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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I read it. But this was new data about full scale (to me
anyway), which we have been trying to mimic per the rule book forever, which brought
clarity to me. Just thought I would share.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Bill
Glaze<br>
<b>Sent:</b> Sunday, February 28, 2010 10:37 AM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] SNAPS ! AGAIN !<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Did
you not read the essay by Jerry Budd a few months ago? Verified by Ron
van Putte. Both are qualified aerodynamicists. I have done hours of
studies on snap rolls and anallyzed them in slow motion, and they in no way
fulfill the qualifications presently in the rule books.</span><o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
rules need rewording.</span><o:p></o:p></p>
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<p class=MsoNormal> <o:p></o:p></p>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Bill
Glaze</span><o:p></o:p></p>
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<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
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<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'> <a href="mailto:khoard@gmail.com"
title="khoard@gmail.com">Keith Hoard</a> <o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:nsrca-discussion@lists.nsrca.org"
title="nsrca-discussion@lists.nsrca.org">General pattern discussion</a> <o:p></o:p></span></p>
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<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Saturday, February
27, 2010 11:22 AM<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re:
[NSRCA-discussion] SNAPS ! AGAIN !<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>Why would you let something as
trivial as mathematics (or physics) get in your way?<o:p></o:p></p>
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<p class=MsoNormal>On Sat, Feb 27, 2010 at 8:21 PM, Ron Van Putte <<a
href="mailto:vanputte@cox.net">vanputte@cox.net</a>> wrote:<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>Oh my! I hope John
realizes what he's stepped in here.<br>
<br>
Ron<br>
<br>
On Feb 27, 2010, at 9:36 AM, John Fuqua wrote:<o:p></o:p></p>
<p class=MsoNormal>A full scale friend lent me a book by Alan Cassidy entitled
“Better Aerobatics” which had a formula for determining how many Gs to pull to
enter a snap. It is very enlightening.<br>
<br>
<br>
<br>
Formula is = Recommended entry speed to enter snap divided by the
Power ON stall speed - Squared.<br>
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<br>
His example (Pits S2A) was 105/55 =1.909 (1.909)2 =3.64 Gs.
This means you would try to have an instantaneous 3.64 G
loading if entering the “flick roll” at 105 mph.<br>
<br>
<br>
<br>
What I find fascinating about the formula is the “power on stall” part of the
formula. Now translate that into our models which have NO power ON stall
speed. I think this means that mathematically we cannot do a snap.
Or the instantaneous Gs required are impossible to obtain.<br>
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<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<br clear=all>
<br>
-- <br>
<br>
Keith Hoard<br>
Collierville, TN<br>
<a href="mailto:khoard@gmail.com">khoard@gmail.com</a><br>
<br>
<o:p></o:p></p>
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NSRCA-discussion@lists.nsrca.org<br>
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