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Date: Tue, 10 Jul 2012 13:29:48 -0500
From: Charlie England <ceengland@bellsouth.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: First lift off with single rotor
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Kent Paser? (Speed with Economy)

IIRC, he said (it's been repeated by the CAFE test guys in California) 
that *with proper in-cowl exit air handling*, you can actually make the 
exit slightly smaller than the inlet. (But not too many have been able 
to achieve that.)


Charlie


On 07/10/2012 11:44 AM, Dwayne Parkinson wrote:
> There was a guy who optimized his Mustang for performance.  He wrote a 
> book which I don't recall the title of but it was all about the 
> performance tests and modifications he made and the corresponding 
> speed gains.  Anyhow, he discovered that for his installation the exit 
> should be 1.1 times the intake.  For what it's worth....
>
> Dwayne
>
> ------------------------------------------------------------------------
> *From:* Richard Sohn <res12@fairpoint.net>
> *To:* Rotary motors in aircraft <flyrotary@lancaironline.net>
> *Sent:* Tuesday, July 10, 2012 10:51 AM
> *Subject:* [FlyRotary] First lift off with single rotor
>
> Analyzed the dimensions of my cowling, and fount the exit openings 
> being about 70% of the inlet openings. Big mistake there. This will be 
> fixed before looking at other options.
> Richard Sohn
> N2071U
>
> http://www.fairpoint.net/~res12/home.html
>
>


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    Kent Paser? (Speed with Economy)<br>
    <br>
    IIRC, he said (it's been repeated by the CAFE test guys in
    California) that *with proper in-cowl exit air handling*, you can
    actually make the exit slightly smaller than the inlet. (But not too
    many have been able to achieve that.)<br>
    <br>
    <br>
    Charlie<br>
    <br>
    <br>
    On 07/10/2012 11:44 AM, Dwayne Parkinson wrote:
    <blockquote cite="mid:list-5645732@logan.com" type="cite">
      <div style="color:#000; background-color:#fff; font-family:arial,
        helvetica, sans-serif;font-size:12pt">
        <div><span>There was a guy who optimized his Mustang for
            performance. &nbsp;He wrote a book which I don't recall the title
            of but it was all about the performance tests and
            modifications he made and the corresponding speed gains.
            &nbsp;Anyhow, he discovered that for his installation the exit
            should be 1.1 times the intake. &nbsp;For what it's worth....</span></div>
        <div><span><br>
          </span></div>
        <div><span>Dwayne</span></div>
        <div><br>
        </div>
        <div style="font-family: arial, helvetica, sans-serif;
          font-size: 12pt; ">
          <div style="font-family: 'times new roman', 'new york', times,
            serif; font-size: 12pt; ">
            <div dir="ltr"> <font face="Arial" size="2">
                <hr size="1"> <b><span style="font-weight:bold;">From:</span></b>
                Richard Sohn <a class="moz-txt-link-rfc2396E" href="mailto:res12@fairpoint.net">&lt;res12@fairpoint.net&gt;</a><br>
                <b><span style="font-weight: bold;">To:</span></b>
                Rotary motors in aircraft
                <a class="moz-txt-link-rfc2396E" href="mailto:flyrotary@lancaironline.net">&lt;flyrotary@lancaironline.net&gt;</a> <br>
                <b><span style="font-weight: bold;">Sent:</span></b>
                Tuesday, July 10, 2012 10:51 AM<br>
                <b><span style="font-weight: bold;">Subject:</span></b>
                [FlyRotary] First lift off with single rotor<br>
              </font> </div>
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                <div dir="ltr">
                  <div style="font-family: Calibri; color: rgb(0, 0, 0);
                    font-size: 12pt; ">
                    <div>Analyzed the dimensions of my cowling, and
                      fount the exit openings being about 70% of the
                      inlet openings. Big mistake there. This will be
                      fixed before looking at other options.</div>
                    <div>&nbsp;</div>
                    <div style="font-family: Calibri; color: rgb(0, 0,
                      0); font-size: 12pt; ">Richard Sohn<br>
                      N2071U<br>
                      <br>
                      <a class="moz-txt-link-freetext" href="http://www.fairpoint.net/~res12/home.html">http://www.fairpoint.net/~res12/home.html</a></div>
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