A tiltrotor aircraft includes a fuselage, a wing member extending from the fuselage, an engine disposed relative to the wing member and a proprotor mechanically coupled to the engine. The proprotor includes a plurality of proprotor blade assemblies each including a spar and a sheath extending spanwise along the spar forming the leading edge of the proprotor blade assembly. The spar has a root section, a main section and a tip section. 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
2017-11-23
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
FOLDING PROPROTOR BLADE ASSEMBLY HAVING INTEGRAL TANG ASSEMBLY
European Patent Office | 2018
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