The coefficient of moment about the center of gravity (Cm_cg) in flight mechanics is a dimensionless quantity that relates the moment (torque) generated about the center of gravity of an aircraft to various factors such as angles of attack, control surface deflections, and other aerodynamic characteristics. It’s a crucial parameter used to understand the stability and control characteristics of an aircraft.
       (Cmcg)w: Coefficient of moment about the center of gravity due to the weight (gravity) force.
- (Cmcg)f,n,p: Coefficient of moment about the center of gravity due to external forces, normal force, and propulsion force (if applicable).
- (Cmcg)t: Coefficient of moment about the center of gravity due to the thrust force.