An aircraft’s rate of climb is calculated as 1 100 feet per minute at a TAS of 200 kt. Determine the minimum headwind component required to achieve a climb gradient of 6% at that airspeed:
Calculate rate of climb (ROC) on a given climb angle or gradient using the following rule of thumb formulae:
ROC (ft/min) = GP° × GS (NM/min) × 100
ROC (ft/min) = GP % × GS (kt)
- 1100 ft/min = 6% x GS (kt)
- GS (kt) = 183.33 kt
Since we have a TAS of 200 kt, the headwind must be more than approx. 16.67 kt.
Closest option: 20 kt
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