The sideslip angle () is the angle formed between the aircraft’s longitudinal axis and the relative wind, indicating the degree of lateral deviation from coordinated flight. The sideslip angle is crucial for controlling aerodynamic forces during maneuvers like slips and skids. Pilots rely on this information to maintain coordinated flight, especially in situations where wind or other factors can deviate the aircraft from its intended path. The formula to calculate sideslip angle as follows:
Where:
- S is the wing area in m2.
- Qw is the Wing dynamic pressure in Pa.
- Cn is the  Yawing moment coefficient.
- lv is the Vertical tail moment arm in m.
- Sv is the Vertical tail area in m2.
- Cv is the Vertical tail Lift curve slope in 1/rad.
- β is the Sideslip angle in radian.
- σ is the Sidewash angle in radian.
- Qv is the Tail Dynamic pressure in Pa.
- b is the wingspan in m.