The total moment about the center of gravity (CG) in flight mechanics refers to the combined rotational effect produced by various forces and torques acting on an aircraft or other object. Moments are responsible for causing rotational motion or changes in angular momentum.
- M_cg: Total moment about the center of gravity (CG).
The equation is a sum of moments calculated about the center of gravity for different forces or torques:
- (M_cg)w: Moment about the center of gravity due to weight (gravity) force.
- (M_cg)f: Moment about the center of gravity due to external force.
- (M_cg)n: Moment about the center of gravity due to normal force.
- (M_cgp): Moment about the center of gravity due to propulsion force (if applicable).
- (M_cg)t: Moment about the center of gravity due to thrust force.