Skip to main content

Mitch Butler

Corryong Cup 2017 · Task 3 (Floater) (Thu, 12 Jan 2017) · floater · ranked #1 · times in Australia/Melbourne (GMT+11)

Officially: 1st · 349 pts (AirScore)

Scores computed · FAI S7F 2026

Made goal in 40:36 — 240.8 points

Top of the class, but not a full sweep: of the 254.4 points on offer, 13.6 went untaken — all of it leading-points.

Loading map...

The flight

What the tracklog shows, and which crossings scored.

How this works

Completed the task — full task distance is credited.

Day quality — points on offer

Task validity 25.44% of a perfect day, so 254.4 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%

7 pilots flew out of 7 present. Nominal launch is 96%, so launch validity is full once 7 pilots are in the air.

Distance validity — the day counts for less if the field as a whole did not get far.28.89%

Measured against a 35.0 km nominal distance, a 30% nominal goal and a 5.0 km minimum distance. The field flew 5.6 km past the minimum on average, with a best of 18.7 km.

How far the field got — the spread distance validity is computed from, one dot per pilot. 7 pilots flew; you flew 18.7 km, further than 6 of them. The day averaged 5.6 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.88.05%

The fastest pilot took 40:36 against a nominal task time of 1:00:00 — 67.7% of nominal.

Points on offer for the day254.4 pts

1000 × 1.00 × 0.2889 × 0.8805 = 254.4

Split between the components: 1 of 7 pilots made goal — a goal ratio of 0.14

distance 176.9 · time 54.2 · leading 13.6 · arrival 9.7

The share each component takes of the day

distance 69.5% · time 21.3% · leading 5.3% · arrival 3.8%

Leading weight follows the FAI S7F 2026 §11 formula: 18% of the non-distance weight (the task's Leading Time Ratio) goes to leading.

Distance points

176.9 of 176.9 pts

Full distance — the only pilot in goal

How this works

Task distance18.7 km

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

Scored distance18.7 km

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

Best distance in class18.7 km
Made goal — full available distance points.176.9 pts
The curve is the distance-points formula, half of it built from where the field landed out (FAI S7F §12.1.1) — 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 18.7 km of the class best 18.7 km, worth 176.9 of 176.9.

Time points

54.2 of 54.2 pts

How this works

Your speed section time40:36
Fastest time in class40:36
Fastest through the speed section — full available time points.54.2 pts

Leading points

0 of 13.6 pts

2nd best of 6 measured leading coefficients

How this works

Leading points reward flying out front during the speed section — the pilot with the best leading coefficient takes all available leading points, others fall off with the gap.0 pts
Your leading coefficient — the area under your distance-over-time curve, so lower means further ahead for longer1.719

Best in class 0.392.

Leading points fall off with the gap to the best coefficient0 pts

leading factor = max(0, 1 − ((LC − LCbest)² ÷ LCbest)^1⁄3) = 0.000; × 13.6 available = 0

Measured with the squared-distance leading coefficient (S7F §12.3.1, the hang-gliding variant).
The curve is the leading-points formula — every dot is a pilot, sitting exactly on it. Your coefficient of 1.719 against the class best of 0.392 puts you at 0 of 13.6.

Arrival points

9.7 of 9.7 pts

How this works

Arrival points reward crossing the end of the speed section early relative to the other pilots who reached it.9.7 pts
Reached the end of the speed section 1st of 114:58:17

The arrival order is by the clock at the end of the speed section, not by speed — an earlier start gate can put a slower pilot ahead of a faster one here.

Arrival points fall off steeply with each rank9.7 pts

arrival ratio = 1 − (1 − 1) ÷ 1 = 1.00; arrival factor = 0.2 + 0.037·r + 0.13·r² + 0.633·r³ = 1.000; × 9.7 available = 9.7

First to the end of the speed section — the full available arrival points.

Total

240.8 of 254.4 pts

How this works

Distance + time + leading + arrival, minus penalties240.8 pts

round(176.9 + 54.2 + 9.7, 1 dp) = 240.8

The points left on the day

Nobody out-scored you — so this compares your 240.8 against the 254.4 the day offered.

How this works

Distancefull points

you 176.9 of 176.9 on offer

Timefull points

you 54.2 of 54.2 on offer

Leading−13.6 pts

you 0 of 13.6 on offer — Jay Kubeil took the full leading-points

Arrivalfull points

you 9.7 of 9.7 on offer

Left on the day−13.6 pts

All of it is leading-points.