[미국특허]
Variable vane having body formed of first material and trunnion formed of second material
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-009/04
B23P-011/00
F01D-005/14
F01D-017/16
출원번호
US-0717928
(2012-12-18)
등록번호
US-9228438
(2016-01-05)
발명자
/ 주소
Dube, David P.
Feigleson, Steven J.
Hayford, Richard K.
출원인 / 주소
United Technologies Corporation
대리인 / 주소
Carlson, Gaskey & Olds, P.C.
인용정보
피인용 횟수 :
4인용 특허 :
10
초록
A variable vane includes a variable vane body that has an airfoil portion. The variable vane body is formed of a first material. A trunnion is attached at one end of the variable vane body. The trunnion includes a pivot formed of a second, different material.
대표청구항▼
1. A variable vane comprising: a variable vane body including an airfoil portion, the variable vane body being formed of a first material; anda trunnion attached at one end of the variable vane body, the trunnion including a pivot formed of a second, different material, wherein the first material ha
1. A variable vane comprising: a variable vane body including an airfoil portion, the variable vane body being formed of a first material; anda trunnion attached at one end of the variable vane body, the trunnion including a pivot formed of a second, different material, wherein the first material has a first density and the second material has a second density that is greater than the first density. 2. A variable vane comprising: a variable vane body including an airfoil portion, the variable vane body being formed of a first material; anda trunnion attached at one end of the variable vane body, the trunnion including a pivot formed a second, different material, wherein the variable vane body includes a first anti-rotation member and the trunnion includes a second anti-rotation member that interlocks with the first anti-rotation member such that relative rotational movement between the trunnion and the variable vane body is limited. 3. The variable vane as recited in claim 2, wherein the first material is selected from the group consisting of aluminum, aluminum-based alloys, magnesium, magnesium-based alloys, polymers, polymer-matrix composites and combinations thereof, and the second material is selected from the group consisting of nickel, nickel-based alloys, titanium, titanium-based alloys, steel, cobalt, cobalt-based alloys and combinations thereof. 4. The variable vane as recited in claim 2, wherein the first material is an aluminum-based material and the second material is selected from the group consisting of nickel, nickel-based alloys, titanium, titanium-based alloys, steel, cobalt, cobalt-based alloys and combinations thereof. 5. The variable vane as recited in claim 2, wherein the first material is a polymer-matrix composite and a second material is selected from the group consisting of nickel, nickel-based alloys, titanium, titanium-based alloys, steel, cobalt, cobalt-based alloys and combinations thereof. 6. The variable vane as recited in claim 2, wherein the trunnion includes a flange connected to the pivot, and the flange is adhesively bonded to the variable vane body. 7. The variable vane as recited in claim 2, wherein the first material has a first strength and a second material has a second strength that is greater than first strength. 8. The variable vane as recited in claim 2, wherein one of the first anti-rotation member or the second anti-rotation member includes an elongated ridge and the other of the first anti-rotation member or the second anti-rotation member includes a channel. 9. A variable vane comprising: a variable vane body including an airfoil portion, the variable vane body being formed of a first material; anda trunnion attached at one end of the variable vane body, the trunnion including a pivot formed of a second, diiferent material, wherein the variable vane body includes a first alignment member and the trunnion includes a second alignment member inter-fit with the first alignment member such that a central axis of the variable vane body aligns with a central axis of the pivot. 10. The variable vane as recited in claim 9, wherein one of the first alignment member or the second alignment member is a pin and the other of the first alignment member or the second alignment member is a hole. 11. The variable vane as recited in claim 2, wherein the pivot includes a plurality of flat bearing surfaces. 12. The variable vane as recited in claim 2, wherein the trunnion is adhesively bonded to the variable vane body. 13. The variable vane as recited in claim 2, wherein the trunnion is welded or brazed to the variable vane body. 14. A turbomachine comprising: optionally, a fan;a compressor section including a plurality of variable vanes, each of the plurality of variable vanes including a variable vane body having an airfoil portion, and a trunnion attached at one end of the variable vane body, the variable vane body being formed of a first material and the trunnion including a pivot formed of a second, different material, wherein the variable vane body includes a first anti-rotation member and the trunnion includes a second anti-rotation member that interlocks with first anti-rotation member such that relative rotational movement between the trunnion and the variable vane body is limited;a combustor in fluid communication with the compressor section; anda turbine section in fluid communication with the combustor. 15. The turbomachine as recited in claim 14, wherein the first material has a first density and the second material has a second density that is greater than the first density. 16. The turbomachine as recited in claim 14, wherein the first material is selected from the group consisting of aluminum, aluminum-based alloys, magnesium, magnesium-based alloys, polymers, polymer-matrix composites and combinations thereof, and a second material selected from the group consisting of nickel, nickel-based alloys, titanium, titanium-based alloys, steel, cobalt, cobalt-based alloys and combinations thereof. 17. A method of assembling a variable vane, the method comprising: providing a variable vane body including an airfoil portion, the variable vane body being formed of a first material and including a first anti-rotation member;providing a trunnion including a pivot formed of a second, different material and including a second anti-rotation member; andattaching the trunnion at one end of the variable vane body by interlocking the first anti-rotation member and the second anti-rotation member such that relative rotational movement between the trunnion and the variable vane body is limited. 18. The method as recited in claim 17, wherein the attaching includes adhesively bonding, welding or brazing the trunnion to the one end of the variable vane body.
Grant, Carl; Douglas, David Curr; Payling, Stephen Rex; Vota, James, Apparatus and method for damping vibrations between a compressor stator vane and a casing of a gas turbine engine.
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