Introduction - Pipistrel
Introduction - Pipistrel
Introduction - Pipistrel
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www.pipistrel.si<br />
VIRUS SW 41<br />
Performance<br />
REV. 0<br />
Effect of elevation<br />
The table below provides data about the effect of elevation on takeoff runway length.<br />
elevation (m) 0 500 1000 1500<br />
atmosph. pressure (hPa) 1012 954 898 845<br />
outside temperature (°C) 15,0 11,7 8,5 5,2<br />
Takeoff runway length [m (ft)]<br />
SW 80 140 (460) 175 (574) 215 (705) 250 (820)<br />
SW 100 95 (310) 119 (390) 146 (475) 170 (565)<br />
WARNING: If the outside temperature is higher than the standard value it is mandatory to<br />
consider the takeoff runway length prolongs as follows: L = 1,10 • (L h<br />
+ L t<br />
- L 0<br />
).<br />
Abbreviations are as follows:<br />
L h<br />
= takeoff runway length at present elevation,<br />
L t<br />
= takeoff runway length at sea level at same atmospheric conditions,<br />
L 0<br />
= takeoff runway length at 15°C.<br />
The graph below indicates how takeoff runway length changes as altitude increases.<br />
250 820<br />
takeoff runway length<br />
200 650<br />
150 500<br />
100 330<br />
50 160<br />
SW 80 HP<br />
SW 100 HP<br />
m<br />
ft<br />
0 200 400 600 800 1000 1200 1400<br />
650 1300 2000 2600 3200 4000 4600<br />
elevation (m)<br />
elevation (ft)<br />
Effect of the wind<br />
Wind (head, cross or downwind - also called tailwind) affects aircraft’s ground speed (GS).<br />
Headwind on takeoff and landing causes the Takeoff and Landing runway length to shorten as the<br />
GS is smaller during these two flight stages. The opposite stands for tailwind on takeoff and landing<br />
as tailwind prolongs Takeoff and Landing runway length significantly.<br />
The data on the next page was obtained through testing and therefore serve as informative values<br />
only.
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