Weight and Balance Edit


Center of GravityEdit

The center of gravity can be determined here. It is always on the longitudinal design axis of the aircraft (this is, on the lateral position "zero").

The data fields:

  • Forward limit
  • Default longitudinal position
  • Aft limit
  • Vertical position

The longitudinal position affects the pitch stability. It is also important in conjunction with the landing gear position: For example, if an aircraft has the main wheels tricycle gear too far aft of its center of gravity, it will have problems raising the nose during the take-off run.

The vertical position affects roll stability.

The forward and aft limits determine the range of center-of-gravity positions that can be set in the Weights and Balance menu in X-Plane during run time. The Plane Maker limits are only used for colour-coding the position bar in X-Plane, the limits can actually be exceeded in X-Plane by a certain margin.

The forward and aft limits also define the range of the center-of-gravity indicator instrument that can be added to the Panel. It is graduated in feet aft of the origin of the design coordinates, meaning it is the same as in Plane Maker while the X-Plane center-of-gravity slider indicates inches aft of the origin.

Note: The default center-of-gravity position is valid only for the aircraft without any fuel load and with no Weapons loaded. The fully-loaded center-of-gravity position can deviate from the default value if the fuel tanks or the weapons are not located on the same longitudinal position - make sure to take this into account in the design of your aircraft.