A tiltrotor aircraft (10) includes a fuselage (12), a wing member (18) extending from the fuselage, an engine disposed relative to the wing member and a proprotor (26) mechanically coupled to the engine. The proprotor includes a plurality of proprotor blade assemblies (28) each including a spar (40) and a sheath (52) extending spanwise along the spar forming the leading edge (48) of the proprotor blade assembly. The spar has a root section (42), a main section (44) and a tip section (46). The spar has a generally oval cross section at radial stations along the main section and a first edge having a structural bias relative to a generally oppositely disposed second edge at the radial stations along the main section.
STRUCTURALLY BIASED PROPROTOR BLADE ASSEMBLY
PROPROTORANORDNUNG MIT VORGESPANNTER STRUKTUR
ENSEMBLE PALE DE ROTOR ORIENTABLE STRUCTURELLEMENT SOLLICITÉ
21.03.2018
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
FOLDING PROPROTOR BLADE ASSEMBLY HAVING INTEGRAL TANG ASSEMBLY
Europäisches Patentamt | 2018
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