Abstract: Wind information for use at airports can be called representative if it provides an optimal estimate of wind variations to be expected over the runway. It is shown that a single anemometer at a nonideal but reasonable ...

Abstract: Wind vane motion constants (damping ratio, natural wavelength and decay distance) are derived in a way which can accomodate both mechanical friction and the presence of a propeller. The motion is shown to be insufficiently ...

Abstract: Double-fin vanes which have their fins at angles >10° with the vane axis may refuse to point into the wind, having instead two symmetric equilibrium positions at angles up to 16° with respect to the wind direction. The ...