Hi Guys
Can anyone comment on how accurate the following estimation orf wind speed will be.
1). Fly drone to altitude required.
2). Switch to Atti mode, and watch the direction ( course ) of wind drift that occurs
3). Once the "course" has been established switch back into P-mode.
4). Flyback back along the established course to a distance say 100 feet behind your position.
5). Ensure than you stand beneath the "course" on a path that ensures the bird passes directly overhead
6). Switch back to Atti mode, and when the quad passes directly overhead start a stop watch running.
7). Allow the bird to move to a position downwind say 200 feet, ( use Go app to measure the distance)
8). When you are exactly the distance away ( eg 200 feet) that you wanted to use stop the watch.
Now carry out the folowing calculation where D = distance eg 200 feet & T = time taken eg 12 seconds
((D/T)*3600)/5280 = ((200/12)*3600)/5280 = 11.36 MPH i.e. the average wind speed
Now I know there would be some inaccuracies involved, Ie when you start the timer as the bird passes overhead, and also some vectoring will occur due to slight changes in altitude and direction, and some gusting or wind shear might be encountered, but how accurate do you think the method would be..? How could you improve on the technique.
Waylander
Can anyone comment on how accurate the following estimation orf wind speed will be.
1). Fly drone to altitude required.
2). Switch to Atti mode, and watch the direction ( course ) of wind drift that occurs
3). Once the "course" has been established switch back into P-mode.
4). Flyback back along the established course to a distance say 100 feet behind your position.
5). Ensure than you stand beneath the "course" on a path that ensures the bird passes directly overhead
6). Switch back to Atti mode, and when the quad passes directly overhead start a stop watch running.
7). Allow the bird to move to a position downwind say 200 feet, ( use Go app to measure the distance)
8). When you are exactly the distance away ( eg 200 feet) that you wanted to use stop the watch.
Now carry out the folowing calculation where D = distance eg 200 feet & T = time taken eg 12 seconds
((D/T)*3600)/5280 = ((200/12)*3600)/5280 = 11.36 MPH i.e. the average wind speed
Now I know there would be some inaccuracies involved, Ie when you start the timer as the bird passes overhead, and also some vectoring will occur due to slight changes in altitude and direction, and some gusting or wind shear might be encountered, but how accurate do you think the method would be..? How could you improve on the technique.
Waylander