Put an airplane in the picture (cont'd)
Imagine a small airplane in the picture.
Align the airplane parallel to the blue axis causing the green axis to protrude from the top of the pilots head.
Orient the airplane so that the pilot is looking in the direction of the blue axis when she is looking forward.
Cause the right wing of the airplane to be pointing in the direction of the red axis.
Assume that the object is firmly attached to the airplane and will experience the same motion as the airplane.
Figure 19. An airplane with its 3D axes exposed.