h3. Proposal from

Barney Townsend - GBR

h3. Proposal title

SLALOM SCORING

h3. Existing text

S10 A4 3.C6

PRECISION CIRCUIT IN THE SHORTEST TIME (‘Clover leaf slalom’)

Scoring

tpen: = t_pil + m * v_pen

Q: = LOG(3 * t_best / (t_pen -- t_best + 3))

Where

tpil = the measured pilots time (seconds)

m = the number of missed targets

vpen = the time penalty for each missed target (seconds)

tpen = the pilots time (after penalties for missed targets)

tbest = the best time (after penalties for missed targets)

Q = the task value before normalization

Note: Spreadsheet formulas:

tpen: = \_t_pil + m * v_pen_

Q: = LOG(3 * t_best / (t_pen -- t_best \+3))

And same in S10 A4 3.C7, S10 A4 3.C8, S10 A4 3.C10, S10 A4 3.C11

h3. New text

{panel}

S10 A4 3.C6

PRECISION CIRCUIT IN THE SHORTEST TIME (‘Clover leaf slalom’)

Scoring

tpen: = t_pil + m * v_pen

Q: = LOG(3 * t_best / (t_pen -- t_best \+ -3- {color:#ff0000}10{color}))

Where

tpil = the measured pilots time (seconds)

m = the number of missed targets

vpen = the time penalty for each missed target (seconds)

tpen = the pilots time (after penalties for missed targets)

tbest = the best time (after penalties for missed targets)

Q = the task value before normalization

Note: Spreadsheet formulas:

tpen: = \_t_pil + m * v_pen_

Q: = LOG(3 * t_best / (t_pen -- t_best \+ -3- {color:#ff0000}10{color}))

And same in S10 A4 3.C7, S10 A4 3.C8, S10 A4 3.C10, S10 A4 3.C11

{panel}

h3. Reason

Section 10, 4.29.3 states that

"Tasks shall, as far as practicable, conform to the following guidelines in standard championships:

For Paramotor aircraft classes PF and PL:

A) Navigation: 33% of the total value of the tasks flown.

B) Economy: 33% of the total value of the tasks flown.

C) Precision: 33% of the total value of the tasks flown."

This rule is correctly in place to ensure complete fairness to all pilots.

The current scoring formula for slalom tasks is too complicated and too punitive to all but the top couple of pilots, giving them an unfair advantage in the overall competition rankings. This could be argued to be in direct contravention of the spirit of rule 4.29.3.

The UK accept the argument that there should be an incentive for pilots to push for the fastest slalom times, but we propose that the current formula gives too significant a bonus to top slalom pilots, particularly now that there are separate FAI Category 1 championships specifically for Slalom. We therefore propose to a small modification to the formula to make it fairer to all pilots whilst retaining the desired spectator friendly bonus.

By way of example, the following graph shows the pilot times and scores from “the 8” task at the World Paramotor Championship 2012, directly compared against what the pilots would have scored if the proposed formula was used. It can be clearly seen that the new formula removes the unfair advantage that the top slalom pilots have, whilst still giving them a small bonus for being at the top. Effectively, the bonus is approximately halved.\\ !slalom.png|border=1!

Barney Townsend - GBR

h3. Proposal title

SLALOM SCORING

h3. Existing text

S10 A4 3.C6

PRECISION CIRCUIT IN THE SHORTEST TIME (‘Clover leaf slalom’)

Scoring

tpen: = t_pil + m * v_pen

Q: = LOG(3 * t_best / (t_pen -- t_best + 3))

Where

tpil = the measured pilots time (seconds)

m = the number of missed targets

vpen = the time penalty for each missed target (seconds)

tpen = the pilots time (after penalties for missed targets)

tbest = the best time (after penalties for missed targets)

Q = the task value before normalization

Note: Spreadsheet formulas:

tpen: = \_t_pil + m * v_pen_

Q: = LOG(3 * t_best / (t_pen -- t_best \+3))

And same in S10 A4 3.C7, S10 A4 3.C8, S10 A4 3.C10, S10 A4 3.C11

h3. New text

{panel}

S10 A4 3.C6

PRECISION CIRCUIT IN THE SHORTEST TIME (‘Clover leaf slalom’)

Scoring

tpen: = t_pil + m * v_pen

Q: = LOG(3 * t_best / (t_pen -- t_best \+ -3- {color:#ff0000}10{color}))

Where

tpil = the measured pilots time (seconds)

m = the number of missed targets

vpen = the time penalty for each missed target (seconds)

tpen = the pilots time (after penalties for missed targets)

tbest = the best time (after penalties for missed targets)

Q = the task value before normalization

Note: Spreadsheet formulas:

tpen: = \_t_pil + m * v_pen_

Q: = LOG(3 * t_best / (t_pen -- t_best \+ -3- {color:#ff0000}10{color}))

And same in S10 A4 3.C7, S10 A4 3.C8, S10 A4 3.C10, S10 A4 3.C11

{panel}

h3. Reason

Section 10, 4.29.3 states that

"Tasks shall, as far as practicable, conform to the following guidelines in standard championships:

For Paramotor aircraft classes PF and PL:

A) Navigation: 33% of the total value of the tasks flown.

B) Economy: 33% of the total value of the tasks flown.

C) Precision: 33% of the total value of the tasks flown."

This rule is correctly in place to ensure complete fairness to all pilots.

The current scoring formula for slalom tasks is too complicated and too punitive to all but the top couple of pilots, giving them an unfair advantage in the overall competition rankings. This could be argued to be in direct contravention of the spirit of rule 4.29.3.

The UK accept the argument that there should be an incentive for pilots to push for the fastest slalom times, but we propose that the current formula gives too significant a bonus to top slalom pilots, particularly now that there are separate FAI Category 1 championships specifically for Slalom. We therefore propose to a small modification to the formula to make it fairer to all pilots whilst retaining the desired spectator friendly bonus.

By way of example, the following graph shows the pilot times and scores from “the 8” task at the World Paramotor Championship 2012, directly compared against what the pilots would have scored if the proposed formula was used. It can be clearly seen that the new formula removes the unfair advantage that the top slalom pilots have, whilst still giving them a small bonus for being at the top. Effectively, the bonus is approximately halved.\\ !slalom.png|border=1!