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3. Cold compressor rotors
The "cold" compressors of turbojet engines, which include the low-pressure compressor and the upstream part of the high-pressure compressor, are made up of a set of successive discs, mechanically or metallurgically interconnected and fitted with blades, whose function is to compress the air to be burned in the combustion chamber.
3.1 Choice of materials
The external constraints are as follows:
virtually finished machined parts, which means using processes that generate low welding shrinkage;
parts with certified service life, working in low-cycle fatigue and requiring proven non-propagation of potential defects.
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Cold compressor rotors
Bibliography
References
Standardization
- Aerospace series – Welded and brazed assemblies for aerospace construction – Weldability and solderability of materials – Part 10: General information. - NF L06-380-10 - 2-03
- Aerospace series – Welded and brazed assemblies for aerospace construction – Weldability and solderability of materials – Part 20: homogeneous assemblies of aluminum and aluminum alloys. - NF L06-380-20 - 2-03
- Aerospace series – Welded...
Tuboreactor manufacturers
(non-exhaustive list)
SNECMA (SAFRAN Group) http://www.snecma.com
General Electric http://www.ge.com
...
Research centers
(non-exhaustive list)
Edison Welding Institute (EWI) http://www.ewi.org
Welding Institute (IS Group) http://www.isgroupe.com
TWI (The Welding Institute) http://www.twi.co.uk
...Standards bodies
American Welding Society (AWS) http://www.aws.org
Bureau de normalisation de l'aéronautique et de l'espace (BNAE) (French Aerospace Standardization Bureau) http://www.bnae.asso.fr
European Association of aerospace industries (AECMA)...
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