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#1
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SeeYou and wind
I save my flights on a Colibri and download them into SeeYou and
sometimes it shows the wind and sometimes it doesn't. I flew the ridge yesterday and made several circles in thermals and you can easily see that there was wind in those circles. My Ilec said the wind was 20kts. Can anybody tell me why SeeYou sees the wind and accurately displays it on some flights and not others? Gary Boggs www.nwskysports.com |
#2
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SeeYou and wind
Hi Gary,
SeeYou calculates the estimated wind speed and direction by using the drift while circling (thermaling). If you don't circle it can't estimate the wind. Could that be the difference in the flight logs? Paul Remde "GARY BOGGS" wrote in message ... I save my flights on a Colibri and download them into SeeYou and sometimes it shows the wind and sometimes it doesn't. I flew the ridge yesterday and made several circles in thermals and you can easily see that there was wind in those circles. My Ilec said the wind was 20kts. Can anybody tell me why SeeYou sees the wind and accurately displays it on some flights and not others? Gary Boggs www.nwskysports.com |
#3
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SeeYou and wind
According to the Winpilot website, Winpilot Pro will calculate wind
direction in straight flight; however, I tend to get very erroneous results with Winpilot for both wind speed and direction. Does anyone know how wind direction is calculated in Winpilot and SeeYou? Are there ways to fly with SeeYou or Winpilot to give the program better data to get more accurate results? How accurate are the resultant readings intended to be? |
#4
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SeeYou and wind
On 22 apr., 03:50, 33 wrote:
Does anyone know how wind direction is calculated SeeYou? *Are there ways to fly with SeeYou to give the program better data to get more accurate results? * SeeYou and SeeYou Mobile calculate the winds depending on what data is available. If you only give them raw GPS data, then the wind is calculated in circling. Don't expect great accuracy or sensitivity from this method, but it's a useful indication most of the time. Once you start feeding IAS/TAS data to SeeYou or SeeYou Mobile you will get much much better results. The wind will be calculated in straight flight by measuring the wind components in different directions. After just a few minutes of flying in one direction you will get a pretty good indication of the wind which will then be corrected on the fly as you fly in other directions. In order to feed this info to SeeYou Mobile, your flight recorder must be able to send IAS/TAS data through NMEA to the PDA. Most of the high- end varios do that. Even some modern lower-end varios do the same (such as LX 160/1600 and Borgelt, both combined with a GPS source). In order to see this information in SeeYou after the flight, data about IAS/TAS must be stored in the IGC file. SeeYou Mobile will automatically store all of the data it has received. If you have a flight that was recorded with SeeYou Mobile connected to a NMEA source that included IAS/TAS, then the wind indication in SeeYou will be very informative. That goes especially for wave flights where normally you would not get any wind indication from raw GPS data. Other flight computers may be setup to record IAS/TAS data in I-records, but that largely depends on your hardware. |
#5
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SeeYou and wind
"Andrej Kolar" wrote in message ... SeeYou and SeeYou Mobile calculate the winds depending on what data is available. If you only give them raw GPS data, then the wind is calculated in circling. Don't expect great accuracy or sensitivity from this method, but it's a useful indication most of the time. ---------------------- No doubt thye'll substitute chicken Is Peeta harassing them? mk5000 you dont need no second love baby O baby O baby come give it me love baby --That Chick, Mariah Carey |
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