The assembly constraints are important to insure the correct operation of the flap.

Select the surface of the boss and the inner surface of the mating hole. Select the Assembly menu and select Centre Axes

This will ensure the flap is always aligned with the wing.

Select the inner face of the end of the flap and the inside face of the wing cutout. Under the Assembly menu select Mate Faces. This action will ensure the flap stays in the correct position relative to the cutout. If the last step is omitted the results will be the same as those shown in Fig. 14

Whilst the flap is correct in its rotation plane, it can be moved right through the wing. Revolutionary wing design!!

The final action to be performed is to fix the wing in place so that both the wing and flap do not move together when the animation is started.

Select the wing from the select parts button. From the Assembly menu select Fix Component.

The wing is now complete and ready for operation. You may wish to modify the wing further by adding wing mounted fuel tanks or other flaps and aerilons.

An example of wing mounted fuel tanks is shown in Fig. 15