Weathercock Stability is a wind azimuth region associated with Unanticipated Yaw. What is its degree range?

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Multiple Choice

Weathercock Stability is a wind azimuth region associated with Unanticipated Yaw. What is its degree range?

Explanation:
Weathercock stability is the helicopter’s tendency to align its fuselage with the relative wind, driven by the vertical stabilizer and body shape acting like a weather vane. The wind directions that produce this stabilizing yaw effect in a way that can catch you off guard fall in the 120 to 240 degree range. In this band, the wind comes from the right-front around the rear quadrants toward the opposite rear, creating yaw moments that can develop or change quickly and may not be immediately anticipated by the pilot, especially during transient gusts or when delicate yaw control is being exercised. Winds from ahead (0–120 degrees) tend to yield more predictable weathercock behavior, and very narrow or extreme bearings (like around 300 degrees) don’t represent the broader unanticipated-yaw region as well. Therefore, the correct wind azimuth range associated with unanticipated yaw due to weathercock stability is 120–240 degrees.

Weathercock stability is the helicopter’s tendency to align its fuselage with the relative wind, driven by the vertical stabilizer and body shape acting like a weather vane. The wind directions that produce this stabilizing yaw effect in a way that can catch you off guard fall in the 120 to 240 degree range. In this band, the wind comes from the right-front around the rear quadrants toward the opposite rear, creating yaw moments that can develop or change quickly and may not be immediately anticipated by the pilot, especially during transient gusts or when delicate yaw control is being exercised. Winds from ahead (0–120 degrees) tend to yield more predictable weathercock behavior, and very narrow or extreme bearings (like around 300 degrees) don’t represent the broader unanticipated-yaw region as well. Therefore, the correct wind azimuth range associated with unanticipated yaw due to weathercock stability is 120–240 degrees.

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