Zac O'Brien

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

Scores computed

Manual flight — 11.2 km made good — 140.9 points

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

The flight

A manual flight report — no tracklog.

Manual flight — recorded by an official for a pilot with no tracklog (FAI S7F §8.4). The distance is computed from the last turnpoint reached and the landing point, exactly as a real track at the same place would score.

Last turnpoint reached: TP2 — TOWONG

Day quality — points on offer

Task validity 25.49% of a perfect day, so 254.9 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.28.95%

Measured against a 35.0 km nominal distance, a 10% nominal goal and a 5.0 km minimum distance. The field flew 4.8 km past the minimum on average, with a best of 16.7 km.

How far the field got — the spread distance validity is computed from, one dot per pilot. 7 pilots flew; you flew 11.2 km, further than 4 of them. The day averaged 4.8 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 day254.9 pts

1000 × 1.00 × 0.2895 × 0.8805 = 254.9

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

distance 177.2 · time 54.3 · 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%

Distance points

140.9 of 177.2 pts

3rd furthest of 7

How this works

Task distance16.7 km

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

Scored distance11.2 km

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

Best distance in class16.7 km

Linear half — half the available points scale with your share of the best distance59.4 pts

0.5 × (11.2 km ÷ 16.7 km) × 177.2 = 59.4

Difficulty half — rewards flying past stretches where many pilots landed81.4 pts

The difficulty curve is built from where the whole field landed out (FAI S7F §11.1.1).

Time points

0 of 54.3 pts

How this works

Time points are only awarded to pilots who reach the end of the speed section.

Leading points

0 of 13.6 pts

How this works

Leading points reward flying out front during the speed section. A manual flight has no tracklog to measure leading from, so it earns none.0 pts

Arrival points

0 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.0 pts

1 pilot reached the end of the speed section on this task; the points scale with where in that group you crossed it (FAI S7F §11.4).

Total

140.9 of 254.9 pts

How this works

Distance + time + leading + arrival, minus penalties140.9 pts

round(140.9 + 0.0, 1 dp) = 140.9

Where the points went

Your 140.9 against the 241.3 that won the class.

How this works

Distance−36.3 pts

you 140.9, the leader 177.2

Time−54.3 pts

you 0, the leader 54.3

Leadinglevel

you 0, the leader 0

Arrival−9.7 pts

you 0, the leader 9.7

Penalties−0.1 pts

you 0, the leader 0.1

Behind Mitch Butler−100.4 pts

Spread across time-points, distance-points, arrival-points and penalties — time-points the largest, at 54.3.

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

Leading points

Arrival points

Total

Where the points went

Terms on this page