Aerodynamic Wing Curved Load Transfer Line
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Solution Overview
Problem
Aerodynamic wings face challenges in transferring high uplift forces efficiently while minimizing weight, as existing designs require strong ribs and multiple fastening lines, which increase weight and stress concentrations.
Innovation Solution
The implementation of a curved reinforcing load transfer line that connects multiple fastening lines to ribs, distributing loads more evenly and reducing stress peaks, allowing for lighter rib materials and potentially omitting a lower deck without compromising aerodynamic efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If multiple fastening lines are used to transfer uplift forces, then the load distribution is improved, but the weight of the wing increases
Solution Approach 1:
A load transfer line is introduced as an intermediary element connecting multiple fastening lines to the rib. This load transfer line distributes the uplift forces from multiple fastening lines along the rib structure, reducing stress concentrations at individual attachment points while allowing the use of lighter rib materials
Solution Approach 2:
The load transfer line is configured with a curved path following the contour of the rib. This curved geometry optimizes the distribution of forces along the rib, allowing for more efficient load transfer and reducing the structural requirements of the rib itself
2Strength
If high strength ribs are used to transfer uplift forces, then the structural strength is improved, but the weight of the wing increases
Solution Approach 1:
The load transfer line acts as a mediator that distributes forces along the rib, reducing the peak stresses that the rib must withstand. This allows the rib to be constructed from lighter materials or with reduced cross-section while still maintaining adequate strength
Solution Approach 2:
The invention changes the stress distribution parameters along the rib by introducing the load transfer line. This transforms the stress profile from concentrated peaks to a more distributed pattern, allowing optimization of rib material properties and dimensions
3Strength
If reinforcement patches are added to ribs at fastening points, then the local strength is improved, but the weight of the wing increases
Solution Approach 1:
The load transfer line serves as an intermediary that distributes forces along the rib rather than concentrating them at discrete fastening points. This eliminates the need for reinforcement patches at attachment points, as the stress concentrations are avoided through proper force distribution
Solution Approach 2:
The invention extracts or removes the need for reinforcement patches by fundamentally changing how forces are distributed. Instead of adding strengthening elements at critical points, the load transfer line prevents the formation of stress concentrations in the first place
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 solution significantly reduces the weight and strength requirements of the aerodynamic wing by optimizing stress distribution, minimizing stress concentrations, and enabling the design of an upper-deck-only configuration without sacrificing efficiency.
Implementation Method 1
The uplift force is generated by a low pressure acting onto the upper deck and a high pressure acting onto the lower deck
Implementation Method 2
the at least two line attachment points are connected to each other by a reinforcing load transfer line extending from the line attachment point of the first one of the two fastening lines to the line attachment point of the second one of the two fastening lines
Data Source
AI summary
The invention relates to an aerodynamic wing, including an upper deck extending in operation in a longitudinal direction and in a transversal direction; wherein the upper deck is shaped and arranged to produce a vertical lifting force which is oriented perpendicular to the longitudinal and the transversal direction when the aerodynamic wing is exposed to a wind flow in a direction oriented parallel to the longitudinal direction; wherein a plurality of ribs are connected to the upper deck, said ribs lying in a plane parallel to the direction of the vertical lifting force and the direction of the wind flow; the aerodynamic wing being coupled to a base platform arranged below the wing in service via a plurality of fastening lines, whereby the fastening lines are secured to the ribs of the wing, at least two fastening lines are secured to one rib at two line attachment points arranged at a distance from each other in the longitudinal direction; wherein the at least two line attachment points are connected to each other by a reinforcing load transfer line extending from the line attachment point of the first one of the two fastening lines to the line attachment point of the second one of the two fastening lines; whereby the reinforcing load transfer line is attached to the respective rib along substantially the whole length of the load transfer line and follows a curved path along the rib.