The yawing moment in flight mechanics refers to the rotational force acting around the aircraft’s vertical axis, influencing its heading. It occurs due to asymmetries in aerodynamic forces, such as uneven thrust, crosswinds, or control surface deflections. This rotational motion influences the aircraft’s heading and requires corrective actions from the pilot, typically using the rudder. Effective control of yawing moments is crucial for maintaining directional stability during flight. The formula to calculate Yawing moment as follows:
Where:
- Qw is the Dynamic pressure of Wing in Pa,
- S is the wing area in m2
- b is the wingspan in m,
- N is the -ve Yawing moment.