Several Uses of Wind Direction Indicators
When it comes to wind direction indicator, most people think of an airport wind indicator. While that is one use, there are many others. One of the oldest examples of an indicator is the weathervane – the one with a rooster on top of four arrows that indicate wind direction. Another longstanding option is the windsock, which is still used today at many airports. Both of these, as well as modern-day indicators, move according to the direction from which the wind blows and with minimal resistance. That means that even with a light breeze, the indicator will show you the direction of the wind. •
Airports
A wind direction tetrahedron is the most commonly used. This type of indicator has a large yet lightweight framework in the shape of a tetrahedron, which is triangular. Covering this framework is either wood, fabric, or thin metal, which is then painted in bright red, orange, or another color. The framework then mounts on a pivot, which swings freely when the wind blows. At airports, this indicator always points into the wind, allowing approaching pilots to determine the correct direction to land safely. •
Crop Dusting
Crop dusting pilots also rely on wind indicators to ensure they spray chemicals on crops without affecting nearby businesses or homes.
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