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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Here is a <a href="http://www.adafruit.com/product/746">10Hz update rate GPS</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;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;color:windowtext'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext'> NSRCA-discussion [mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>John Gayer via NSRCA-discussion<br><b>Sent:</b> Friday, May 8, 2015 10:34 PM<br><b>To:</b> Peter Vogel; General pattern discussion<br><b>Subject:</b> Re: [NSRCA-discussion] Could this allow automated scoring?<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>The judges are expected to consider the track of the plane in an earth coordinate system. For example the judges are supposed to consider that a 45 degree climb appears steeper at the end of the box than it does in the center. So the track should be analyzed by the judges in an earth coordinate system and the track of the model rather than attitude. <br><br>The location of the pilot is actually irrelevant but the location of the box is clearly of critical importance. Knowing the actual location of the plane with a fairly quick update rate is critical. At 120 feet/sec(approx 80 mph), horizontal position is no problem. At this speed you need an update rate of about 80 milliseconds to get a data point about every 10 feet. Not sure how good the GPS update rates are these days but this should be achievable. IF the altitude update rate is too slow then augment with an altimeter. Since we are downloading this data from the model, roll attitude could be transmitted as well for wings level.<br><br>We would still need a zero judge for snaps, spins and stall turns and to establish when the pilot is lost in a maneuver. It might be necessary to have an "advance to the next maneuver" switch for that case.<br><br>It would actually be a fascinating project to download accelerations, roll, yaw and pitch rates for analysis while observing snaps visually to see if standards could be established about what is a snap and what isn't.<br><br>John<o:p></o:p></p><div><p class=MsoNormal>On 5/8/2015 1:24 PM, Peter Vogel via NSRCA-discussion wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>Not by itself. Judging/Scoring is from the perspective of the pilot + judges, not from the perspective of the plane. (As opposed to IAC, where it's from the perspective of the pilot in the plane). For it to be done right you'd need to know the precise location of the plane and the precise location of the pilot, then calculate the geometry of the plane's movements relative to the perspective of the pilot's location. <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The SoloShot 2 automatic cameraman does close to what we want in tracking the movement of the plane relative to a ground station, but from that you'd still need to calculate geometries, and wings level, etc.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Peter+<o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>On Fri, May 8, 2015 at 11:44 AM, Keith Hoard via NSRCA-discussion <<a href="mailto:nsrca-discussion@lists.nsrca.org" target="_blank">nsrca-discussion@lists.nsrca.org</a>> wrote:<o:p></o:p></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>Cheap, <a href="http://goo.gl/mZg6RG" target="_blank">Centimeter accuracy GPS</a>.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>No more complaints about biased judging?</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'> </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'>-Keith Hoard</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:14.0pt'><a href="mailto:klhoard@hotmail.com" target="_blank">klhoard@hotmail.com</a></span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p></div></div><p class=MsoNormal><br>_______________________________________________<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" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p></blockquote></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><p class=MsoNormal>Director, Fixed Wing Flight Training<o:p></o:p></p></div><div><p class=MsoNormal>Santa Clara County Model Aircraft Skypark<o:p></o:p></p></div><div><p class=MsoNormal>Associate Vice President, Academy of Model Aeronautics District X<o:p></o:p></p></div><p class=MsoNormal><img border=0 width=200 height=154 id="_x0000_i1025" src="http://farm8.staticflickr.com/7163/6513778381_5569cc985d_m.jpg"><img border=0 width=200 height=136 id="_x0000_i1026" src="https://googledrive.com/host/0B4LOPeyGAgOJUVJmU1dJMVl6WWc/AcademyModelAeronauticsLogo.png"><o:p></o:p></p></div></div></div><p class=MsoNormal><br><br><br><o:p></o:p></p><pre>_______________________________________________<o:p></o:p></pre><pre>NSRCA-discussion mailing list<o:p></o:p></pre><pre><a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></pre><pre><a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></pre></blockquote><p class=MsoNormal><o:p> </o:p></p></div></body></html>