Aircraft Turbine Casing Molded Axial Abutments
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Solution Overview
Problem
The existing manufacturing process for turbine engine casings requires complex and costly operations to mount axial abutments, which increases the overall cost and time of production.
Innovation Solution
A method for manufacturing a turbine engine casing with integrated axial abutment means directly molded into the envelope during its production, eliminating the need for separate mounting operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If axial abutments are mounted separately on the envelope after manufacturing, then the envelope can be produced using standard composite manufacturing processes, but the manufacturing process becomes complex and costly due to preliminary boring and separate mounting operations
Solution Approach 1:
The patent merges the axial abutment features directly into the envelope manufacturing process by molding them as integral parts of the composite envelope structure. This eliminates the need for separate mounting operations, preliminary boring, and post-manufacturing assembly, thereby reducing manufacturing complexity while maintaining the required functional performance of the abutments
2Productivity
If axial abutments are mounted separately on the envelope, then the envelope structure can be simplified, but the manufacturing time and production cost increase due to additional mounting operations
Solution Approach 1:
The axial abutment features are created during the initial envelope manufacturing process rather than being added later. The mold includes provisions for forming the abutments as the composite material is laid up and cured, so that by the time the envelope is complete, the abutments are already in their final positions, eliminating time-consuming post-manufacturing operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies the manufacturing process, reduces costs, and improves the mechanical and aerodynamic performance of the casing by ensuring precise integration of the abutment means.
Implementation Method 1
a resin is injected into said cavity, and the resin is subsequently polymerised
Data Source
AI summary
A method for producing casing for an aircraft turbine engine includes a first step of manufacturing an annular shell having an axis A made of a composite material in a mold that includes an annular cavity that receives the preform. A resin is injected into the cavity and subsequently polymerized. During a second step, at least one axial abutment means is arranged inside the shell, and during a third step, the annular cartridge made of an abradable material is arranged inside the annular shell in contact with the axial abutment means. A fourth step includes bonding the annular cartridge to the first inner annular surface. The first and second steps are simultaneous, and the at least one axial abutment means is molded with the preform in the mold.