What happens to the CG position when Fowler flaps are retracted?

When Fowler flaps are retracted, the center of gravity (CG) of the aircraft tends to move forward slightly. This is due to the fact that Fowler flaps create additional lift and change the distribution of air pressure and aerodynamic forces when they are deployed. When retracted, the lift generated by the wings reduces, which can lead to a shift in the overall aerodynamic configuration of the aircraft.

As the flaps are an extension of the wing structure, their position and weight can influence the distribution of the aircraft’s mass. When the flaps are extended, they may cause the CG to shift slightly towards the aft due to increased lift and change in the attitude of the aircraft. However, once the flaps are retracted, their weight and the aerodynamics involved cause the center of gravity to move forward slightly.

It’s important to understand the dynamics of how flaps affect lift and drag, as well as their role in changing the distribution of weight and forces acting on the aircraft, leading to this shift in CG position.