[NSRCA-discussion] Judges' Positioning, Zero Lines, and Box Definition

[Don Ramsey]

Matt,

In FAI the judges should be 7 to 10 (22 feet to about 33 feet) meters behind the pilot.  This is in the Sporting Code.  All judges should calibrate themselves to the box by standing at the pilots position and finding a distant reference for the box, then return to their chair and insure that reference is visible.  If you are too close to the pilot and caller some maneuvers can be lost as they pass in front of the pilot. 

AMA says the judges should not be more than 10 meters (33 feet) back from the pilot  The NATS judges are about 20 feet behind the pilot.  AMA also says the judges should be within the extension of the 60 degree lines.  This gives a good view of center, gives a little better perspective of the geometry and allows good definition of the box if the judge did the calibration.

Don

  ----- Original Message ----- 
  From: Matthew Frederick 
  To: nsrca-discussion at lists.nsrca.org 
  Sent: Saturday, May 12, 2007 1:29 PM
  Subject: [NSRCA-discussion] Judges' Positioning, Zero Lines,and Box Definition


  OK, this forum has been too quiet lately, so let's get some controversy going! This comment/question is mainly directed to Don Ramsey, but I would appreciate everyone's opinion. The good thing is, Don was at the contest where what I'm about to describe happened. What I'm talking about here is the positioning of judges behind the pilot. Under most circumstances the judges are positioned maybe 3-5 feet behind the pilot with each judge's seat placed on (or very close to) one of the 60-degree lines. Now, at a contest I attended last week the judges apparently decided it was too hot out there on the actual flight line, and they moved their chairs about 15-20 feet behind the pilot in the shade of the shed at this particular field. My question is, should this be something that is allowed since the judges' chairs define the zero line of the flight line (and moving it back this far puts spectators in danger), and also because it gives the judges an even more skewed view of the 60-degree lines than they already have? I bring this up partly because of what Don wrote in this month's K-Factor, but also because I was gigged for busting the box by these "displaced" (in Louisiana we call them refugees) judges when in fact, I knew I was close to the edge, but since I was actually standing on the line, I knew I didn't bust it. As a pilot I should not have to adjust the size of the box that I'm permitted to fly in just so the judges can be more comfortable (granted, comfort in the heat and humidity of Louisiana is relative). I didn't bring it up at the contest because by the time it bit me, it was too late to complain. In the future, however, I think there need to be rules regarding the positioning of judges if there aren't already, and if there are rules, let's bring them to light and enforce them, and you can bet I'll refuse to fly before judges that are that far behind me. Then again, I also think the close edge of the runway should be the zero line on maneuvers, not the judges' chairs. I did a little (ok, a lot) of math to figure out how much box a pilot would be missing out on with the judges postitioned 15 feet behind him. Using approximated numbers from the contest in question I calculated that if the poles are 40 feet out from the pilot, and the judges are 15 feet behind the pilot, the box size at 150 meters (which is 259.81m) based on the judges' point of view is reduced by 232.61 feet (70.9 m), or 25.2%! This would have been even greater if the poles were closer in or the judges were further back.

  Matt


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