Abstract:
A floating, non-contact seal (318) comprises: a shoe (336), and at least three beams (330a,b,c), each beam (330a,b,c) having a first axial end (340a,b,c) and a second axial end (346a,b,c), where the first axial ends (340a,b,c) are coupled to the shoe (336) and the second axial ends (346a,b,c) are coupled to a ring structure (288). An engine comprises: a first structure, a second structure configured to rotate relative to the first structure, and the floating, non-contact seal (318), where the seal (318) interfaces the first structure and the second structure.
Abstract:
A component retaining assembly (65) includes a housing (62) including a circumferential slot (76). A component (64) is mated to the housing (62). The component (64) includes a first face (86) including at least two tabs (78). The at least two tabs (78) extending at outward from the first face (86) at least partially past a portion of the circumferential slot (76). A retaining ring (66) is disposed within the circumferential slot (76) and abuts the first face (86) of the component (64). The at least two tabs (78) overlap a portion of the retaining ring (66). A gas turbine engine (20) and a method are also disclosed.
Abstract:
Aspects of the disclosure are directed to an engine (10) comprising: a first structure (206), a second structure (212) configured to rotate relative to the first structure (206), and a floating, non-contact seal (218) that interfaces the first structure (206) and the second structure (212), where the seal (218) includes: a shoe (236), a first beam (230a) coupled to the shoe (236), and a second beam (230b) coupled to the shoe (236), where during a non-operational state of the engine (10) a reference point (398) of the shoe (236) is substantially centered within a range of radial deflections (394a, 396a) of the reference point (398) of the shoe (236) over the operating range of the engine (10).
Abstract:
A lubrication system for a fan drive planetary gear system according to an exemplary aspect of the present disclosure includes, among other things, a stationary first bearing configured to receive a lubricant from a lubricant input, the stationary first bearing is located adjacent a fan drive shaft. A second bearing is configured to rotate with the fan drive shaft, the first bearing engages the second bearing and is configured to transfer the lubricant from the first bearing to the second bearing and into at least one fluid passage in the fan drive shaft. A conduit fluidly connects the at least one passage in the fan drive shaft with at least one component on the fan drive gear system.
Abstract:
A borescope plug assembly includes a borescope plug having a shaft section and a tip section, a bushing engageable with the shaft section and a seal engageable with the tip section.
Abstract:
An assembly for a gas turbine engine includes a seal and a flow diverter. The flow diverter is disposed adjacent the seal to direct a secondary gas flow that passes across the seal away from a rotor cavity such that the secondary gas flow travels back toward a main gas flow path of the gas turbine engine.
Abstract:
A seal (200) according to the present disclosure includes a plate, and a floating shoe (200B) supported with respect to the plate (208) in a first direction. The floating shoe (200B) has a sealing feature (200C) extending in a second direction perpendicular to the first direction. At least one bearing (209) is between the plate (208) and the floating shoe (200B). The bearing (209)is configured to facilitate movement of the floating shoe (200B) with respect to the plate (208) in the second direction. A gas turbine engine including the seal and a method of sealing a rotating component with respect to a stationary component are also disclosed.
Abstract:
A seal assembly (10) includes first and second rings (16A,16B). The first ring (16A) includes a first outer ring (18A), a first beam (28A) connected to the first outer ring (18A), and a first shoe (22A). The first shoe (22A) includes free and fixed ends (24A,26A) and is configured to move radially. The second seal ring (16B) is disposed axially adjacent and is attached to the first seal ring (16A). The second seal ring (16B) includes a second outer ring (18B), a second beam (28B) connected to the second outer ring (18B), and a second shoe (22B). The second shoe (22B) includes free and fixed ends (24B,26B) and is configured to move in a generally radial direction. The free end (24B) of the second shoe (22B) is disposed axially adjacent to the fixed end (26A) of the first shoe (22A). The fixed end (26B) of the second shoe (22B) is disposed axially adjacent to the free end (24A) of the first shoe (22A).
Abstract:
Aspects of the disclosure are directed to a non-contact seal assembly comprising a plurality of seal shoes (54) arranged about a centerline (22) in an annular array, the seal shoes (54) including a first seal shoe (54) extending axially along the centerline (22) between a first shoe end (70) and a second shoe end (72). The non-contact seal assembly may comprise a seal base (52) circumscribing the annular array of the seal shoes (54), the seal base (52) comprising first, second and third inner radial seal base surfaces (33, 35, 37) where the third inner radial seal base surface (37) is axially between the first and second inner radial seal base surfaces (33, 36) and is radially proximate the centerline (22) with respect to the radially distal first and second inner radial seal base surfaces (33, 35). The non-contact seal assembly may further comprise a plurality of spring elements (56), each of the spring elements (56) radially distal from and connecting to a respective one of the seal shoes (54) and radially proximate the third inner radial seal base surface (37).