An aircraft encounters wind shear where the wind speed rapidly and transiently changes from 120/30 to 120/10. If the aircraft was on a heading of 120° at the time with an airspeed of 100 kts, what would be the most significant consequence of this?
It is perhaps better to consider these questions in terms of the aircraft's energy:
- Headwind increasing / tailwind decreasing = gain of energy
- Tailwind increasing / headwind decreasing = loss of energy
In this question it states: the aircraft is on a heading of 120 when the wind changes from 120/30 to 120/10. This represents a decreasing 20 knot headwind which will result in a loss of energy and so…
- Aircraft sinks below the flight path
- Airspeed decreases
- Increased risk of stall
Keep it simple: There is now 20 knots less wind blowing over the wing and also into the pilot tube.
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