>I have the impression that some
>features of the maneuvres are
>best judged from another location
>than upwind. e.g. the 45
>degree elevation can much easier
>be judged from the side
>(e.g. 90 degrees on the
>wind direction) The bottoms and
>intersections can best be judged
>by someone standing downwind, when
>the model is passing nearby.
>
>So why are we not positioning
>the judges round the circle,
>each 120 degrees seperated (3
>judges) or 72 degrees (5
>judges). This would also garantee
>isolation from the other judges
>hence no possibility to influence
>one another.
>It is up to the individual
>judge to give a score
>for the features he CAN
>observe. The other features are
>supposed to be dealt with
>by the other judges.
This has been discussed before in other forums. I would be interested to hear from anybody who has actually run a contest by positioning any judge at any location other than upwind of the circle. (This discussion is based on a constant wind direction. Judges will shift relative to wind direction changes is assumed.)
During training flights for the judges at the Nationals and the FAI Team Trials, we have positioned a judge at the crosswind location of the circle (where the judge would be facing into the circle, 90-degrees to the wind). The purpose of doing this is to be able to tell the other judges how close the maneuvers were flown to the 45-degree elevation requirements. The experience we have had with this is that the crosswind judge cannot see any of the shapes of any maneuver except for the takeoff, level flight and landing. Furthermore, even when the judge is at the crosswind location, he or she would generally not be in the optimum position to see the top elevation of every 45-degree maneuver due to the fact that the top of these maneuvers will not normally be precisely centered on the downwind point of the circle. The reason for this is that almost of the loops of any round maneuver will be biased from the downwind location. Even in the square maneuvers, there is only an instant where the cross wind judge would see the true angle (actually only a near true angle) of the lines? elevation, and that is difficult to discern. I know of only a few people who have actually tried this (myself included) and to my knowledge, they have a problem with actually determining how close the tops of the maneuvers are to the 45-degree elevation, even when using a large 45-degree placard to measure the line elevation at the top of a maneuver. (There is a similar problem with seeing how close the pilot gets to the "38-degree" elevation of the start and the horizontal intersection of the four leaf clover.) The crosswind judge is not in a position to properly assess ANY portion of the overhead eight.
So if there is a crosswind judge, should he score every maneuver, even though he is not in any kind of an optimum position to see the shape of any maneuver and really is not in a position to accurately determine how well the 45-degree elevations are flown? If he were to mark only on elevations, how would his mark or score be factored into the overall total score for the flight? Having a crosswind judge would not improve the accuracy of how a pattern is judged.
Maybe I am missing something here, but I do not think any judge could see or assess the bottoms any better on the downwind side as from the upwind side. And I do not think any judge could see or assess the intersections as well from the downwind side as from the upwind side, particularly the intersections of the vertical eights and the horizontal intersection of the four leaf clover. A judge from the downwind side cannot possibly see the overall shape and size of the maneuvers as well as a judge from the upwind side of the circle. Having a downwind judge would not improve the accuracy of how a pattern is judged.
An experienced judge, or a properly trained judge, can be fairly accurate in determining the size of a maneuver that is flown within the 45-degree elevations that define most of the maneuvers of the pattern even if the maneuvers are skewed or biased from the dead downwind direction. The best location to do this is from the upwind side of the circle. There is a way to do this, but to describe the method here is beyond the scope of this discussion.
Relative to the comment about guaranteeing judge isolation: Judges do not need to be isolated to assure there is no inappropriate communication between them. In my experience, there is no communication between the judges regarding how any flight is being scored, even with seven judges standing side-by-side. Furthermore, when a flight is being scored, there is not time to have any kind of dialogue between judges.
Rich Peabody's comments in his post #21 above are appropriate. (I do agree with Rich on occassion.) I could add that if another judge is recruited to view the pattern from the crosswind location, his or her effort would be best utilized by being placed on the upwind side of the circle with the other judge or judges, and use the additional score to average with the others.
And Rich is entirely correct that the pilots who fly the best shapes and sizes will still normally come out on top, regardless where the judges are located, so why should the judges be located at any location other than where they can best view the entire pattern.
I know that Bob Baron proposed a method that would use separate judges for intersections, heights and shapes. He wrote an article on this in the July 1982 issue of Flying Models. Each of these three judges were to be placed "to best see his portion of the competitive pattern". Each judge scored each maneuver from 0 to 10, then the scores were combined using different K factors for each maneuver. It is a comparatively complex system and according to the article had been used during a contest in 1979. I do not know if there was any further development of this idea. It does give something for those who are interested to explore further.