The Matrix System
By Dave Guerin

Links to Samples

Sample Flight Order

Sample Flight Matrix

Purpose:
The Matrix system is intended for use in situations where the number of pilots exceeds that which can be run on 1 site, in front of 1 set of judges, and within the time limitations of the event. The Masters and F3A groups at the NATS fall into this category.

It is our goal to achieve equal exposure, pilot to pilot, while using 2 sites and 4 flight lines.

The Matrix
The key to creating a successful rotating Matrix is the number of frequency groups.

Frequency groups
The pilots are grouped by frequency. The number of frequency groups must be equal to or multiples of the number of flight lines. The number of flight lines at the NATS is 4. The number of frequency groups can be 4, 8, or 16 depending on how many frequencies we have to work with.

Matrix Construction

Flight groups
In the sample shown the contestants are divided into 8 frequency groups (A- H). There may be more than 1 frequency in each group, but a frequency cannot appear in more than 1 group.

Try to keep the number of pilots in each group as even as possible. This sample makes it clear that the more frequencies we are able to use in making the groups the better the mix will be.

Divide the frequency groups into 4 flight groups for each day. Day #1 (A, B) (C, D) (E, F) (G, H) Day #2 (A, C) (E, G) (B, D) (F, H) Day #3 (A, B) (F, H) (C, D) (E, G)

On day #1 Groups A, B, C, D fly on Site #1 and Groups E, F, G, H fly on Site #3 On day #2 Groups A, C, E, G fly on Site #1 and Groups B, D, F, H fly on Site #3 On day #3 Groups A, B, F, H fly on Site #1 and Groups C, D, E, G fly on Site #3

Flight Orders
Flight orders are created from the flight groups. Frequencies are arranged to avoid flight line delays and pilots are rotated to avoid having the same pilot fly first more than once.

Sample flight operations for Day 1 on Site #1:
Each site has 2 flight lines (A and B)

Group (A, B) starts flying Round #1 on Line (A) Site #1
Group (C, D) starts flying Round #2 on Line (B) Site #1

When they complete their round and the judges have a break, Group (A, B) moves to Line (B) and Group (C, D) moves to Line (A).The flight orders are rotated so that the same pilot is not first more than once. When flying resumes Group (C, D) will complete Round #1 and Group (A, B) will complete Round #2. The result is group A, B, C, D have all flown round #1 and round #2 in front of the same set of judges.

Scoring:
AMA's current policy of scheduling no rain day forces us to be in a position to declare a winner at any stage of the event should competition be terminated for any reason.

Procedure:
Site #1 and #3 are flying simultaneously. When round #1 and #2 are complete, the scores for each round at each site are normalized.

After the scores are normalized, the scores from round #1 on Site #1 are merged with the scores from round #1 at Site #3 to give a final standing for round #1. The same procedure is used for all preliminary rounds.

If the competition is terminated before all rounds are completed, this procedure produces the appropriate comparison of all scores, after each round, so that contestant placing can be determined.

The Matrix for 2006
Using what we learned from the 2005 Nats, talking with contestants and in reviewing the Pilot's Survey we have improved the Matrix for 2006. I explained the impact of frequency choices at the Masters Pilot's meeting and I was very encouraged by the contestants' understanding and willingness to cooperate with alternate frequencies in the future. I look forward to having much more to work with in 2006.

We will use 8 or 16 frequency groups in 2006 depending on available frequencies. If possible, there will be no more than 3 contestants on the same frequency. Remember that the method of scoring is an important part of making the system work correctly.

It is my conclusion that this new system is fair to all contestants, and it also provides us with the ability to declare a winner if, for any reason, the event cannot be completed.

Links to Samples

Sample Flight Order

Sample Flight Matrix