Abstract: A turbine bucket includes an airfoil, a platform adjacent to the airfoil, and a shank adjacent to the platform. The shank defines a shank cavity, and a divider in the shank cavity creates a pressure differential across the shank cavity. A method for cooling a turbine bucket includes directing a fluid to a forward shank cavity and creating a pressure differential between the forward shank cavity and an aft shank cavity.

Abstract: Methods suitable for reducing corner cracking of environmental barrier coating systems. The methods include forming at least one layer of a first portion of the environmental barrier coating system on at least a first region of the component, performing a first heat treatment, forming at least one layer of a second portion of the environmental barrier coating system on a second region of the component, and performing a second heat treatment to the component. Edges of the first portion and edges of the second portion form an angle of at most 60° with respect to a surface of the first region of the component. During the second heat treatment, the second portion of the EBC system expands and the expansion of the second portion of the EBC system is at least partially constrained by the first portion of the EBC system to reduce tensile interfacial stresses in the EBC system.

Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side wall and a suction side wall extending between a leading edge and a trailing edge. In addition, the airfoil may include a base and a tip disposed opposite the base. The tip may include a tip floor and pressure and suction side tip walls extending outwardly from the tip floor. Moreover, the tip may include an intermediate tip wall extending outwardly from the tip floor between the pressure and suction side tip walls. The intermediate tip wall may define a height that is less than a height of the pressure and/or suction side tip walls.

Abstract: A turbine bucket having an airfoil is disclosed. The airfoil may include a pressure side and a suction side extending between a leading edge and a trailing edge. In addition, the airfoil may include a tip. The tip may include a tip floor and a tip wall extending outwardly from the tip floor. The tip wall may include an inner surface defining an inner perimeter of the tip wall. Moreover, a plurality of notches may be defined by the inner surface around at least a portion of the inner perimeter.

Abstract: A system or method for applying a protective environmental coating for a gas turbine component. The coating includes a bond layer applied to a substrate comprised of a ceramic matrix composite material and environmental barrier coating layers. The first environmental barrier coating layer is bonded to the substrate by the bond layer. The bond layer comprises silicon and particles consisting of particles of Lanthanum or Cerium.

Abstract: A turbine rotor blade for a gas turbine engine is described. The turbine rotor blade includes an airfoil that includes a tip at an outer radial end. The tip includes a rail that defines a tip cavity; and the rail includes a circumscribing rail microchannel. The circumscribing rail microchannel is a microchannel that extends around at least a majority of the length of the inner rail surface.

Abstract: A turbine rotor blade used in a gas turbine engine, which includes an airfoil having a tip at an outer radial edge, is described. The airfoil includes a pressure sidewall and a suction sidewall that join together at a leading edge and a trailing edge of the airfoil, the pressure sidewall and the suction sidewall extending from a root to the tip. The tip includes a tip plate and, disposed along a periphery of the tip plate, a rail. The rail includes a microchannel connected to a coolant source.

Abstract: A method and system are provided for preventing data loss in a VoIP system. In particular, during a VoIP call, it is determined whether incoming ringing on a POTS line causes an unacceptable level of signal loss or errors. If so, for subsequent VoIP calls, the CO handling calls to the POTS line is instructed to either answer each call with a busy signal or automatically forward calls to the POTS line to the VoIP line or other selected telephone. Calling returns to normal upon ending of the VoIP call. In this manner, incoming ringing on the POTS line does not result in call dropping or lengthy retraining processes.

Abstract: A reinforced coating for a substrate includes a bond coat layer bonded to a surface of the substrate; an intermediate layer bonded to the bond coat layer; a reinforced layer bonded to the intermediate layer, wherein the reinforced layer comprises a woven fiber mesh disposed in the reinforced layer in a substantially planar position.

Abstract: A turbine airfoil includes a blade having a leading and trailing edges and an internal cooling circuit, and a plurality of film holes extending between the internal cooling circuit and an exterior of the blade. The plurality of film holes are shaped to generate a swirling flow exiting the film holes adjacent the leading edge to thereby enhance local convection and provide an insulating barrier to gaspath flow.

Abstract: A food pan carrier has a pan carrier body with a wheeled dolly attached thereto. The wheeled dolly is connected with at least one fastener. The wheeled dolly is removably connected to the food pan carrier body so that it may be easily connected and disconnected therefrom.

Abstract: A gas turbine blade may have a bond coat applied to its surface. The bond coat may include silicon and a reactive material. The reactive material may react with thermally grown oxide generated at the bond layer to prevent and reverse creep. One or more protective layers may be applied to the bond layer.

Abstract: A gas turbine blade may have a bond coat applied to its surface. A porous substrate may be applied to the bond layer and one or more protective layers may be applied to the bond layer such that the fiber mesh is embedded between the bond layer and the protective layer to prevent creep.

Abstract: A gas turbine blade having a surface may have a bond layer applied to a first section of the surface, wherein the bond layer is not applied to a second section of the surface. One or more protective layers may be applied such that the protective layers cover and overlap the bond layer making direct contact with an area of the surface immediately outside the first section of the surface and forming a mechanical constraint geometry about the edge of the bond layer.

Abstract: A method of forming a ceramic matrix composite component includes providing a formed ceramic member having a cavity, filling at least a portion of the cavity with a ceramic foam. The ceramic foam is deposited on a barrier layer covering at least one internal passage of the cavity. The method includes processing the formed ceramic member and ceramic foam to obtain a ceramic matrix composite component. Also provided is a method of forming a ceramic matrix composite blade and a ceramic matrix composite component.

Abstract: A spline seal for a hot gas path component is provided. The spline seal may include a first metal layer and a second metal layer. The first metal layer may have a first volumetric thermal expansion coefficient. The second metal layer may be disposed adjacent the first metal layer and have a second volumetric thermal expansion coefficient. The second volumetric thermal expansion coefficient may be higher than the first volumetric thermal expansion coefficient. When the spline seal is exposed to a heat source, the first and second metal layers may deform to provide a seal between the hot gas path component and an adjacent hot gas path component.

Abstract: An embodiment of the present invention takes the form of a seal that may substantially reduce cross-shank leakage between components mounted on a shaft. Embodiments of the seal may be connected to a wide variety of rotatable components including, but not limited to, compressor blades, turbine buckets, or the like.

Abstract: A sensing method is used for a capacitive sensing device, wherein the capacitive sensing device has a plurality of capacitive sensing components, each of which is charged or discharged by a charging component respectively. The sensing method comprises the steps of: a first sampling step of sampling at least one of charging or discharging time of a capacitive sensing component of the plurality of capacitive sensing components to determine a first sample time for the component sampled, wherein the component sampled and at least one another component of the plurality of capacitive sensing components are charged or discharged simultaneously during the first sampling step; a first comparing step of comparing the first sample time for the component sampled with a reference time; and an outputting step of outputting a trigger signal in the event that the first sample time exceeds the reference time.

Abstract: A dose control system for a radiation therapy treatment system. The dose control system monitors the dose output and addresses the effects of rotational dose variation and drift.

Abstract: Techniques for estimating advertisement inventory for search retargeting segments are provided. A total inventory for each cluster of a plurality of clusters is estimated based on a history of previously viewed pages and previously used search keywords that were submitted by users is searches performed prior to accessing the previously viewed pages. A search retargeting (SRT) segment is received that includes a set of search keywords. The SRT segment is received in a request for deliverable advertisement inventory for advertisements associated with the SRT segment. A deliverable inventory for the received SRT segment is estimated based on the estimated total inventories for the clusters.