Difference between revisions of "TrueWind"
(Created page with "calculate True Wind from Apparent Wind * http://davidburchnavigation.blogspot.com/2013/04/true-true-wind-from-apparent-wind.html * https://coaps.fsu.edu/woce/truewind/paper/in...") |
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| − | calculate True Wind from Apparent Wind | + | == calculate True Wind from Apparent Wind == |
| + | * AWA Apparent Wind Angle (relative to H) | ||
| + | * H Heading (relative to true north) | ||
| + | ** AWD Apparent Wind Direction (relative to true north) | ||
| + | ** <code>AWD = MOD(H+AWA;360)</code> | ||
| + | |||
| + | * AWS Apparent Wind Speed | ||
| + | * COG Course Over Ground | ||
| + | * SOG Speed Over Ground | ||
| + | * STW Speed Trough Water | ||
| + | ** TWS True Wind Speed | ||
| + | ** <code>TWSx = SOG * Sin (COG) - AWS * Sin (AWD)</code> | ||
| + | ** <code>TWSy = SOG * Cos (COG) - AWS * Cos (AWD)</code> | ||
| + | ** <code>TWS= SQRT (TWSx*TWSx + TWSy*TWSy)</code> | ||
| + | |||
| + | == see also == | ||
* http://davidburchnavigation.blogspot.com/2013/04/true-true-wind-from-apparent-wind.html | * http://davidburchnavigation.blogspot.com/2013/04/true-true-wind-from-apparent-wind.html | ||
* https://coaps.fsu.edu/woce/truewind/paper/index.html | * https://coaps.fsu.edu/woce/truewind/paper/index.html | ||
[[category:Projekte]] | [[category:Projekte]] | ||
Revision as of 14:07, 29 October 2018
calculate True Wind from Apparent Wind
- AWA Apparent Wind Angle (relative to H)
- H Heading (relative to true north)
- AWD Apparent Wind Direction (relative to true north)
AWD = MOD(H+AWA;360)
- AWS Apparent Wind Speed
- COG Course Over Ground
- SOG Speed Over Ground
- STW Speed Trough Water
- TWS True Wind Speed
TWSx = SOG * Sin (COG) - AWS * Sin (AWD)TWSy = SOG * Cos (COG) - AWS * Cos (AWD)TWS= SQRT (TWSx*TWSx + TWSy*TWSy)
