The bank angle is the angle between the aircraft’s longitudinal axis and the horizontal plane. It determines the rate at which the aircraft changes its heading during a turn. In a level turn, increasing bank angle reduces lift but increases the component of weight acting perpendicular to lift, allowing for balanced turn without altitude change. The formula to calculate the bank angle as follows:
Where:
- W is the weight in N.
- L is the Lift Force in N.
- Φ is the Bank angle in radian.