Abstract: Airfoils and methods of cooling an airfoil are provided. The airfoil may comprise a spar; a coversheet on the spar; and a dual feed circuit between the spar and the coversheet. The dual feed circuit may include a first dam, a second dam spaced apart from the first dam along the chord axis of the spar, a first inlet disposed adjacent to the first dam, a second inlet disposed adjacent to the second dam, a circuit outlet disposed between the first inlet and the second inlet, and a plurality of diamond and/or hexagonal pedestals disposed on an outer surface of the spar. The diamond and/or hexagonal pedestals may form a plurality of cooling channels between the first inlet, the second inlet, and the circuit outlet. There may be no other circuit inlets are located between the first inlet and the second inlet.

Abstract: An airfoil, such as a vane or a blade for a gas turbine engine, may be provided. The airfoil may include a platform; a spar; a fillet; and a coversheet. The spar may include a passageway inside of the spar for a cooling fluid, a pedestal on an outer surface of the spar, and a spar hole configured to direct the cooling fluid from the passageway to the outer surface of the spar. The fillet may be located at the intersection of the platform and the spar, and may couple the spar to the platform. The fillet and/or the coversheet may include a protrusion extending along the edge of the coversheet. The protrusion, along with the pedestal and the outer surface of the spar, may define a purge groove. The purge groove and a purge groove outlet may form a cooling path for cooling fluid to flow onto the platform.

Abstract: An airfoil, such as a vane or a blade for a gas turbine engine, may be provided, where the airfoil comprises: a platform; a spar; a fillet; and a coversheet. The spar may include a passageway inside of the spar for a cooling fluid, a pedestal on an outer surface of the spar, and a spar hole configured to direct the cooling fluid from the passageway to the outer surface of the spar. The spar may be coupled or integral to the platform by the fillet located at the intersection of the platform and the spar. An inner surface of the coversheet may be positioned on the pedestal of the spar. The fillet and/or the coversheet includes a protrusion extending along the edge of the coversheet. The protrusion, along with the pedestal and the outer surface of the spar, define a purge groove. The purge groove includes a purge groove outlet and the purge groove and the purge groove outlet together form a cooling path for cooling fluid to flow onto the platform.

Abstract: Airfoils and methods of cooling an airfoil are provided. The airfoil may comprise a spar; a coversheet on the spar; and a dual feed circuit between the spar and the coversheet. The dual feed circuit may include a first dam, a second dam spaced apart from the first dam along the chord axis of the spar, a first inlet disposed adjacent to the first dam, a second inlet disposed adjacent to the second dam, a circuit outlet disposed between the first inlet and the second inlet, and a plurality of diamond and/or hexagonal pedestals disposed on an outer surface of the spar. The diamond and/or hexagonal pedestals may form a plurality of cooling channels between the first inlet, the second inlet, and the circuit outlet. There may be no other circuit inlets are located between the first inlet and the second inlet.

Abstract: A dual-wall airfoil comprises a spar including pressure and suction side walls with raised features on outer surfaces thereof. A pressure side coversheet has an inner surface in contact with the raised features on the outer surface of the pressure side wall so as to define pressure side flow pathways between the pressure side wall and the pressure side coversheet, and a suction side coversheet has an inner surface in contact with the raised features on the outer surface of the suction side wall so as to define suction side flow pathways between the suction side wall and the suction side coversheet. The raised features on the outer surface of the pressure and/or suction side wall include an arrangement of pedestals, where each pedestal comprises an aspect ratio in a range from about 1:1 to about 5:1. The aspect ratio of the pedestals is varied within the arrangement.

Abstract: An endwall may be disposed at one end of a vane assembly. The endwall may comprise an endwall spar and a coversheet on the hot surface of the endwall spar. The endwall may further comprise a cooling fluid channel between the hot surface of the endwall spar and the cold surface of the coversheet. The cooling fluid channel may include a cooling fluid inlet disposed in the endwall spar, and a cooling fluid outlet. The cooling fluid outlet may be formed at an angle with the axis of the endwall spar. A plurality of pedestals may be disposed on the hot surface of the endwall spar extending into the cooling channel. The pedestals may be formed at an angle with the axis of the endwall spar to direct a cooling fluid.

Abstract: An endwall assembly disposed at one end of a vane assembly may comprise an endwall spar that includes an cold side, an hot side, a leading edge, a trailing edge, and an axis extending from the leading edge to the trailing edge perpendicular to the leading edge. The endwall assembly may include a coversheet on the hot side of the endwall spar and a cooling channel that includes a cooling fluid inlet disposed in the endwall spar, and a cooling fluid outlet. The endwall assembly may include a structure protruding from the cold side of the endwall spar, wherein the structure is located between the cooling fluid inlet and the cooling fluid outlet along the axis; and a cooling fluid source cavity on the cold side of the wall, the cooling fluid source cavity in fluid communication with the cooling fluid channel via the cooling fluid inlet.

Abstract: An airfoil with dual-wall cooling for a gas turbine engine comprises a spar having a pressure side wall and a suction side wall meeting at a leading edge and a trailing edge of the airfoil. An interior of the spar comprises a coolant cavity. The suction side wall includes an arrangement of rails on an outer surface thereof, where each rail extends along a non-chordal direction and terminates at or near the trailing edge. The airfoil also comprises a suction side coversheet overlying the suction side wall, where an inner surface of the suction side coversheet is in contact with the arrangement of rails so as to define a plurality of angled channels between the suction side wall and the suction side coversheet. The suction side wall also comprises inlet holes in fluid communication with the coolant cavity for feeding coolant to the angled channels, and the arrangement of rails is configured to direct the coolant through the angled channels and toward the trailing edge of the airfoil.

