US3758232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade assembly for gas turbine engines
Assignee: UK Secretary of State for Defence
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Filing: 1971-04-23
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Granted: 1973-09-11
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Expires: 1991-04-23
Abstract
Abstract A blade assembly for a gas turbine engine comprising an annulus of blades in which a blade row is formed from an annular array of pieces, each comprising a blade flank, an interconnecting portion, and an opposing flank of an adjacent blade. The pieces are made from fiber reinforced material and filament winding techniques are utilized in making the individual pieces. The blade assembly may be used for compressor or turbine rotors or stators.
Inventors
- 👤 J Wallett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:54
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/28; F01D5/282
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
156 words
A blade assembly of a plurality of blades for a gas turbine engine, said blade assembly comprising: a plurality of individual blade pieces, each of said blade pieces being separately formed into an integral structural unit, each of said blade pieces being fiber reinforced and including a first aerodynamic flank portion of one blade of the assembly, a second aerodynamic flank portion of an adjacent blade of the assembly and opposing saId first aerodynamic portion, and at least one interconnecting portion common to said first and second flank portions of an individual piece, means to which the interconnecting portions of said fiber reinforced blade pieces are connected to form an annulus of blades of the blade assembly with the first aerodynamic flank portion of one blade piece being secured in contiguous abutting relationship with the second aerodynamic flank portion of the next adjacent blade piece to form a complete composite blade of said plurality of blades.
Claim 2
Dependent Claim
156 words
A blade assembly of a plurality of blades for a gas turbine engine, said blade assembly comprising: a plurality of individual blade pieces, each of said blade pieces being separately formed into an integral structural unit, each of said blade pieces being fiber reinforced and including a first aerodynamic flank portion of one blade of the assembly, a second aerodynamic flank portion of an adjacent blade of the assembly and opposing saId first aerodynamic portion, and at least one interconnecting portion common to said first and second flank portions of an individual piece, means to which the interconnecting portions of said fiber reinforced blade pieces are connected to form an annulus of blades of the blade assembly with the first aerodynamic flank portion of one blade piece being secured in contiguous abutting relationship with the second aerodynamic flank portion of the next adjacent blade piece to form a complete composite blade of said plurality of blades.
Claim 3
Dependent Claim
74 words
A blade assembly as claimed in claim 1 in which said interconnecting portion defines a blade root portion and in which said means includes a disc having a plurality of root receiving means on its periphery, said blade disc having projections thereon and beam pieces engaging said projections, said beam pieces extending across the radially outside of said interconnecting portions of said pieces, said beam pieces retaining said first mentioned pieces to said disc.
Claim 4
Dependent Claim
30 words
A blade assembly as claimed in claim 2 including a pair of circumferential rims defining said projections, said beam pieces being held against the radially inner surfaces of said rims.
Claim 5
Dependent Claim
27 words
A blade assembly as claimed in claim 1 in which said reinforced fiber blade pieces are secured to said root receiving means of said disk by gluing.
References Cited (Backward Citations)
FR969413A
Cited
FR1040697A
Cited
FR1121516A
Cited
US2989285A
Cited
US3532438A
Cited
US3549444A
Cited
US3501090A
Cited
US3616508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |