The moment about the trailing edge () refers to the torque or twisting effect applied to an object or surface, typically an airfoil or wing, around its trailing edge due to aerodynamic forces. In aerodynamics, moments play a crucial role in determining the balance and stability of an aircraft or other objects moving through a fluid medium.
- is the moment about the trailing edge.
- is the chord length of the airfoil.
- is the lift per unit span (force per unit length) acting on the airfoil.
- Â is the moment about the quarter-chord point.