The pitching moment coefficient () is a dimensionless coefficient used in aerodynamics to describe the pitching moment experienced by an airfoil. Positive values of indicate a nose-up pitching moment, while negative values indicate a nose-down pitching moment. The formula to calculate Pitching moment coefficient as follows:
Where:
- is the pitching moment acting on the body (N·m),
- is the density of the fluid ( kg/m³),
- is the velocity of the fluid relative to the body (m/s),
- is the reference area (m²),
- is the reference length (m).
- Cm is Pitching moment Coefficient in N-m/m2