Aircraft Vortex Generator Mounting System for Drag Reduction
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Solution Overview
Problem
The existing aerodynamic aircraft walls with vortex generators suffer from unwanted drag due to the projection of the mount edge, which disrupts air flow and affects aerodynamic performance.
Innovation Solution
A connecting system comprising a support with a base pressed against the internal surface and a head that fits into the aerodynamic wall, using flush-fitting fasteners and seals to minimize drag, while maintaining assembly efficiency and mass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional mount with a projecting forward edge is used to connect the vortex generator to the aerodynamic wall, then the vortex generator can be securely mounted, but the projecting edge disrupts air flow and generates unwanted drag
Solution Approach 1:
The harmful forward edge of the traditional mount is completely removed. The invention extracts only the essential mounting function while eliminating the drag-generating portion, resulting in a support that connects the vortex generator without any projecting elements into the airflow path.
Solution Approach 2:
The mounting structure transitions from a protruding three-dimensional mount into the airflow to a flush-mounted support where the head is recessed into the aerodynamic wall. This dimensional change moves the mounting function to a different spatial arrangement that no longer interferes with the two-dimensional airflow over the surface.
2Object-generated harmful factors
If a flush-fitting connecting system is used to reduce drag, then aerodynamic performance is improved, but assembly complexity may increase
Solution Approach 1:
The connecting system is segmented into distinct functional components: a support with base and head, multiple fasteners for different mounting stages, and sealing elements. This segmentation allows each component to perform its specific function efficiently while maintaining overall system manageability.
Solution Approach 2:
The support head is nested into a recess in the aerodynamic wall, creating a flush fit. The vortex generator is then nested onto the support, with the active wall fitting into the head. This nested arrangement achieves the flush-fitting aerodynamic profile without requiring excessively complex external structures.
3Object-generated harmful factors
If the mount is redesigned to eliminate the forward edge, then drag is reduced, but the mounting structure becomes more complex
Solution Approach 1:
The support structure performs multiple functions: it provides mechanical connection between the vortex generator and aerodynamic wall, creates a flush-fitting aerodynamic profile, provides sealing surfaces for weatherproofing, and establishes precise positioning. This multi-functionality reduces the need for separate components that would otherwise be required.
Solution Approach 2:
The mounting and sealing functions are merged into a single integrated support structure. The base and head of the support work together to provide both mechanical attachment and aerodynamic flush-fitting, while sealing elements are integrated into the same assembly process, combining multiple functions into one cohesive system.
Data Source
AI summary
An aerodynamic aircraft wall has external and internal surfaces and is equipped with at least one vortex generator. The vortex generator has at least one active wall projecting with respect to the external surface of the aerodynamic wall. A connecting system connects the vortex generator to the aerodynamic wall. The connecting system includes at least one support having a base pressed firmly against the internal surface of the aerodynamic wall and a head which passes through the aerodynamic wall and collaborates with the active wall, at least one first fastener connecting the base of the support and the aerodynamic wall, at least one second fastener connecting the head of the support and the active wall.