Composite Wing Region Material Assignment for Flutter Cost Trade-off
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Solution Overview
Problem
Current wing designs using composite materials face challenges in achieving improved flutter characteristics while minimizing manufacturing costs, as the high elasticity type composite material is more expensive and typically used in larger areas than necessary.
Innovation Solution
The wing is divided into regions with the high strength type composite material used near the wing end and high elasticity type composite material used near the trailing edge, optimizing the use of materials to enhance flutter characteristics while reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the composite material of the high elasticity type is used on the wing end side to improve flutter characteristics, then the rigidity is strengthened and flutter characteristics are improved, but the manufacturing cost increases due to the higher price of the high elasticity type composite material
Solution Approach 1:
The patent applies local quality by dividing the wing surface into multiple regions and assigning different composite material types to different regions based on their specific functional requirements. The high elasticity type composite material is selectively applied only to regions where it provides the most benefit for flutter characteristics, while other regions use the more cost-effective high strength type composite material. This localized material assignment optimizes both performance and cost.
Solution Approach 2:
The patent segments the wing surface into a plurality of discrete regions, allowing independent material selection for each region. This segmentation enables precise control over where the expensive high elasticity material is used, separating the wing structure into zones with different material properties to achieve optimal flutter characteristics while minimizing overall material cost.
2Reliability
If the composite material of the high elasticity type is used in a larger area to improve flutter characteristics, then the rigidity is strengthened, but the manufacturing cost increases due to the higher price of the high elasticity type composite material
Solution Approach 1:
The patent applies local quality by dividing the wing surface into multiple regions and assigning different composite material types to different regions based on their specific functional requirements. The high elasticity type composite material is selectively applied only to regions where it provides the most benefit for flutter characteristics, while other regions use the more cost-effective high strength type composite material. This localized material assignment optimizes both performance and cost.
Solution Approach 2:
The patent applies partial action by using the high elasticity type composite material only in specific regions where it is most needed for flutter characteristics, rather than applying it uniformly across the entire wing surface. This partial application minimizes the quantity of expensive material used while still achieving the desired improvement in flutter characteristics.
Data Source
AI summary
A wing used for an aircraft includes a configuration member formed of a composite material. The configuration member is divided into a plurality of regions along a surface thereof. The plurality of regions include a first region formed of the composite material of a high strength type, and a second region formed of the composite material of a high elasticity type having higher rigidity than the high strength type. The first region includes any region closest to a wing end side out of the plurality of regions, and the second region includes a region closest to the wing end side and a trailing edge side out of the plurality of regions.