Yawing moment coefficient (Cn) Calculator

The yawing moment coefficient (Cn) is a dimensionless aerodynamic parameter that describes the rotational force, or moment, experienced by an airfoil or a wing around its vertical axis when subjected to a sideslip angle in an airstream. The yawing moment coefficient provides insight into how an aircraft responds to yawing motion. A positive indicates a stabilizing effect, meaning the aircraft tends to return to its original heading when disturbed. A negative implies a destabilizing effect, potentially leading to uncontrolled yawing motion. The formula to calculate Yawing moment Coefficient as follows :

Yawing moment coefficient (Cn)

Where:

  • = yawing moment coefficient (dimensionless)
  • = yawing moment (N·m)
  • = air density (kg/m³)
  • = velocity of the airflow (m/s)
  • = reference area (m²)
  • = wingspan (m)

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