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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Thanks Jeff…<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><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Without taking my statement out of context, it implies that a fast rotating barrel roll may present itself similarly and be misinterpreted as a conical rotation. If you are only watching the tail, one could be fooled as the action take place in a fraction of a second. Please reference the preceding paragraph where I clearly state:<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><p class=MsoNormal><b><i><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>“</span></i></b><b><i><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>One can easily argue that if the tail displays a conical rotation, therefore the nose must have displayed a conical rotation. This is clearly a fact.”<o:p></o:p></span></i></b></p><p class=MsoNormal><b><i><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></i></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>If one wishes to ignore the previous comments and take my statement out of context, then yes it would be incorrect. The answer to your question is explained in the preceding paragraph.<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><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Verne provided a great response in which I will work on to calibrate my eye to judge correctly.</span><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><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><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'>Larry Diamond</span><span style='color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Jeff Worsham [mailto:jeffryworsham@gmail.com] <br><b>Sent:</b> Saturday, March 25, 2017 10:28 PM<br><b>To:</b> Larry Diamond <ldiamond@diamondrc.com>; General pattern discussion <nsrca-discussion@lists.nsrca.org><br><b>Subject:</b> Re: [NSRCA-discussion] Judging the Snap<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Larry,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I appreciate your opinion here: “<span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>I</span><span style='font-family:"Calibri",sans-serif;color:#1F497D'>MHO… It is a fallacy to state that, “because the tail displays a conical rotation, it must be that the heading did break from the flight path”.</span><o:p></o:p></p></div><div><p class=MsoNormal>But I don’t understand. How can the tail get into a conical rotation about the CG unless there was a pitch break? <o:p></o:p></p></div><div><p class=MsoNormal>Thanks in advance,<o:p></o:p></p></div><div><p class=MsoNormal>Jeff<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>On Mar 25, 2017, at 10:32 AM, Larry Diamond via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Earl,</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Yes I have read your article a few times. I believe it supports what is in the rule book and that a pattern plane can actually perform a snap.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>My concern is more related to how are we actually judging, I don’t think we are locked into judging the snap at contests the way it is intended because of pushback when, in my opinion, it is scored based on the presentation… a low or zero score.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>One can easily argue that if the tail displays a conical rotation, therefore the nose must have displayed a conical rotation. This is clearly a fact. Except a fast barrel roll the tail and the nose are on the same plain in reference to CG, thus “No Stall” condition. It is just that, a fast barrel roll. If you are only looking at the CG and not aware of the Nose/Tail orientation, you would deduct “5” because the CG barrel rolled around the flight path. However, the correct application to the rule is a zero, because there was no clear break in heading and the nose/tail is on the same plain in relation to CG.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>IMHO… It is a fallacy to state that, “because the tail displays a conical rotation, it must be that the heading did break from the flight path”.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>What am I missing?</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Best Regards,</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D'>Larry Diamond</span><o:p></o:p></p></div></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'> </span><o:p></o:p></p></div><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><div><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span class=apple-converted-space><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> </span></span><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>NSRCA-discussion [<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org">mailto:nsrca-discussion-bounces@lists.nsrca.org</a>]<span class=apple-converted-space> </span><b>On Behalf Of<span class=apple-converted-space> </span></b>Earl Haury via NSRCA-discussion<br><b>Sent:</b><span class=apple-converted-space> </span>Saturday, March 25, 2017 6:57 AM<br><b>To:</b><span class=apple-converted-space> </span>mups53 <<a href="mailto:mups53@gmail.com">mups53@gmail.com</a>>; General pattern discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br><b>Subject:</b><span class=apple-converted-space> </span>Re: [NSRCA-discussion] Judging the Snap</span><o:p></o:p></p></div></div></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>Larry, take a look at this:<span class=apple-converted-space> </span></span><a href="http://www.ckaero.net/blog/2014/11/23/anatomy-of-a-snap-roll/" title="http://www.ckaero.net/blog/2014/11/23/anatomy-of-a-snap-roll/"><span style='font-family:"Calibri",sans-serif;color:purple'>http://www.ckaero.net/blog/2014/11/23/anatomy-of-a-snap-roll/</span></a><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>Earl</span><o:p></o:p></p></div></div><div><div><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> </span><o:p></o:p></p></div></div><div><div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>From:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>mups53 via NSRCA-discussion<span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>Sent:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>Saturday, March 25, 2017 1:53 AM</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>To:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>Larry Diamond ; General pattern discussion<span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal style='background:whitesmoke'><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>Subject:</span></b><span class=apple-converted-space><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> </span></span><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>Re: [NSRCA-discussion] Judging the