With a trailing edge flap being lowered, due to rising gusts, what will happen to the angle of attack?
- Tend to decrease.
- Stay the same.
- Tend to increase.
Explanation from PART66Online
A rising gust adds an upward component to the relative airflow, which tilts the airflow up at the leading edge. Since angle of attack is measured between the chord and the relative airflow, this upward gust increases the effective angle of attack. Lowering the flap at the same time further raises the lift, compounding the gust effect.
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Skap92 asked · 10 Jan 2013
Someone can show me why the angle of attack tend to increase?
Community Comments (3)
P
PART66Online
10 Jan 2013
Rising gust vector practically has two components, vertical and horizontal. Vertical component will affect relative airflow in way to increase angle of attack. P.S. Angle of attack is the angle between relative airflow and wing chord line.
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murrayfaber
13 May 2015
Wouldn't the effect of putting flaps down cause the pressure distribution of the wing to move rearward (i.e. centre of pressure moves rearward ) causing the nose to be pushed down which will tend to decrease the angle of attack??
M
max.steelame
24 Jan 2019
May be the catch of this question lies in rising gusts.
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