The stratificationinthe moldof structural componentsand binder resinsis called "Composite".
The structural elementsnormallyare composed ofnatural or synthetic fibers as glass, carbon, polyester, kevlar,withspecialmechanical characteristicsthat normallyare wovento forma mesh.
Several layers oftissuesalsoofdifferentoriginareoverlying andimpregnatedwithadhesive resinsthat oncehardenedwill carry theseinposition at the desired shape .
The different mechanical characteristics of the fabrics can be used to improve stiffness, elasticity, resistance to impact or abrasion in circumscribed areas of the part to be created, thus optimizing form and lightness to obtain optimal results.
This type of construction allows to obtain self-supporting shapes with exceptional mechanical properties that can not be obtained with any other machining process.
The propellers obtained with this system can be made with profiles and shapes, thin or concave profiles, that can not be obtained with common materials, for example in wood or even with heavier materials such as aluminum.
The dimensional stability of the composite (the wooden propeller is deformed with temperature and humidity) and the resistance to abrasion (the wood is very fragile even when painted), increase the operational life of the propeller and offer constant performance.
Composite propellers are repairable in most cases (to be evaluated from time to time), are the best choice in the presence of sand, snow or high grass.