MUSP deals with the engineering of demonstrators. Within the FIREMAT project MUSP developed one for the construction sector and 1 component for the aeronautical sector. In particular, the creation of a hood for the Zefhir helicopter, in FML material. MUSP carried out the development of material models: thanks to a numerical modeling path, MUSP obtained the data necessary for the modeling of the component in 1:1 scale and achieved the optimization of the composite playbook. In the final phase MUSP dealt with the sizing of the demonstrator subjected to operational stresses (focus on structural optimization to combine strength and lightweight).