Hydrofoil Spoon Lure Geometry for Lift and Roll Stability
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Solution Overview
Problem
Existing fishing lures lack effective mechanisms to maintain stability and generate hydrodynamic lift for consistent upward movement through water, leading to inefficient fishing performance.
Innovation Solution
A fishing lure design featuring a convex and concave shape with an offset central section and S-shaped configuration, creating hydrodynamic lift and roll stability, allowing the lure to rise and plunge iteratively through water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional spoon-shaped fishing lure is used, then the lure can be manufactured simply with uniform thickness, but it lacks effective mechanisms to maintain stability and generate hydrodynamic lift
Solution Approach 1:
The fishing lure employs an asymmetric hydrofoil cross-section with a convex first side and a concave second side, where the concave side creates a low-pressure zone that generates hydrodynamic lift. This asymmetric geometry is offset from the longitudinal axis, creating both lift and roll stability without requiring complex additional components.
Solution Approach 2:
The fishing lure incorporates a curved or arcuate longitudinal profile with specific radius of curvature relationships. The curvature of the hydrofoil sections and the overall arcuate shape work together to optimize water flow patterns, enhancing both hydrodynamic lift generation and roll stability while maintaining a relatively simple manufactured form.
2Productivity
If a spoon with uniform thickness is used, then manufacturing is simple, but the lure cannot generate consistent upward movement through water
Solution Approach 1:
The asymmetric hydrofoil cross-section with offset from the longitudinal axis creates differential pressure zones that generate consistent hydrodynamic lift. The convex and concave surfaces are positioned asymmetrically to optimize water flow separation and pressure distribution, enabling reliable upward movement that enhances fishing effectiveness.
Solution Approach 2:
Different sections of the fishing lure have specialized local geometries: the forward section has a specific curvature radius, the central section has an offset hydrofoil configuration, and the trailing section has a different curvature. Each local region is optimized for its specific function in generating lift and stability, improving overall performance without requiring complete structural redesign.
3Force
If the lure settles according to gravity during jigging, then the fishing method is simple, but the lure lacks consistent upward movement capability
Solution Approach 1:
The fishing lure utilizes hydrodynamic principles by shaping the body as a hydrofoil that generates lift forces when pulled through water. The convex and concave surfaces create pressure differentials in the water flow, generating upward hydrodynamic lift that counteracts gravity and enables the lure to rise and plunge iteratively, adding complexity to the force profile.
Solution Approach 2:
The asymmetric offset of the hydrofoil section from the longitudinal axis creates both lift and a rolling moment that stabilizes the lure's orientation. This asymmetric configuration ensures that the lure maintains a consistent angular orientation in the water, maximizing the effectiveness of hydrodynamic lift generation during retrieval.
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
The design enhances stability and generates hydrodynamic lift, resulting in consistent upward movement and increased fishing effectiveness by maintaining a stable angular orientation and utilizing water flow for upward propulsion.
Implementation Method 1
The fishing lure spoon body is configured for creating hydrodynamic lift when the fishing lure spoon body is pulled through the water
Implementation Method 2
the longitudinally flat central section being offset from the relatively flat forward section is configured for causing the longitudinally flat central section to face downward due to gravity as the fishing lure spoon body is pulled through the water
Data Source
AI summary
A fishing lure includes a fishing lure spoon body. The spoon body includes a relatively flat forward section including an attachment feature capable of being secured to a fishing line. The spoon body further includes a longitudinally flat central section offset from the relatively flat forward section. The spoon body further includes an S-shaped section connected to and transitioning between the relatively flat forward section and the longitudinally flat central section. The spoon body further includes a trailing edge portion curving toward the relatively flat forward section. The fishing lure further includes at least one hook. The spoon body is convex upon a first side and concave upon a second side. The spoon body is configured for creating hydrodynamic lift when the spoon body is pulled through the water.