Abstract:
Combustor panels (126, 128) for use in gas turbine engines having a panel body (136) having a first side (138) and a second side (137), and a plurality of cooling pins (140) extending from the first side, the plurality of cooling pins arranged in a pin array pattern, wherein at least some of the cooling pins extend a first height (H 1 ) from the first side of the panel body, each cooling pin having a pin width, and is separated from adjacent cooling pins of the pin array by a pin array separation distance (S 0 ). The pin array separation distance is equal to or greater than the pin width.
Abstract:
Combustor panels (126, 128) for use in gas turbine engines having a panel body (136) having a first side (138) and a second side (137), and a plurality of cooling pins (140) extending from the first side, the plurality of cooling pins arranged in a pin array pattern, wherein at least some of the cooling pins extend a first height (H 1 ) from the first side of the panel body, each cooling pin having a pin width, and is separated from adjacent cooling pins of the pin array by a pin array separation distance (S 0 ). The pin array separation distance is equal to or greater than the pin width.
Abstract:
Methods of manufacturing toothed components for gas turbine engines are provided. The methods include forming a first tooth in the component with a top land, a bottom land, a side wall extending therebetween, and a fillet radius transitioning between the side wall and the bottom land, forming a second tooth in the component adjacent the first tooth, the second tooth having a top land, a bottom land, a side wall extending therebetween and facing the first tooth, and a fillet radius transitioning between the side wall and the bottom land, the bottom land of the second tooth extending toward the bottom land of the first tooth, wherein the bottom lands define a gable area of the component, and forming a stress relief feature in the gable area such that the stress relief feature reduces a stress concentration near the gable area during operation of the toothed component.
Abstract:
According to one embodiment, a mini-disk (314) of a gas turbine engine having an axis is provided. The mini-disk includes a bore (320), a web (322) extending radially with respect to the axis of the gas turbine engine from the bore, a base (324) extending axially with respect to the axis of the gas turbine engine from the bore, a connector (331) located on an end of the base, the connector configured to connect with a hub arm (334a; 334b) of the gas turbine engine, and an expansion feature (346) configured in the base and located between the bore and the connector, the expansion feature configured to reduce an axial stiffness of the base.
Abstract:
A mid-turbine frame (57) for a gas turbine engine according to an example of the present disclosure includes, among other things, a first frame case (62, 64), a flange (78) coupled to the first frame case (62, 64), and a heat shield (60) adjacent to the flange (78) and between adjacent spokes (66). A method of cooling a portion of a gas turbine engine (20) is also disclosed.
Abstract:
A mid-turbine frame (57) for a gas turbine engine (20) includes an inner frame case (64) that includes a bolt opening (156) and at least one spoke (65) for connecting an outer frame case (62) to the inner frame case (64) that includes an inlet passage (118) that extends in a radial direction. A central bolt (112) extends through the bolt opening (156) for securing at least one spoke (65) to the inner frame case (64).
Abstract:
A gas-turbine engine (20) is provided. The gas-turbine engine (20) comprises a high pressure turbine (54) with an aft blade platform (106). A static structure may be disposed aft of the high pressure turbine (54) and proximate a cavity (104) defined by the aft blade platform (106). A vane of the static structure may have a vane platform (102) with a shaped tip (126; 200; 202; 204) extending into the cavity (104).
Abstract:
An airfoil extends between radially inner and radially outer platforms. The airfoil extends between a leading edge and a trailing edge, and merges into facing surfaces of the radially inner and outer platforms. A variable fillet merges a facing surface of one of the radially inner and outer platforms into a wall of the airfoil. The variable fillet has a length extending away from a surface of the airfoil and a height extending away from the facing surface of at least one of the radially inner and outer platforms outwardly on to the airfoil. The variable fillet has a greater length at one of the leading edge and the trailing edge. A spaced portion has a shorter length at locations spaced from at least one of the leading and trailing edges. A mid-turbine frame and a gas turbine engine are also disclosed.
Abstract:
A seal land for a gas turbine engine can include a seal body circumferentially extending about a longitudinal centerline axis. The seal body includes at least one sealing surface that extends in a plane that is transverse to the longitudinal centerline axis.
Abstract:
An investment casting method includes providing a stock investment casting core (40), bending the stock investment casting core (40) to thereby form a production investment casting core (40) that conforms to a design cooling passage shape, and casting an alloy around the production investment casting core (40) to form a cast article.