What is the headwind component multiplier for a wind angle of 030 degrees relative to the runway?

What is the headwind component multiplier for a wind angle of 030 degrees relative to the runway?

• A. 0.9
• B. 0.7
• C. 0.5
• D. 1.0

Answer: (A)

The headwind component is found by projecting the wind onto the runway direction, which means multiplying the wind speed by the cosine of the wind angle relative to the runway. At a wind angle of 30 degrees, the headwind multiplier is cos(30°) = 0.866, which is about 0.87. In these questions, that is typically rounded to 0.9, making it the best match. So the headwind component multiplier is approximately 0.9. The other numbers correspond to larger off-angle differences: around 45 degrees gives about 0.7, around 60 degrees gives about 0.5, and a wind directly from the front (0 degrees) would give 1.0.

The headwind component is found by projecting the wind onto the runway direction, which means multiplying the wind speed by the cosine of the wind angle relative to the runway. At a wind angle of 30 degrees, the headwind multiplier is cos(30°) = 0.866, which is about 0.87. In these questions, that is typically rounded to 0.9, making it the best match.

So the headwind component multiplier is approximately 0.9. The other numbers correspond to larger off-angle differences: around 45 degrees gives about 0.7, around 60 degrees gives about 0.5, and a wind directly from the front (0 degrees) would give 1.0.