Steven Crosby

Corryong Cup 2024 · Task 1 (Open) (Tue, 9 Jan 2024) · open · ranked #9 · times in Australia/Melbourne (GMT+11)

Scores computed

Made goal in 58:52 — 298.4 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.

Crossed the start cylinder boundary 9 times. The scored start is the latest crossing from which the flight still makes its best run along the course — re-starting supersedes an earlier start, while simply flying back through the cylinder later in the task changes nothing.

The 14:55:52 crossing is the scored start. By the 15:01:01 crossing the flight had already reached TP3 (TOWONG), so treating that as a re-start would mean flying the course again from there — a shorter, later run that scores less.

Completed the task — full task distance is credited.

Day quality — points on offer

Task validity 42.565% of a perfect day, so 425.7 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.99.986%

44 pilots flew out of 46 present. Nominal launch is 96%, so launch validity is full once 45 pilots are in the air.

Distance validity — the day counts for less if the field as a whole did not get far.75.25%

Measured against a 35.0 km nominal distance, a 30% nominal goal and a 5.0 km minimum distance. The field flew 14.7 km past the minimum on average, with a best of 30.0 km.

How far the field got — the spread distance validity is computed from, one dot per pilot. 44 pilots flew; you flew 30.0 km, further than 28 of them. The day averaged 14.7 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.56.573%

The fastest pilot took 34:40 against a nominal task time of 1:30:00 — 38.5% of nominal.

Points on offer for the day425.7 pts

1000 × 0.99986 × 0.7525 × 0.56573 = 425.7

Split between the components: 16 of 44 pilots made goal — a goal ratio of 0.36

distance 209.8 · time 215.9

The share each component takes of the day

distance 49.3% · time 50.7%

Distance points

209.8 of 209.8 pts

Full distance — one of 16 pilots in goal

How this works

Task distance30.0 km

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

Scored distance30.0 km

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

Best distance in class30.0 km

Made goal — full available distance points.209.8 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 30.0 km of the class best 30.0 km, worth 209.8 of 209.8.

Time points

88.6 of 215.9 pts

9th fastest of 16 through the speed section

How this works

Time points use the 5⁄6 speed-fraction exponent (the current FAI S7F, S7F §11.2).

Your speed section time58:52

Fastest time in class34:40

Set by Trent Brown — you were 24:11 behind.

Time points fall off with the gap to the fastest time88.6 pts

speed fraction = max(0, 1 − ((T − Tbest) ÷ √Tbest)^5⁄6) = 0.4106; × 215.9 available = 88.6 (times in hours)

The curve is the time-points formula — every dot is a pilot, sitting exactly on it. You were 24:11 behind the fastest time, which cost 127.3 of the 215.9 time points on offer.

Total

298.4 of 425.7 pts

How this works

Distance + time + leading + arrival, minus penalties298.4 pts

round(209.8 + 88.6, 1 dp) = 298.4

Where the points went

Your 298.4 against the 425.7 that won the class.

How this works

Distancelevel

you 209.8, the leader 209.8

Time−127.3 pts

you 88.6, the leader 215.9

Behind Trent Brown−127.3 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