US 12,270,347 B2
Air turbine starter with damping member
Shiloh Montegomery Meyers, Miamisburg, OH (US); Steven Ryan Kerley, Columbus, OH (US); and Thomas V Ng, Lebanon, OH (US)
Assigned to Unison Industries, LLC, Jacksonville, FL (US)
Filed by Unison Industries, LLC, Jacksonville, FL (US)
Filed on Apr. 25, 2023, as Appl. No. 18/306,644.
Prior Publication US 2024/0360795 A1, Oct. 31, 2024
Int. Cl. F02C 7/277 (2006.01)
CPC F02C 7/277 (2013.01) [F05D 2260/96 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An air turbine starter for starting an engine, comprising:
a starter housing having an inlet, an outlet, and a flow path extending between the inlet and the outlet;
a rotatable turbine member comprising a central hub defining a platform, and a set of blades circumferentially spaced about the platform and extending radially from the platform into the flow path; and
a damping member defining a body having a wearable portion and an axial stop, the axial stop projecting axially to the wearable portion and defining an axial boundary, and wherein the wearable portion is axially confronting at least one of the platform or the set of blades, wherein the wearable portion is located axially between the axial stop and the at least one of the platform or the set of blades, wherein the wearable portion comprises a first material and the axial stop portion comprises a second material different from the first material, wherein the axial stop of the body has at least one of a greater hardness or a greater strength than the wearable portion of the body and wherein the wearable portion is configured to exert a braking force.
 
16. An air turbine starter for starting an engine, comprising:
a starter housing defining a starter housing inlet, a starter housing outlet, and a flow path extending between the starter housing inlet and the starter housing outlet;
a rotatable turbine member comprising a central hub defining a platform, and a set of blades circumferentially spaced about the platform and extending radially from the platform into the flow path;
a first damping member comprising a disk with a rim located within the starter housing, wherein the disk forms an axial stop portion and the rim forms a wearable portion confronting at least one of the platform or the set of blades, the wearable portion located axially between the axial stop portion and the at least one of the platform or the set of blades, wherein the wearable portion comprises a first material and the axial stop portion comprises a second material different from the first material and wherein the axial stop portion has at least one of a greater hardness or a greater strength than the wearable portion; and
a second damping member, including a containment ring located within the starter housing, the second damping member radially spaced from the set of blades and defining a radial boundary confining the rotatable turbine member.