Snap</span><o:p></o:p></p></div></div></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div></div><div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>Good post. Thanks Larry</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div><div id="composer_signature"><div><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri",sans-serif;color:#575757'>Sent from my Verizon, Samsung Galaxy smartphone</span><o:p></o:p></p></div></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div><div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>-------- Original message --------</span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>From: Larry Diamond via NSRCA-discussion <</span><a href="mailto:nsrca-discussion@lists.nsrca.org"><span style='font-family:"Calibri",sans-serif;color:purple'>nsrca-discussion@lists.nsrca.org</span></a><span style='font-family:"Calibri",sans-serif'>><span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>Date: 3/24/17 8:25 PM (GMT-06:00)<span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>To: General pattern discussion <</span><a href="mailto:nsrca-discussion@lists.nsrca.org"><span style='font-family:"Calibri",sans-serif;color:purple'>nsrca-discussion@lists.nsrca.org</span></a><span style='font-family:"Calibri",sans-serif'>><span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>Subject: [NSRCA-discussion] Judging the Snap<span class=apple-converted-space> </span></span><o:p></o:p></p></div></div><div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'> </span><o:p></o:p></p></div></div></div><div><div><p class=MsoNormal>Since getting back into Pattern and based on last year’s observations at a couple of contests, it seems to me that through evolution it has changed a little over the last 10 years with the Snap Roll downgrades (as it is flown and judged not by the rule book).<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Yes, I took the AMA judging test. However, being a lowly Intermediate since 2004… I do not want be in a position where I scored a maneuver low/zero because I didn’t understand what it’s supposed to look like in the air today.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Also after a couple of discussion with people in different districts there are differing opinions about what a Snap is and isn’t; and, when an Intermediate/Advanced pilot should or shouldn’t score a zero to higher skill level pilots.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Set aside the rule book, as I think it is very clear… I’m asking what is being applied in the actual Judging of contests today. I keep hearing about a little relief because a Pattern Planes can’t actually Snap (stall) properly.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>The Snap is a fast rotation, which is very difficult to see every downgrade.<span class=apple-converted-space> </span><b><u>What visual cue</u></b><span class=apple-converted-space> </span>should we look for when a very shallow break may/may not be present, but to the eye it looks like a rapid barrel roll.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>At what point does the Snap maneuver earn a zero?<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Let’s be honest with ourselves as to what is actually being practiced (judged)… With the underlined verbiage, are we zeroing the maneuver; or, simply downgrading to prevent conflict because a zero was scored.<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal><b>The Rule from 2016-2017</b><o:p></o:p></p></div><div><p class=MsoNormal><i>Snaps: A snap roll is a rapid rotation where the<span class=apple-converted-space> </span><u>fuselage nose makes a detectable break in heading</u><span class=apple-converted-space> </span>from its track in pitch and yaw for the duration of the roll but the track follows the line of the maneuver (straight or arced):</i><o:p></o:p></p></div><div><p class=MsoNormal><i>1. Large deviations from the flight path, indicative of a delayed stall, are to be downgraded using the 1 point per 15-degree rule for each axis of the excursion. For example, it the model pitches its track 15 degrees nose up and the wings rotate 15 degrees before the yaw is applied, the maneuver should be downgraded 1 point for pitch and 1 point for roll.</i><o:p></o:p></p></div><div><p class=MsoNormal><i>2. The track visualized as the path of the center of gravity (CG) should closely follow the geometric flight path of the maneuver<span class=apple-converted-space> </span><u>while the nose and tail rotate through opposite helical arcs around the flight path. Lack of these helical arcs (or coning)</u><span class=apple-converted-space> </span>is indicative of an<span class=apple-converted-space> </span><u>axial roll and is scored zero</u>.</i><o:p></o:p></p></div><div><p class=MsoNormal><i>3. If the track corkscrews or barrel rolls, it is severely downgraded (more than 5 points).</i><o:p></o:p></p></div><div><p class=MsoNormal><i>4. Snap rolls have the same judging criteria as axial rolls as far as start and stop of rotation, constant flight path through the maneuver and centering on lines.</i><o:p></o:p></p></div><div><p class=MsoNormal><i>5. If the heading does not remain deviated for the entire roll it is downgraded 1 point per 15 degrees.</i><o:p></o:p></p></div><div><p class=MsoNormal><i>6. Airspeed is not a criterion which should be used to judge this maneuver. The wing of the model is stalled during this maneuver; therefore a significant decrease in speed may occur and is not a cause for downgrade.</i><o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>Larry Diamond<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><div><p class=MsoNormal>P.S. I am hoping this will be an above board and honest discussion. I just want to make sure I am doing the right thing here.<o:p></o:p></p></div></div><div class=MsoNormal align=center style='text-align:center'><span style='font-family:"Calibri",sans-serif'><hr size=2 width="100%" align=center></span></div><div><p class=MsoNormal><span style='font-family:"Calibri",sans-serif'>_______________________________________________<br>NSRCA-discussion mailing list<br></span><a href="mailto:NSRCA-discussion@lists.nsrca.org"><span style='font-family:"Calibri",sans-serif;color:purple'>NSRCA-discussion@lists.nsrca.org</span></a><span style='font-family:"Calibri",sans-serif'><br></span><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion"><span style='font-family:"Calibri",sans-serif;color:purple'>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</span></a><o:p></o:p></p></div></div></div></div><p class=MsoNormal><span style='font-size:9.0pt;font-family:"Helvetica",sans-serif'>_______________________________________________<br>NSRCA-discussion mailing list<br><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></span><o:p></o:p></p></div></blockquote></div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>