Ring-shaped compliant support
A ring-shaped compliant support for a gas turbine engine includes, among other things, an annular case, and an adjustment member that will turn relative to the annular case if exposed to thermal energy.
1. A method of moving a gas turbine engine component, comprising;
exposing an annular case and an adjustment member to thermal energy to turn the adjustment member relative to an annual case about a central axis of a gas turbine engine; and
supporting a gas turbine engine component with the adjustment member,
wherein the adjustment member comprises a first array of wings extending radially and circumferentially from the ring, and a second array of wings extending radially and circumferentially from the ring, wherein the wings in the first array are axially thinner than the wings in the second array, and the wings in the first array are upstream from the wings in the second array.
2. The method of claim 1 , wherein the gas turbine engine component comprises a blade outer air seal.
3. The method of claim 1 , further comprising expanding portions of the adjustment member against an annular case to initiate rotation.
4. The method of claim 1 , wherein the annular case defines a bore and the adjustment member is received within the bore.
5. The method of claim 1 , wherein slots in the adjustment member separate the plurality of wings from each other.
6. The method of claim 1 , wherein the first array of wings are axially sequentially aligned with the second array of wings.
7. The method of claim 1 , wherein the wings in the first array are insulated relative to the wings in the second array, and the wings in the second array are uninsulated relative to the wings in the first array.
8. A method of moving a gas turbine engine component, comprising:
in response to thermal variations, elongating wings in a first and a second array of wings to turn an adjustment member relative to an annular case, the adjustment member including the first array of wings extending radially and circumferentially from a ring, and the second array of wings extending radially and circumferentially from the ring, the wings in the first array axially spaced from the wings in the second array.
9. The method of claim 8 , wherein the adjustment member and the annular case have different rates of thermal expansion such that the adjustment member expands more quickly than the annular case in response to thermal energy.
10. The method of claim 8 , wherein the rings in the first array are axially thinner than the rings in the second array.
11. The method of claim 10 , wherein the gas turbine engine component is a blade outer air seal.
12. The method of claim 10 , wherein the gas turbine engine component is secured to the adjustment member and is radially inside both the annular case and the adjustment member.
13. The method of claim 10 , wherein the wings in the first and second arrays elongate in response to thermal variations, the elongating of the wings in the first array, the wings in the second array, or both turning the adjustment member or the annular case relative to the other of the adjustment member or the annular case.
14. The method of claim 10 , wherein the wings in the first array are axially thinner than the wings in the second array.
15. The method of claim 10 , wherein the rings in the first array are axially thinner than the rings in the second array.
16. The method of claim 10 , wherein the rings in the first array are axially upstream from the rings in the second array.
17. The method of claim 8 , wherein the rings in the first array are axially upstream from the rings in the second array.
18. A method of moving a gas turbine engine component, comprising:
turning a gas turbine engine component with an adjustment member or an annular case relative to the other of the adjustment member or the annular case in response to thermal energy, the adjustment member having a ring, a first array of wings, and a second array of wings that is axially spaced from the first array, the first and second array of wings extending radially and circumferentially from the ring.