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US 9,435,207 B2Granted
Blade comprising pre-wired sections
AssigneeMTU Aero Engines AG
InventorsSergio Elorza Gomez, Peter Eibelshaeuser
Life of this patent
Estimating the term…
Abstract
A blade for a blade row of a turbomachine having wired sections, in particular a blade of a compressor rotor blade, as well as a method for wiring sections of such a blade, is disclosed. Sections of a blade are wired in such a way that a first central component of a second section is selected according to at least one central component of a first section.
Claims2
A method for forming a blade (1) for a blade row of a turbomachine, comprising:
- selecting a first central component (ΘCG(i+1)) of a second section ((i+1)) of the blade according to at least one central component (ΘCG(i), xCG(i), rCG(i)) of a first section ((i)) of the blade;
- wherein the first central component (ΘCG(i+1)) of the second section ((i+1)) is selected as a first central component in a peripheral direction essentially according to:
- Θ
- CG
-
- (
- i
- +
- 1
- )
- =
- Θ
- CG
-
- (
- i
- )
- +
- Arctan
-
- ⌊
- A
- ·
- (
- x
- CG
-
- (
- i
- +
- 1
- )
- -
- x
- CG
-
- (
- i
- )
- )
- ·
- tan
-
-
- B
- ⌋
- +
- C
- with
- A
- ∈
- {
- 2
- (
- r
- CG
-
- (
- i
- +
- 1
- )
- +
- R
- CG
-
- (
- i
- )
- )
- ,
- 1
- r
- CG
-
- (
- i
- )
- ,
- 1
- r
- CG
-
- (
- i
- +
- 1
- )
- }
- ;
- B
- ∈
- {
- β
- (
- i
- +
- 1
- )
- +
- β
- (
- i
- )
- 2
- ,
- β
- (
- i
- )
- ,
- β
- (
- i
- +
- 1
- )
- }
- ;
- C
- ∈
- {
- Arcsin
-
- [
- (
- r
- CG
-
- (
- i
- +
- 1
- )
- -
- r
- CG
-
- (
- 1
- )
- )
- (
- r
- CG
-
- (
- i
- +
- 1
- )
- )
- ·
- sin
-
- (
- Θ
- lean
- )
- ]
- ,
- 0
- }
- where:
- (i) is a variable of the first section;
- (i+1) is a variable of the second section;
- ΘCG is a central component of a section in the peripheral direction;
- xCG is a central component of a section in an axial direction;
- rCG is a central component of a section in a radial direction;
- β is a graduated angle of a section;
- and
- Θlean is a peripheral incline;
- and
- forming the blade by wiring the first section and the second section of the blade.
171 more elements
Dependencies are inferred from the claim text.