4 m), rotation axis--CE (~ 28%C), mass center of the model--CG (~ 42%C), flap hinge
line--S (~ 70%C), model mass (M=1.
The control flap is located at the trailing edge; the control variable u will be considered as a flap hinge
torque, added to aerodynamic flap torque T.
These components and assemblies include pylons, flap hinges
, struts, wing fittings, landing gear parts, spars, and many others.