Abstract:
A component for a gas turbine engine includes a wall and a cooling hole extending through the wall. The wall has a first surface and a second surface. The cooling hole includes a metering section extending downstream from an inlet in the first surface of the wall and a diffusion section extending from the metering section to an outlet in the second surface of the wall. The diffusion section includes a first plurality of lobes diverging longitudinally and laterally from the metering section on a first side of a centerline axis of the cooling hole and a second plurality of lobes diverging longitudinally and laterally from the metering section on a second side of the centerline axis.
Abstract:
An assembly for a turbine engine is provided. This turbine engine assembly includes a shell and a heat shield with a cooling cavity between the shell and the heat shield. The heat shield defines a plurality of cooling apertures and an indentation in a side of the heat shield opposite the cooling cavity. The cooling apertures are fluidly coupled with the cooling cavity. The indentation is configured such that cooling air, directed from a first of the cooling apertures, at least partially circulates against the side of the heat shield.
Abstract:
Die Erfindung betrifft ein filmgekühltes Gasturbinenbauteil (8) für eine Gasturbine, mit einer einem Heißgas (39) aussetzbaren Oberfläche (38), in der eine Anzahl von Filmkühlöffnungen (36) münden, wobei jede der betreffenden Filmkühlöffnungen (36) längs ihrer Durchströmungsrichtung einen Kanalabschnitt (48) und einen sich an den Kanalabschnitt unmittelbar anschließenden Diffusorabschnitt (46) umfassend eine stromauf angeordnete Diffusorkante (44), zwei Längskanten (42) und eine stromab angeordnete Diffusorkante (40) aufweisen, wobei jede Längskante (42) mit der stromab angeordnete Diffusorkante (44) in einem Eckbereich (54) zusammentrifft. Um eine wirksame Anordnung von Filmkühlöffnungen (36) bereit zu stellen, dessen Kühlfilm sich näher als bisher hinter der stromab angeordneten Diffusorkante geschlossen ausbildet, wird vorgeschlagen, dass zumindest zwei unmittelbar benachbarte, vorzugsweise alle Filmkühlöffnungen (36) der Reihe (30, 34) so ausgestaltet sind, dass deren Kanalachsen (50) der jeweiligen Kanalabschnitte (48) gegenüber der lokalen Strömungsrichtung (52) des Heißgases (39) geneigt sind und deren Diffusorabschnitte (46) jeweils derart asymmetrisch ausgebildet sind, dass die unmittelbar benachbarten Eckbereiche (54) der betreffenden Filmkühlöffnungen (36) in Strömungsrichtung (52) des Heißgases (39) betrachtet fluchten.
Abstract:
L'invention porte notamment sur un procédé (100) de réparation d'un carter de soufflante (10) présentant un dommage (11) sur sa surface interne (12). Le procédé (100) comporte une étape (102) de fixation d'un élément de renfort (13) sur le carter de soufflante (10), l'élément de renfort (10) étant fixé sur la surface externe (14) du carter de soufflante (10) et en regard du dommage (11).
Abstract:
A turbine airfoil (10) usable in a turbine engine and having an internal cooling system (14) with one or more diffusion film cooling holes (16) with an exhaust outlet (18) positioned at the stagnation line (20) at the leading edge (22) and configured to exhaust cooling fluid to the pressure and suction sides (24, 26) of the airfoil (10) is disclosed. The diffusion film cooling hole (16) may be formed from a first section (28) having a generally constant cross-section and a second section (30) extending outward from the first section (28) with a diverging cross-sectional area. The exhaust outlet (18) of the diffusion film cooling hole (16) may include a curved side that follows the curvature of the outer surface (34) at the leading edge (22). In at least one embodiment, the turbine airfoil (10) may include a showerhead (36) at the leading edge (22) formed from a single row (38) of diffusion film cooling holes (16) that exhaust cooling fluid to the pressure and suction sides (24, 26) of the airfoil (10).
Abstract:
A turbine blade (10) having a squealer tip (12) at a radially outer end of the turbine blade (10) with a plurality of abradable coating cutting tips (18) extending radially therefrom toward a ring segment (20) is disclosed. During operation, the abradable coating cutting tips (18) may cut into an abradable coating (22) on the ring segments (20) of the turbine engine that are positioned radially outward from the turbine blade (10). The plurality of abradable coating cutting tips (18) may include one or more cutting arrises (28) extending from the squealer tip (12) to an outermost tip (30) of the at least one of the abradable coating cutting tips (18).
Abstract:
A gas turbine engine component that includes a structure having a surface which includes multiple cooling channels having a width of 20-30 µm and a depth of 25-50 µm.