Mitch Butler

Corryong Cup 2021 · Task 1 (Open) (Sun, 10 Jan 2021) · open · ranked #9 · times in Australia/Melbourne (GMT+11)

Scores computed

Made goal in 1:42:13 — 684 points

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Click any highlighted step in the explanation to see where it happened.

The flight

What the tracklog shows, and which crossings scored.

Start time taken: gate 4 of 9 — the last start gate at or before the crossing. The speed-section clock runs from the gate, not from the crossing (FAI S7F §8.3.1).15:15:00

Completed the task — full task distance is credited.

Day quality — points on offer

Task validity 96.96% of a perfect day, so 969.6 of 1000 points were available.

How this works

Launch validity — the day counts for less if much of the field never got into the air.100%

32 pilots flew out of 32 present. Nominal launch is 96%, so launch validity is full once 31 pilots are in the air.

Distance validity — the day counts for less if the field as a whole did not get far.100%

Measured against a 35.0 km nominal distance, a 30% nominal goal and a 5.0 km minimum distance. The field flew 26.5 km past the minimum on average, with a best of 51.2 km.

How far the field got — the spread distance validity is computed from, one dot per pilot. 32 pilots flew; you flew 51.2 km, further than 17 of them. The day averaged 26.5 km past the 5.0 km minimum, against a 35.0 km nominal distance.

Time validity — the day counts for less if the fastest pilot got round much quicker than the task was meant to take.96.96%

The fastest pilot took 1:16:39 against a nominal task time of 1:30:00 — 85.2% of nominal.

Points on offer for the day969.6 pts

1000 × 1.00 × 1.00 × 0.9696 = 969.6

Split between the components: 15 of 32 pilots made goal — a goal ratio of 0.47

distance 422.2 · time 547.4

The share each component takes of the day

distance 43.5% · time 56.5%

Distance points

422.2 of 422.2 pts

Full distance — one of 15 pilots in goal

How this works

Task distance51.2 km

The optimized task line — the shortest legal way round the turnpoints.

Scored distance51.2 km

Measured along the optimized task line, up to the furthest point on course.

Best distance in class51.2 km

Made goal — full available distance points.422.2 pts

The curve is the distance-points formula, half of it built from where the field landed out (FAI S7F §11.1.1) — every dot is a pilot, sitting exactly on it. Its steepest stretches are the ones fewest pilots got past, so flying through one is worth more than the same distance somewhere easy. You flew 51.2 km of the class best 51.2 km, worth 422.2 of 422.2.

Time points

261.8 of 547.4 pts

9th fastest of 15 through the speed section

How this works

Time points use the 2⁄3 speed-fraction exponent (the older GAP2016/2018 curve, S7F §11.2).

Your speed section time1:42:13

Timed from your 15:15:00 start gate to the end of the speed section (FAI S7F §8.7) — you crossed the start at 15:26:46.

Fastest time in class (among pilots who made goal)1:16:39

Set by Todd Wisewould — you were 25:33 behind.

Time points fall off with the gap to the fastest time261.8 pts

speed fraction = max(0, 1 − ((T − Tbest) ÷ √Tbest)^2⁄3) = 0.4782; × 547.4 available = 261.8 (times in hours)

The curve is the time-points formula — every dot is a pilot, sitting exactly on it. You were 25:33 behind the fastest time, which cost 285.6 of the 547.4 time points on offer.

Total

684 of 969.6 pts

How this works

Distance + time + leading + arrival, minus penalties684 pts

round(422.2 + 261.8, 1 dp) = 684

Where the points went

Your 684 against the 969.6 that won the class.

How this works

Distancelevel

you 422.2, the leader 422.2

Time−285.6 pts

you 261.8, the leader 547.4

Behind Todd Wisewould−285.6 pts

All of the gap is time-points.

Start cylinder (SSS): The circle around the start turnpoint. The race clock begins when you cross it in the required direction, or at the start gate you took.
Speed section: The timed part of the task: from the start to the end of the speed section. Time points are earned here, and only here.
End of speed section (ESS): Where the clock stops — usually a cylinder shortly before goal, so pilots are not racing all the way to the ground.
Optimized task line: The shortest legal way around the turnpoints, clipping each cylinder rather than flying to its centre. Every distance on this page is measured along it.
Made good: How far along that line you got — not how far you flew. Wandering off course adds kilometres to your track but none to your distance made good.
Minimum distance: A floor: a pilot who flies less than this is scored as if they flew it, so a short flight is never worth less than nothing.
Nominal distance / time / goal / launch: What the organiser expected of a good day — a typical task length, duration, share of pilots in goal, and share of pilots launching. They are the yardsticks the day is measured against, not targets anyone must hit.
Validity: How much of a full 1000-point day this task was worth. A day where few launched, nobody got far, or the winner was round very quickly counts for less in the overall standings.
Goal ratio: The share of flying pilots who made goal. It decides how the day's points are split between distance and the other components.
Leading coefficient: A measure of how much of the race you spent out in front, as an area under your distance-over-time curve. Lower is better; the absolute number means nothing on its own, only the comparison does.
Distance difficulty: Hang gliding only: half the distance points are weighted by where the field landed out, so getting past a stretch that stopped many pilots is worth more than easy kilometres.
Jump the gun: Starting before the first start gate opened. Paraglider pilots are scored only to the start cylinder; hang glider pilots take a penalty that grows with how early they were.

The full guide to GAP scoring

The flight

Day quality — points on offer

Distance points

Time points

Total

Where the points went

Terms on this page