This information is part of the Modelica Standard Library maintained by the Modelica Association.

Function that computes the theoretical gravity of the WGS84 ellipsoid earth model at and close to the earth ellipsoid surface, for the given "geodeticLatitude" and the given "height=r[2]" over the ellipsoid surface.

gravity = theoreticalNormalGravityWGS84(r, phi)

r	Type: Position[3] (m) Description: Position vector from world frame to actual point, resolved in world frame
phi	Type: Angle_deg (°) Description: Geodetic latitude

gravity	Type: Acceleration[3] (m/s²) Description: Gravity acceleration at position r, resolved in world frame