Dual radial scoop oil delivery system
A rotating structure provides a first annular array of first radial scoops and a second annular array of second radial scoops arranged axially with respect to the first annular array of first radial scoops. A first component is arranged in an axially forward direction relative to the first annular array of first radial scoops. A second component is arranged in an axially aft direction relative to the second annular array of second radial scoops. A lubrication system includes at least one nozzle aimed at the first and second annular arrays of first and second radial scoops. A first lubrication delivery path fluidly connects the first annular array of first radial scoops to the first component along the axially forward direction. A second lubrication delivery path fluidly connects the second annular array of second radial scoops to the second component along the axially aft direction.
1. A gas turbine engine comprising:
an engine static structure;
a rotating structure configured to rotate relative to the engine static structure, the rotating structure provides a first annular array of first radial scoops, and the rotating structure provides a second annular array of second radial scoops arranged axially with respect to the first annular array of first radial scoops;
a first component arranged in an axially forward direction relative to the first annular array of first radial scoops, and a second component arranged in an axially aft direction relative to the second annular array of second radial scoops;
a lubrication system including at least one nozzle aimed at the first and second annular arrays of first and second radial scoops, and a first lubrication delivery path fluidly connecting the first annular array of first radial scoops to the first component along the axially forward direction, and a second lubrication delivery path fluidly connecting the second annular array of second radial scoops to the second component along the axially aft direction; and
wherein the first annular array of first radial scoops are defined by first and second radially outwardly extending walls, and the second annular array of second radial scoops are defined by the second radially outward extending wall and a third radially outwardly extending wall, the second radially outward extending wall common to both the first and second annular arrays of first and second radial scoops to axially separate the first and second annular arrays of first and second radial scoops from one another.
2. The gas turbine engine of claim 1 , wherein the rotating structure includes a ring mounted to a shaft, the first annular array of first radial scoops and the second annular array of second radial scoops are provided on the ring.
3. The gas turbine engine of claim 2 , wherein a seal is provided radially between the ring and the shaft, the seal fluidly separating the first lubrication deliver path and the second fluid deliver path, the seal positioned axially between the first annular array of first radial scoops and the second annular array of second radial scoops.
4. The gas turbine engine of claim 2 , wherein the ring includes a first flange extending in the axially forward direction, and a second flange extending in the axially aft direction, and comprising first and second clamping structures respectively abutting the first and second flanges to secure the ring to the shaft.
5. The gas turbine engine of claim 2 , wherein each of the first annular array of first radial scoops and the second annular array of second radial scoops includes 4 to 8 scoops.
6. The gas turbine engine of claim 5 , wherein each of the first annular array of first radial scoops and the second annular array of second radial scoops includes an arcuate tapered surface leading to a window that is configured to fluidly communicate lubricant from an outer diameter of the ring to an inner diameter of the ring.
7. The gas turbine engine of claim 6 , wherein the first radial scoops of the first annular array of first radial scoops and the second radial scoops of the second annular array of second radial scoops are circumferentially aligned with one another.
8. The gas turbine engine of claim 1 , wherein the at least one nozzle includes a first nozzle is axially aligned with the first annular array of first radial scoops, and a second nozzle is axially aligned with the second annular array of second radial scoops.
9. The gas turbine engine of claim 1 , comprising a reservoir configured to collect the lubricant, and a pump configured to deliver a lubricant from the reservoir to the at least one nozzle.
10. The gas turbine engine of claim 1 , wherein at least one of the first and second components is provided by a bearing compartment including a bearing.
11. The gas turbine engine of claim 10 , wherein the bearing supports the rotating structure.
12. The gas turbine engine of claim 1 , wherein at least one of the first and second components is provided by a wall that is configured to be thermally stressed.
13. The gas turbine engine of claim 1 , wherein the first, second and third radially outwardly extending walls provide annular pockets discrete from one another, the annular pockets collectively providing the first and second radial scoops.