard<br><br>Turbo Rotary RV-6 N4VY<br>My websites at:<br><a href="http://members.aol.com/_ht_a/rotaryroster/index.html">http://members.aol.com/_ht_a/rotaryroster/index.html
</a><br><a href="http://members.aol.com/_ht_a/vp4skydoc/index.html">http://members.aol.com/_ht_a/vp4skydoc/index.html</a><br><a href="http://leonardiniraq.blogspot.com">http://leonardiniraq.blogspot.com</a> 

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