A spar (102) for an airfoil (100) comprises a core (104), e.g. a foam core, a central structural member (105) extending through the core (104), an outer structural layer (106) surrounding the core (104) and central structural member (105) and a plurality of yarns (166,168) extending through the central structural member (105).
REINFORCED PROPELLER BLADE AND SPAR
VERSTÄRKTES PROPELLERBLATT UND HOLM
PALE D'HÉLICE ET LONGERON RENFORCÉS
26.02.2020
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |