Rotatable trunnions for variable pitch blades

Abstract

Rotatable trunnions for variable pitch blades are disclosed herein. An variable pitch blade assembly comprises a trunnion defining a pitch axis, the trunnion including: a first sleeve defining a face of the trunnion; and a second sleeve within the first sleeve, the second sleeve including a pedestal and a column extending from the pedestal; a first spar for a fan blade, the first spar having a base portion and a mounting portion, the mounting portion protruding from the face of the trunnion, the base portion including an inner surface defining a bore, wherein the column of the second sleeve is disposed within the bore of the base portion, wherein the first sleeve, the second sleeve, and the first spar are coaxial with the pitch axis; and a second spar extending from the face of the trunnion, the second spar laterally offset relative to the first spar.

Dependencies are inferred from the claim text.