Patent application number | Description | Published |
20130064669 | BLADE AND METHOD FOR MANUFACTURING BLADE - A method of manufacturing a rotor blade is provided. The method includes forming a preform from a plurality of composite plies, the preform including an airfoil portion and a dovetail portion, removing a cutout portion from the dovetail portion of the preform to define a cutout in the preform, wherein the removing the cutout portion facilitates reducing residual stresses in the preform, and inserting an insert into the cutout formed by the removal of the cutout portion. | 03-14-2013 |
20130146217 | Method of Applying Surface Riblets to an Aerodynamic Surface - A method for applying texture to an aerodynamic surface is provided. A master plate is provided having a textured surface. A first material is then applied to that surface and cured forming a caul sheet with a negative impression of the master plate textured surface. A surface to which a texture is to be applied is then provided; this may be an aerodynamic surface. Another material, different from the first, is then applied to the aerodynamic surface and the caul sheet is placed on top. The second material is cured and the caul sheet is removed. The second material is adhered to the aerodynamic surface and has a surface that is substantially a negative impression of the caul sheet textured surface and substantially similar to the master plate textured surface. | 06-13-2013 |
20130302168 | Embedded Actuators in Composite Airfoils - An airfoil having active actuators and at least one morphing area allowing shape change of the airfoil and further allowing for optimization of the airfoil shape at more than one operating condition. | 11-14-2013 |
20140161620 | ATTACHMENT OF COMPOSITE ARTICLE - A composite article including composite component extending heightwise from a component base to a component tip and lengthwise between spaced apart component first and second edges. Component plies having widthwise spaced apart ply first and second sides and ply edges therebetween. Component mounted on a spar which includes a shank extending heightwise into the composite component, tab at upper end of shank and substantially or fully embedded in the composite component, and tab tip. Ply edges of at least a first portion of the plies directly or indirectly contacting or pressing against the tab. Ply edges of at least a second portion of the plies may directly or indirectly contact or press against the tab tip. Ply edges of first portion may press against one or more indented or recessed surfaces in the tab. The composite article may be a composite blade or vane including a composite airfoil. | 06-12-2014 |
20140322482 | COMPOSITE ARTICLE INCLUDING COMPOSITE TO METAL INTERLOCK AND METHOD OF FABRICATION - A composite article including a composite component, a metallic component and one or more interlock components. The composite component including a plurality of composite plies and extending heightwise from a component base to a component tip and lengthwise between spaced apart component first and second edges, the composite. The metallic component including a first surface and a second surface and a plurality of openings formed therein extending from the first surface to the second surface. The metallic component including at least a portion substantially or fully embedded in the composite component. The one or more interlock components is interwoven through one or more of the plurality of openings in the metallic component and extending into and at least partially embedded in the composite component to provide an interlocking system between the composite component and the metallic component. A method of fabrication of a composite article is also provided. | 10-30-2014 |