On Friday 17 July 2009 16:20:33 Michael Payne wrote: > Russia, the "Stans", Mongolia and China use km/h for aircraft speed and > m/s for wind speed. I actually find it easier to imagine wind speed in m/s, > you can picture something blowing by.
Me too, but it adds an extra calculation step when the two speeds are in different units. The reason I suggested multiples of 9 km/h is that they're easier to convert to m/s in your head. Pierre
