Abstract
A spherical wind vane is one of the conceivable two-directional wind direction measuring configurations due to its complete symmetry, and a linearized equation of motion is formed. The form is quite similar to that of the ordinary wind vane, of which some discussions and a wind tunnel test are given, too. The spherical wind vane is tested in the wind tunnel concerning its drag coefficient, and oscillation behaviour. The latter is compared with that of the ordinary wind vane, and found to possess peculiar and discouraging characteristics.
