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Old 12th Sep 2011, 15:48
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hvogt
 
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At a ground speed of 205 kt you are flying 205 nm in 60 min. In 10 min you are flying 205 nm * 10 min / 60 min ≈ 34.16 nm. If 1 cm represents 18.5 nm then the chart distance is 34.16 NM / 18.5 NM/cm ≈ 1.85 cm.
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