Wing Dynamic Pressure in flight mechanics refers to the air pressure experienced by the wing of an aircraft during flight. It is a measure of the kinetic energy per unit volume of the air in motion around the wing. This dynamic pressure is a key factor in aerodynamics, influencing the lift and other aerodynamic forces acting on the wing. Higher dynamic pressure enhances the effectiveness of the vertical tail in providing stability and controlling yawing motions by increasing the aerodynamic forces it generates. The formula to calculate Dynamic pressure as follows:
Where:
- S is the wing area in m2.
- b is the wingspan in m.
- Qv is the Tail 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.