Aerospace Flow Body Self-Aligning Hinge Mechanism
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Solution Overview
Problem
Aerospace vehicle control surface systems with swept hinge lines face clearance issues and aerodynamic inefficiencies due to non-parallel rotation planes, leading to increased drag and reduced lift benefits.
Innovation Solution
The system includes a first and second flow body with self-aligning mechanisms that allow the second flow body to rotate about a hinge line and non-parallel hinge axes, maintaining consistent lateral distances and reducing clearance with adjacent structures, enhancing aerodynamic efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a swept hinge line is used for the flap, then the flap can be positioned on a swept wing, but clearance problems occur between the flap and surrounding wing structure
Solution Approach 1:
The invention introduces a second rotation axis in addition to the traditional single hinge axis. The flap can rotate about the swept hinge line and simultaneously accommodate rotation about a second axis that is non-parallel to the hinge line, enabling the flap to follow a three-dimensional conical path rather than being constrained to a single plane. This dimensional change resolves the clearance problem by allowing the lateral edges to trace a conical surface that maintains appropriate spacing from adjacent wing structures throughout the range of motion.
2Ease of operation
If a swept hinge line is used for the flap, then the flap can rotate to extended position, but gaps are created between laterally adjacent control surfaces
Solution Approach 1:
By enabling rotation about two non-parallel axes rather than a single hinge line, the invention allows the flap to achieve its extended position while maintaining proper alignment with adjacent control surfaces. The conical motion path defined by the dual-axis system eliminates excessive gaps between laterally adjacent surfaces, reducing aerodynamic inefficiencies such as flow separation and turbulence that would otherwise increase energy loss.
3Shape
If the lateral edges of the flap rotate in a plane non-parallel to the longitudinal axis, then the swept hinge line configuration is achieved, but clearance problems arise with surrounding structure
Solution Approach 1:
The invention transitions from a static single-plane rotation to a dynamic dual-axis rotation system. The flap is configured to rotate about a swept hinge line while simultaneously accommodating rotation about a second axis, creating a conical motion path. This dynamic configuration allows the lateral edges to maintain optimal clearance distances from surrounding structures throughout the entire range of motion, rather than being constrained to a fixed rotation plane that would cause clearance violations at certain angles.
Data Source
AI summary
Flow body systems and associated methods, including aerospace vehicle control surface systems are disclosed herein. One aspect of the invention is directed toward an aerospace vehicle system that includes a first flow body that can be coupleable to an aerospace vehicle. The system can further included a second flow body that includes a chord line and can be rotatably coupled to the first flow body at a hinge point positioned away from the chord line. The hinge point can have a hinge axis. The hinge line can extend through the hinge point, but being nonparallel with the hinge axis. The system can still further include at least one self-aligning mechanism coupled between the first flow body and the second flow body. The at least one self-aligning mechanism can be positioned to allow the second flow body to rotate about the hinge line and the hinge axis.