TURBINE AIRFOIL WITH MINICORE PASSAGE HAVING SLOPED DIFFUSER ORIFICE

    公开(公告)号:US20190383147A1

    公开(公告)日:2019-12-19

    申请号:US16373008

    申请日:2019-04-02

    Abstract: A turbine airfoil includes an airfoil outer wall that defines leading and trailing ends and first and second sides that join the leading and trailing ends. At least one cooling passage is embedded in the airfoil outer wall and has a radially-elongated entrance manifold, a radially-elongated diffuser orifice that opens to an exterior surface of the airfoil outer wall, and a bank of sub-passages fluidly connecting the radially-elongated entrance manifold with the radially-elongated diffuser orifice. The radially-elongated diffuser orifice is sloped relative to the radially-elongated entrance manifold.

    Method and Apparatus to Enhance Laminar Flow for Gas Turbine Engine Components

    公开(公告)号:US20170370228A1

    公开(公告)日:2017-12-28

    申请号:US15696307

    申请日:2017-09-06

    Abstract: A gas turbine engine component has a component body configured to be positioned within a flow path of a gas turbine engine having an external pressure, and wherein the component body includes at least one internal cavity having an internal pressure. At least one inlet opening is formed in an outer surface of the component body to direct hot exhaust gas flow into the at least one internal cavity, and there is at least one outlet from the internal cavity. The internal pressure is less than an inlet external pressure at the inlet opening and the internal pressure is greater than an outlet external pressure at the outlet opening to controllably ingest hot exhaust gas via the inlet opening and expel the hot exhaust gas via the outlet opening to maintain a laminar boundary layer along the outer surface of the component body.

    Method of manufacture using autonomous adaptive machining

    公开(公告)号:US10955815B2

    公开(公告)日:2021-03-23

    申请号:US16185378

    申请日:2018-11-09

    Abstract: A method of removing features from a cast workpiece includes generating a nominal toolpath for machining the cast workpiece. The cast workpiece is mounted onto a platform of a computer numeric control machine. The cast workpiece is inspected with a probe to generate probe data. Features to be removed are identified based upon the probe data generated during the inspection. Any expected features of the cast workpiece that are missing from the cast workpiece are identified. A transformation matrix is applied to the nominal toolpath with a controller of the computer numeric control machine, wherein the transformation matrix is based upon the probe data. Alignment of the cast workpiece is adjusted relative to the computer numeric control machine based on the transformation matrix with the computer numeric control machine. Features are removed from the cast workpiece that were identified during inspection.

    Construction of multi-layered refractory metal core for investment casting

    公开(公告)号:US10821499B2

    公开(公告)日:2020-11-03

    申请号:US15897312

    申请日:2018-02-15

    Abstract: A refractory metal core laminate assembly, comprising: a first refractory metal core layer having exterior surfaces and a first side and a second side opposite the first side; a second refractory metal core layer having exterior surfaces and a first side and a second side opposite the first side, the second refractory metal core layer being arranged above the first refractory metal core layer with the second refractory metal core layer first side facing the first refractory metal core layer second side; a layer of a powder bed material between the first refractory metal core layer second side and the second refractory metal core layer first side; and a coating of the powder bed material coupled to the first refractory metal core layer exterior surfaces and the second refractory metal core layer exterior surfaces.

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