Golf Ball Dimple Cross-Sectional Depth Ratios
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Solution Overview
Problem
Current golf balls do not adequately enhance aerodynamic performance, which limits their flight distance and stability, despite various dimple shape configurations being explored.
Innovation Solution
The golf ball features dimples with a specific cross-sectional shape divided into regions, where the average depths in each region satisfy particular ratios, reducing air resistance and improving aerodynamic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional circularly arcuate dimples are used, then manufacturing is simple, but aerodynamic performance is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the cross-sectional shape parameters of dimples from conventional circular arcuate shapes to specific non-circular shapes with controlled depth ratios. The invention defines specific depth ratio ranges (d1/d2: 0.5-2.0, d2/d3: 0.5-2.0, d3/d4: 0.5-2.0, d4/d5: 0.5-2.0) to optimize aerodynamic performance while maintaining manufacturing feasibility through mold design.
2Length of moving object
If dimple depth is increased to improve aerodynamic performance, then flight distance improves, but air resistance may increase
Solution Approach 1:
The patent applies local quality by creating different depth zones within the dimple cross-section. The dimple is divided into five depth regions (d1-d5 from surface to deepest point) with specific depth ratio controls, creating varying local depths that optimize airflow attachment in different zones. This localized depth variation reduces turbulent wake while maintaining low pressure drag, achieving both reduced air resistance and extended flight distance.
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 configuration enhances the aerodynamic properties of the golf ball, resulting in increased flight distance and stability, particularly in the carry distance, by optimizing the dimple shape and distribution.
Implementation Method 1
reduce the air resistance during flight by means of dimples formed on the ball surface and thus improve the aerodynamic performance
Data Source
AI summary
The invention provides a golf ball with a surface having a plurality of dimples formed thereon. Some or all of the dimples on the ball surface have a cross-sectional shape in which, letting a straight line passing through any one edge of the dimple and a foot of a perpendicular (pedal) dropped from an imaginary plane defined by a peripheral edge of the dimple to a deepest point of the dimple serve as a reference line, and establishing a plurality of specific regions on the reference line from the dimple edge as 0% to the pedal as 100%, the average depths of the dimple from the reference line in the respective established regions satisfy specific conditions. By reducing the air resistance during flight and thus enhancing the aerodynamic performance, this golf ball achieves a higher trajectory, enabling the ball to travel further.