After my first post yesterday on the topic, here a n new episode on my explanations/demonstration of Relational capabilities when using CATIA Core Engineering Roles, such as Mechancal&ShapeEngineer 

After creating Booms structures, I focused myself on the Wings structural parts. I choose to divide the wing in 3 sub-assemblies, in which one I have created a Skeleton with published elements (geometries and parameters)

Of course, each mechanical parts then imports needed elements for its designs.

Here is a short video of how was designed one of these mechanical parts.

This method of design allows then to modify elements defined in the skeleton and to update impacted mechanical parts when needed. And only really impacted mechanical part thanks to the usage of publications.

For instance, I can modify the length of the surface of the "external wing"

Or I can modify the shape of the middle part of the wing.

A simple click on the Assembly Update icon is needed to update impacted parts loaded in session.

I will show you other great scenarii in next episode.

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