Abstract: The present disclosure is related to turbine vane assemblies comprising ceramic matrix composite materials. The turbine vane assemblies further including reinforcements that strengthen joints in the turbine vane assemblies.

Abstract: A computerized matching system enable users to utilize video clips to promote and/or find a person/people, place, or consumer item. The system is a recommendation service, embodied preferably in a mobile app, suggesting potential matches for its users. These suggestions are based upon the information and data entered by the users in their user profiles, as well as their Ideal Match Criteria (i.e. what it is they are seeking). The suggestions are also based upon algorithms that analyze and learn from available rating history data to make predictions on potential matches, utilizing rating trends of that user (i.e. the prior ratings entered by that user during their usage of the system while viewing other videos) as well as the rating trends of other users who have rated the same videos in a similar manner (herein referred to as Similar Rating Groups, or SRGs).

Abstract: An airfoil assembly includes a vane that includes an outer platform, an inner platform, and an airfoil. The outer platform defines an outer boundary of a gas path. The inner platform is spaced apart axially from the outer platform relative to an axis and defines an inner boundary of the gas path. The airfoil extends axially between and interconnects the outer platform and the inner platform. Force loads caused by gases interacting with the airfoil are configured to be transmitted from the airfoil assembly to a case arranged around the airfoil assembly.

Abstract: Disclosed are a blockchain-based platform and methods for monetizing a social media following. An example method may commence with receiving content associated with an object of a social media following. The content may be received from at least one content source. The method may further include aggregating the content received from the at least one content source. The method may continue with gamifying the aggregated content to facilitate interactions of at least one fan of the object of the social media following with the aggregated content. The method may further include awarding at least one virtual asset to the at least one fan based on the interactions with the aggregated content. The method may continue with securely storing transactions associated with the at least one virtual asset to a blockchain and facilitating exchange of the at least one virtual asset for a currency.

Abstract: A system includes an air foil positionable in a combustion flow path of a combustion turbine. A shank may be integrally formed with the air foil, and the platform may be integrally formed with the shank. The platform includes linear fluid passageways, access ducts penetrating a wedge face surface of the platform, and outlet apertures formed in a radially outward surface of the platform. The outlet apertures are in fluid communication with respective linear fluid passageways such that fluid flowing through the respective linear fluid passageways is discharged from the outlet apertures into the combustion flow path. The platform also includes plugs is disposed in respective access ducts to form a fluid tight seal and be positioned in at least one of the respective linear fluid passageways. Fluid flowing through the respective linear fluid passageways flows away from a respective plug for discharge from a respective outlet aperture.

Abstract: An airfoil including a spar and a cover sheet that are configured for cooling. The spar includes standoffs and a leading edge wall. The standoffs are disposed along a pressure and/or suction side. A pressure-side panel and a suction-side panel are coupled to the standoffs and/or the leading edge wall. Leading ends of the pressure-side panel and the suction-side panel are disposed adjacent to one another proximate to the leading edge. The standoffs extend beyond the pressure-side leading end toward the leading edge wall. At least one of the leading ends of the pressure-side and suction-side panels defines a notch to form an outlet port at the leading edge. Standoffs may be disposed to define grooves in between in communication with the outlet port.

Abstract: Disclosed are blockchain-based systems and methods for analyzing and tracking work performance. An example method may commence with detecting a plurality of actions performed by one or more users with regard to one or more digital files. The method may continue with creating a timestamp for each of the plurality of actions. The method may further include generating a hash value for each of the plurality of actions. The method may continue with storing the hash value and the timestamp associated with each of the plurality of actions to a record on a blockchain. The method may further include analyzing the hash value and the timestamp associated with the plurality of actions of the one or more users to evaluate the work performance of the one or more users.

Abstract: An airfoil assembly includes a roller joint formed between a ceramic airfoil portion and a carrier allowing sliding (rolling) radial movement therebetween to accommodate thermal growth disparity.

Abstract: An airfoil assembly includes a vane that includes an outer platform, an inner platform, and an airfoil. The outer platform defines an outer boundary of a gas path. The inner platform is spaced apart axially from the outer platform relative to an axis and defines an inner boundary of the gas path. The airfoil extends axially between and interconnects the outer platform and the inner platform.

Abstract: The current invention is a recommendation system that translates a user's mood into activities and/or files (music, video, and/or literature) that are personalized. The user selects an icon, emoticon, or emoji, that represents their desired mood and the system matches files and/or events and activities to that desired mood, personalized to each user.

Abstract: Systems and methods for providing augmented reality (AR) advertisements are described herein. An example method may commence with providing, to a user, at least one virtual object via an AR interface. The AR interface may be associated with an application running on an AR-enabled device. The method may further include streaming a gamified interactive content to the AR interface based on user data. The gamified interactive content may be associated with the at least one virtual object and designed to inform and educate the user by providing information about available options and features with regard to a product. The method may continue with analyzing user interactions with the gamified interactive content in response to the information and education provided to the user. The method may further include providing, based on the analysis, rewards to the user according to predetermined rules.

Abstract: The present disclosure is related to turbine vane assemblies comprising ceramic matrix composite materials. The turbine vane assemblies further including reinforcements that strengthen joints in the turbine vane assemblies.