The CAP 10C spar consists of two carbon soles, protected on each face by a strip of wood.

The spar caps are linked by diaphragms, a sort of internal partition, and by plywood webs, which constitute the front and back faces of the spar.

The spar caps are fabricated by a painstaking bonding process of stacks of six carbon composite strips.

This is why we have designed a special-purpose tool weighing several hundred kilos. It is equipped with pneumatic cylinders making it possible to maintain a pressure close to 2 bars for 10 hours on the two spar soles.

The soles, once released from the tool, match the shape of the wing dihedral and are ready to be assembled in a purpose-built template.

The fabrication procedure has been validated, and the production of spars began in January 2001.

Our objective between now and the end of 2001, is to reach a rate of one wing per week.