Patent application number | Description | Published |
20130136614 | PROPELLER BLADE HAVING COMPLIANT ADHESIVE AT SPAR INTERFACE - A propeller blade includes a foam core, an adhesive layer formed on the core and a structural layer that covers at least a portion of the adhesive layer and that surrounds at least a portion of the foam core. | 05-30-2013 |
20130136615 | PROPELLER BLADE WITH LIGHTWEIGHT INSERT - A propeller blade includes a foam core and a structural layer that surrounds at least a portion of the foam core and includes a face side and a camber side is disclosed. The propeller blade also includes an insert disposed in the foam core in operable contact with the face side and the camber side of the structural layer. | 05-30-2013 |
20130280079 | PROPELLER BLADE WITH METALLIC FOAM SPAR CORE - According to one embodiment, a propeller blade includes a metallic foam core and a structural layer that surrounds at least a portion of the metallic foam core. | 10-24-2013 |
20130280084 | PROPELLER BLADE WITH INTERNAL STIFFENER - A propeller blade includes a foam core having a slot formed through it from a camber side to a face side, an internal stiffener disposed through the slot and including flanges in contact with both the camber and face sides and a structural layer that surrounds at least a portion of the foam core and in contact with the flanges on both the camber and face sides. | 10-24-2013 |
20130287584 | PROPELLER BLADE WITH MODIFIED SPAR LAYUP - According to one embodiment, a propeller blade includes a foam core and a structural layer formed of multiple layers that surrounds at least a portion of the foam core. The structural layer includes a mid-thickness location defined between the foam core and an outer edge of the structural layer and the multiple layers include at least one unidirectional layer and at least one biased layer disposed asymmetrically about the mid-thickness location. | 10-31-2013 |
20130343898 | PROPELLER BLADE WITH CARBON FOAM SPAR CORE - According to one embodiment, a propeller blade includes a carbon foam core and a structural layer that surrounds at least a portion of the carbon foam core. | 12-26-2013 |
20140133995 | PROPELLER BLADE WITH MODIFIED SPAR STIFFNESS - A propeller blade includes a foam core, a structural layer formed of multiple layers that surrounds at least a portion of the foam core and at least one section of fibers formed separately from the structural layer located between two of the multiple layers. | 05-15-2014 |
20150110630 | RETENTION ASSEMBLY FOR A PROPELLER BLADE - A retention assembly for a propeller blade includes an inner ring that is conformally shaped to a bore of an annular loop, the annular loop being associated with a root portion of the propeller blade; a base that is configured to be immediately adjacent the annular loop; an outer ring that includes an extended tapered portion which decreases in radial thickness from an inboard end to an outboard end; and an adhesive that adhesively connects complementary surfaces of the outer ring and the annular loop. Also, a propeller blade assembly includes a propeller blade having a blade portion and a root portion and the retention assembly configured to be attached to the propeller blade. | 04-23-2015 |
20150110633 | RETENTION ASSEMBLY WITH A CONICAL INTERFACE FOR A PROPELLER BLADE - A retention assembly for a propeller blade includes an inner ring that is conformally shaped to a bore of an annular loop, the annular loop being associated with a root portion of the propeller blade; a base that is configured to be immediately adjacent the annular loop; an annular outer ring including a bearing race interface that is conical in shape and includes a radially inner surface that conforms to a radially outer surface of the annular loop; and an adhesive that adhesively connects complementary surfaces of the outer ring and the annular loop. Also, a propeller blade assembly includes a propeller blade having a blade portion and a root portion; and the retention assembly that is configured to attach to the propeller blade. | 04-23-2015 |