The thermals come from the archived forecast for that afternoon: their strength and number follow the
ICON-D2 surface heat flux and boundary-layer depth under each point, they are born, grow, fade and drift with the forecast wind.
Three pilots fly the same task: the motor all the way, and the wind-aware MacCready tactician at two settings.
--:--t = 0 s
Pilot
Alt m
Vario
kJ
Mode
Forecast w* on the ground, m/s
thermalclimbed in
0 s
Barogram
Altitude above the ground through the flight. The band is 120 m (the motor starts below) to 600 m (the climbs stop there). Click to jump.
This task
All 48 tasks of each day
Same pilots on 48 random 20 km routes per day, started between 11:00 and 14:30. Arrived means within the time limit (an average of 12.6 km/h).