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Aircraft Operations. Volume II - Construction of Visual and Instrument ...

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I-2-3-12 Procedures — <strong>Aircraft</strong> <strong>Operations</strong> — <strong>Volume</strong> <strong>II</strong><br />

23/11/06<br />

Wind spiral<br />

E θ<br />

r<br />

θ<br />

Figure I-2-3-4 Wind spiral<br />

E<br />

Still air track<br />

r is the still air radius <strong>of</strong> turn in km (NM)<br />

Eθ is the wind effect for the time taken to change heading by θ degrees<br />

θ w whereRistherate<strong>of</strong>turnin°/s<br />

E= θ R<br />

X km(NM)<br />

3 600<br />

<strong>and</strong> w the wind speed in km/h (kt)

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