Nondimensionalization reduces the dependence of all aerodynamic forces
and moments on density and airspeed to a simple factor. Without
nondimensionalization, almost every term in the polynomial equations
would include *V* and
as variables.

The nondimensional forces and moments are defined by
Equations 44-49.

The angle of attack and angle of sideslip, defined by
Equations 5 and 6, are the
nondimensional replacements for the dimensional wind-relative velocity
components (
*u*_{a},*v*_{a},*w*_{a}).

Equations 50-52 define nondimensional
angular speeds.

Unfortunately, there is not a standard definition of nondimensional angular speeds. Some references define the nondimensional speeds with a 2 in the denominator.

One other nondimensional parameter is defined analogously to the
nondimensional angular speeds.
,
the time derivative of
,
is used to account for the effect of downwash lag. Its
nondimensional form is:

The control deflections, which are angles, are already nondimensional.