These movements may exceed 3000 ft/m and most light aircraft are unable to climb out of a downdraught this strong. Move out of the down flowing air and try to locate the up flowing air, usually up- or downwind.
Draught. The vertical distance from the loaded waterline to the lowest point of the hull of a flying-boat or the floats of a float seaplane.
Updraught, downdraught or vertical gust shear is the change in vertical air motion with horizontal distance.
A man flying a kite on the beach, a good location for flying as winds travelling across the sea contain few up or down draughts which cause kites to fly erratically.
 See also: Speed, Flight, Aircraft, Direct, Pilot
  
|
RSS
