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
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.
Skap92 asking:
Someone can show me why the angle of attack tend to increase?
Community Comments (3)
D
dimky Posts: 514 10.01.2013 / 11:59
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.
M
murrayfaber Posts: 1 13.05.2015 / 13:44
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 Posts: 10 24.01.2019 / 20:59
May be the catch of this question lies in rising gusts.
Please Sign In to post a comment.