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#11
July 18th 13, 01:13 AM
posted to rec.aviation.soaring
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Anybody running a Butterfly Vario with XCSoar?
On Wednesday, July 17, 2013 5:56:21 AM UTC-4, Max Kellermann wrote:
On Wednesday, July 17, 2013 2:28:21 AM UTC+2, son_of_flubber wrote: Does anyone know if XCSoar correctly interprets the wind direction information that it gets from a V7? This question cannot be answered, because the V7 does not send a wind estimate over the wire. Right, the issue never comes up. The V7 calculates a wind vector for it's internal "get home" function, but it sends airspeed "over the wire" to XCSoar. XCSoar combines the V7 supplied airspeed with the GPS supplied ground speed and direction to calculate a wind vector. XCSoar can calculate wind based on GPS position (alone) over time but the V7 supplied airspeed makes the wind calculation more accurate and robust. Did I get that right? 
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