I have a wind speed and wind direction of an aircraft. I need to find wind component along the true North axis and East axis.

Can anyone explain me how to do that?

Say wind speed is the hypotenuse in the Right angled triangle and angle is wind direction. How to find wind speed along north axis and east axis?


closed as off-topic by mins, fooot, Pondlife, Simon, SMS von der Tann Apr 3 '17 at 19:52

  • This question does not appear to be about aviation, within the scope defined in the help center.
If this question can be reworded to fit the rules in the help center, please edit the question.


Simply use trigonometric functions:

$V_{north} = -V \cos \theta $

$V_{east} = -V \sin \theta $

$V$ is wind speed

$\theta$ is wind direction clockwise relative to the true north (e.g. east is 90°). Note that wind direction is typically given as the direction from which the wind is blowing. If you have a wind direction that in given into the direction of air flow, then you should remove the minus signs from the formula's above.

enter image description here

  • $\begingroup$ @DeltaLima Does this hold true for all values of θ (0 - 360) ? $\endgroup$ – geetha Apr 5 '17 at 3:25
  • $\begingroup$ @geetha yes it does. If you implement this in a computer don't forget that you have to convert the angle from degree to radians before using the trigonometric functions $\endgroup$ – DeltaLima Apr 5 '17 at 6:16

Not the answer you're looking for? Browse other questions tagged or ask your own question.