Notation for Body Axes

The standard notation for the body axis sytem for aircraft dynamics. This sectionexplains the significance of the term body axis and develops the non-linear inertial equations of motion which are the basis of almost all aerospace dynamics. In the following the forces due to aerodynamic forces are considered. These aerodynamic forces are are generally treated by linearisation so the non-linear models developed here are subsequently linearised (ie approximated by simpler linear models