Additive Manufacturing Thrust Reverser Cascade
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Solution Overview
Problem
Contemporary thrust reverser systems in aircraft engines face challenges in achieving optimal aerodynamics, strength, and cost-effectiveness due to limitations in materials and manufacturing processes, such as cast aluminum or labor-intensive composite methods.
Innovation Solution
A thrust reverser cascade comprising a frame and a body formed by multiple polymer resin layers using additive manufacturing, where the resin layers are coupled to the frame to provide structural integrity and aerodynamic functionality, allowing for optimized airflow and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cast aluminum or graphite/resin composite using resin transfer molding or labor intensive lay-up processes are used, then structural strength is achieved, but manufacturing complexity and labor intensity increase
Solution Approach 1:
The patent replaces traditional mechanical manufacturing processes (resin transfer molding, hand lay-up) with additive manufacturing technology. This substitution enables automated layer-by-layer construction of the cascade structure, significantly reducing labor intensity and manufacturing complexity while maintaining structural strength through precise material deposition and controlled bonding processes.
Solution Approach 2:
The invention changes the manufacturing approach from subtractive or molding processes to additive construction. By depositing material layer-by-layer with controlled parameters (layer thickness, deposition rate, bonding temperature), the process achieves complex geometries without the tooling requirements of traditional methods, reducing manufacturing complexity while ensuring structural integrity.
2Reliability
If traditional manufacturing processes are used, then structural integrity is achieved, but production time and labor costs increase
Solution Approach 1:
The patent replaces time-consuming manual lay-up and curing processes with automated additive manufacturing. The robotic or automated deposition system constructs the cascade structure continuously layer-by-layer, eliminating labor-intensive steps and significantly reducing production time while maintaining structural integrity through controlled material placement and in-situ bonding.
Solution Approach 2:
The additive manufacturing process performs preliminary structuring actions during construction itself. Support features, mounting interfaces, and aerodynamic surfaces are built in during the layer-by-layer process rather than requiring post-manufacturing assembly or machining, reducing total production time while ensuring structural integrity is built-in from the start.
3Adaptability or versatility
If expensive tool changes are made for design iterations, then design adaptability is achieved, but manufacturing cost increases
Solution Approach 1:
The additive manufacturing system serves multiple design iterations using the same equipment. By changing only the digital model parameters rather than physical tooling, the same additive manufacturing apparatus can produce different cascade designs, enabling rapid design iteration without expensive tool changes while maintaining manufacturing cost-effectiveness.
Solution Approach 2:
The invention enables design adaptability through parameter changes in the digital manufacturing model rather than physical tooling changes. By modifying CAD parameters, layer patterns, or material deposition settings, different cascade geometries are achieved using the same additive manufacturing hardware, eliminating tool change costs while maintaining full design flexibility.
Data Source
AI summary
A thrust reverser cascade having a frame and a body. The body comprises multiple layers formed by an additive manufacturing process where at least one of the layers is coupled to the frame.