EP0266954A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Twisted hollow airfoil with non-twisted internal support ribs
Assignee: Turbine Engine Components Textron Inc
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Filing: 1987-10-27
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Granted: —
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Expires: 2007-10-27
Abstract
Abstract A transversely twisted hollow airfoil member is provided by diffusion bonding together airfoil components each having a skin or shell (32) in the form of a partial airfoil twisted transversely along its length (L) and one or more internal support ribs (50, 52, 54) having bonding surfaces (50a, 52a, 54a) which are not twisted transversely along their length. Each support rib extends substantially normal to a bonding plane (T) defined by bonding surfaces on the supporting ribs. As a result of the rib and bonding surface orientation, the airfoil components can be forged and the components bonded together at elevated temperature in short times between dies movable by high pressure toward one another normal to the bonding surfaces.
Inventors
- 👤 Gordon S. Doble
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; B; B23; B23K; B23K20/00; B23K20/02; B23P; B23P15/00; B23P15/04; F01D5/147; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
45 words
An airfoil component having a skin in the form of a partial airfoil twisted transversely along its longitudinal axis and having at least one support rib extending from the skin and terminating in a bonding surface that is not twisted transversely along the longitudinal axis.
Claim 2
Dependent Claim
45 words
An airfoil component having a skin in the form of a partial airfoil twisted transversely along its longitudinal axis and having at least one support rib extending from the skin and terminating in a bonding surface that is not twisted transversely along the longitudinal axis.
Claim 3
Dependent Claim
42 words
An airfoil component according to claim 1, wherein axes normal to the bonding surface alongs its length are substantially parallel with one another when viewed along the longitudinal axis of the airfoil at the same given transverse position on the bonding surface.
Claim 4
Dependent Claim
32 words
The airfoil component of claim 1 or claim 2 wherein said at least one support rib extends at other than a normal orientation relative to the skin substantially along the rib length.
Claim 5
Dependent Claim
49 words
The airfoil component of claim 1 or 2 wherein said at least one rib includes at least one sidewall extending from the skin at other than a normal orientation thereto substantially along the length of the rib sidewall and at a substantially normal orientation relative to the bonding surface.
Claim 6
Dependent Claim
11 words
The airfoil component of claim 1 or 2 which is forged.
Claim 7
Dependent Claim
102 words
An airfoil component having a skin in the form of a partial airfoil twisted transversely along its longitudinal axis and having at least one support rib terminating in a bonding surface defining a bonding plane, said support rib extending from the skin at other than a normal orientation to the skin substantially along the length of the support rib and at a substantially normal orientation to the bonding plane, said support rib extending from the skin at other than a normal orientation to the skin substantially along the length of the support rib and a substantially normal orientation to the bonding plane.
Claim 8
Dependent Claim
102 words
An airfoil component having a skin in the form of a partial airfoil twisted transversely along its longitudinal axis and having at least one support rib terminating in a bonding surface defining a bonding plane, said support rib extending from the skin at other than a normal orientation to the skin substantially along the length of the support rib and at a substantially normal orientation to the bonding plane, said support rib extending from the skin at other than a normal orientation to the skin substantially along the length of the support rib and a substantially normal orientation to the bonding plane.
Claim 9
Dependent Claim
94 words
An airfoil member twisted transversely along its longitudinal axis and having a first outer skin, second outer skin and at least one support rib extending between the first and second outer skins and along the longitudinal axis, said at least one support rib having bonded surfaces between the first and second skins that are not twisted transversely along the longitudinal axis such that axes normal to the bonded surfaces are substantially parallel with one another when viewed along the longitudinal axis of the airfoil at the same given transverse position as the bonding surface.
Claim 10
Dependent Claim
94 words
An airfoil member twisted transversely along its longitudinal axis and having a first outer skin, second outer skin and at least one support rib extending between the first and second outer skins and along the longitudinal axis, said at least one support rib having bonded surfaces between the first and second skins that are not twisted transversely along the longitudinal axis such that axes normal to the bonded surfaces are substantially parallel with one another when viewed along the longitudinal axis of the airfoil at the same given transverse position as the bonding surface.
Claim 11
Dependent Claim
29 words
The airfoil member of claim 7 wherein said at least one rib comprises extending integrally from the first skin and an opposed rib extending integrally from the second skin.
Claim 12
Dependent Claim
21 words
The airfoil member of claim 8 wherein the first skin and associated rib and second skin and associated rib are forged.
Claim 13
Dependent Claim
77 words
An airfoil member twisted transversely about its longitudinal axis and having a first outer skin, second outer skin and at least one support rib between the first and second skins, said support rib having mating opposed bonded surfaces defining a bonding plane, said support rib extending between the first and second skins at other than a normal orientation thereto substantially along the length of the support rib and at a substantially normal orientation to the bonding plane.
Claim 14
Dependent Claim
77 words
An airfoil member twisted transversely about its longitudinal axis and having a first outer skin, second outer skin and at least one support rib between the first and second skins, said support rib having mating opposed bonded surfaces defining a bonding plane, said support rib extending between the first and second skins at other than a normal orientation thereto substantially along the length of the support rib and at a substantially normal orientation to the bonding plane.
Claim 15
Dependent Claim
31 words
The airfoil member of claim 10 wherein said at least one rib comprises one rib extending integrally from the first skin and an opposed rib extending integrally from the second skin.
Claim 16
Dependent Claim
21 words
The airfoil member of claim 11 wherein the first skin and associated rib and second skin and associated rib are forged.
Claim 17
Dependent Claim
133 words
In a method for making an airfoil member by bonding first and second airfoil skins together with opposed mating surfaces of an internal support rib between the first and second outer skins bonded together, the improvement comprising forming the internal support rib to extend at other than a normal orientation to the first and second skins substantially along the length of the support rib and substantially normal to the mating surfaces, mating the first and second airfoil skins with the mating surfaces abutted and applying force to the first and second skins to apply bonding pressure across the mating surfaces in a direction substantially normal thereto at a given transverse position on the mating surfaces to force them together while heating the skins and support rib to effect bonding between the mating surfaces.
Claim 18
Dependent Claim
133 words
In a method for making an airfoil member by bonding first and second airfoil skins together with opposed mating surfaces of an internal support rib between the first and second outer skins bonded together, the improvement comprising forming the internal support rib to extend at other than a normal orientation to the first and second skins substantially along the length of the support rib and substantially normal to the mating surfaces, mating the first and second airfoil skins with the mating surfaces abutted and applying force to the first and second skins to apply bonding pressure across the mating surfaces in a direction substantially normal thereto at a given transverse position on the mating surfaces to force them together while heating the skins and support rib to effect bonding between the mating surfaces.
Claim 19
Dependent Claim
48 words
The method of claim 13 wherein a portion of the internal support rib is formed on the first skin and another portion is formed on the second skin such that the portions are in opposition with the mating surfaces abutted when the first and second skins are mated.
Claim 20
Dependent Claim
19 words
The method of claim 13 wherein said portion of the support rib on the first skin is forged thereon.
Claim 21
Dependent Claim
16 words
The method of claim 15 wherein said another portion on the second skin is forged thereon.
Claim 22
Independent Claim
19 words
The method of claims 13 wherein the bonding pressure and temperature are sufficient to diffusion bond the mating surfaces.
References Cited (Backward Citations)
No citation records indexed.
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