Introduction - Pipistrel

42 VIRUS SW www.pipistrel.si
Performance
REV. 0
Headwind shortens Takeoff and Landing runway length by 8 meters (25 feet) with every 5 km/h
(3 kts) of wind increase (e.g. provided there is a 10 km/h (6 kts) headwind on takeoff and landing, distances
will be approximately 16 meters (50 feet) shorter then ones published in the manual).
Tailwind prolongs Takeoff and Landing runway length by 18-20 meters (60-65 feet) with every 5
km/h (3kts) wind increase (e.g. provided there is a 10 km/h (6kts) tailwind on takeoff and landing, distances
will be approximately 36-40 meters (120-130 feet) longer then ones published in the manual).
WARNING! Tailwind affects takeoff and landing performance by more than twice as much as
headwind does.
The table below provides data about the effect of headwind (+) and tailwind (-) on takeoff runway
length.
windspeed (kts) -6 -4 -2 0 4 8 12
Takeoff runway length [m (ft)]
SW 80 198 (650) 174 (570) 153 (501) 140 (460) 129 (423) 121 (395) 115 (378)
SW 100 153 (500) 129 (420) 108 (355) 95 (310) 84 (275) 76 (245) 70 (230)
The graph below indicates how takeoff runway length changes when affected by wind.
m ft
250 820
200 650
takeoff runway length
150 500
100 330
50 160
m/s -4 -2 0 2 4 6 8
kts -8 -4 0 4 8 12 16
0
SW 80 HP
SW 100 HP
Effect of outside temperature
The table below provides data about the effect of outside temperature on takeoff runway length.
temperature (°C) 13 20 25 30 35
Takeoff runway length [m (ft)]
SW 80 140 (460) 169 (554) 187 (613) 204 (670) 219 (720)
SW 100 95 (310) 115 (375) 127 (415) 139 (455) 149 (485)