[NSRCA-discussion] FAI Judging clarification.

[Patrick Harris]

Jon,

We had a contest this past weekend and I just went over this in the morning
meeting. It worked fine.

Pat Harris
D8 DVP


On Wed, May 28, 2014 at 10:22 AM, Jon Carter <jon.x.carter at oracle.com>wrote:

> Hey guys – Given that contest season is heating up all across the country
> and the Nats are rapidly approaching the Judging Committee thought that we
> should share this coming months “From the Judges Chair” article ahead of
> time and get it as widespread as possible. Thus, this mailing, the website
> and the upcoming K-Factor!
>
>
>
> From The Judges Chair
>
> Submitted by the Judging Committee
>
>
>
> For this month’s column we have a few important clarifications to make for
> certain FAI maneuvers. We learned of these issues from the F3A
> Sub-committee chairman at the AOC F3A Competition in Thailand. We then did
> some research with our compatriots in Europe and the rest of the world. We
> decided it was very important to align ourselves with the rest of the FAI
> community in the world and to get this information out as quickly as
> possible so that all of our pilots and judges could digest this before our
> Nationals and Team Selection event in July.
>
>
>
> First, for the FAI Golf Ball maneuver (P15 and F15) we have stated that
> the rolls on the 45° up/down lines must be centered on the line segments
> AND centered on the center pole. After carefully looking at the geometry
> and drawing a lot of pictures we realize we were mistaken! The rolls
> *MUST* be centered on the line segments that they are contained in, this
> might or might not mean that the rolls will be centered on the center pole.
> In several “normal” loop size drawings that we have made, they are not
> centered on the center pole, they are offset slightly. Depending on the
> radius of the loop segments the rolls can properly occur before, at or
> after the intersection of the two line segments. As judges we must simply
> verify that the roll element is in the center of the line segment that
> contains it. Of course the apex of the ¾ loop segment must be over the
> center pole for proper centering of the maneuver.
>
>
>
> The second clarification concerns the Double Immelman maneuver that is in
> both the P15 and the F15 sequences. Under AMA rules a Double Immelman
> maneuver is defined as a square with half loop segments on each end and
> that is the way we have been writing about and recommending judging these
> maneuvers in FAI. The FAI maneuver however is defined differently; it has
> no express relationship between the horizontal line segments and the half
> loop diameter. Thus, this maneuver can be wider than it is tall or taller
> than it is wide with no geometry downgrade. Bear in mind though that other
> downgrades we have mentioned are still applicable, rolls must begin
> immediately after loop segments, loops must be round with no flat spots,
> etc…
>
>
>
> The third clarification is closely related to the second. This concerns
> the center Top Hat maneuver in P15. In AMA rules a center Top Hat is
> defined as 3 legs of a square. That is the vertical legs must be equal to
> the horizontal leg. Again, the FAI rules do not state this. Therefore, in
> FAI, a center Top Hat shall have both vertical legs the same length but
> there is no required relationship to the horizontal leg. I.e. it can be
> wide and short or tall and skinny with no geometry downgrade as long as the
> vertical legs are the same length.
>
>
>
> We hope that this clarifies the proper judging of these maneuvers for you.
> Please remember, these clarifications are for FAI only! The AMA rules
> require that a center Top Hat be 3 sides of a square and a Double Immelman
> be a square with half loop segments on each end when flown in an AMA
> pattern class.
>
>
>
> Thanks,
>
>
>
>
>
> Jonathan L. Carter
>
> NSRCA Judging Committee Chairman
>
>
>
> Derek Koopowitz & Andre Bouchard
>
> NSRCA Judging Committee members
>
>
>
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>
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