Windsocks

A windsock is a conical textile tube, typically made of fabric, that is suspended at a height from a mast. Its primary purpose is to indicate the direction and relative strength of the wind. As wind blows into the open end of the sock, it inflates and points away from the wind's source, showing the wind direction. The degree to which the sock inflates and streams out indicates the wind speed; a more horizontal sock signifies a stronger wind, while a limp sock indicates calm conditions.

Windsocks are commonly found at airports, where they are crucial for pilots. They provide a visual cue for wind conditions on the runway, helping pilots determine the best approach and take-off direction, and assess potential crosswind components. Beyond aviation, windsocks are also used in industrial areas, particularly those with potential for hazardous gas leaks, to show the dispersion direction of airborne pollutants. They can also be seen at sporting events, on farms, and along roadways in windy regions.

The design of a windsock is generally standardized. They are often made of bright colors, such as orange or red, for high visibility, though they can also be striped to give a better indication of wind speed. The size of a windsock can vary depending on its location and the expected wind conditions. Maintaining a windsock involves ensuring it is securely attached to its mast and that the fabric is not torn or degraded, which could impair its function.