Filament Wound Training Projectile for Racket Sports
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Solution Overview
Problem
Racket sports, such as badminton, pose challenges for solo practice due to the need for specialized equipment and environments, leading to ineffective training without a partner or specific setup, and existing projectiles like shuttlecocks and tennis balls are not suitable for safe and effective practice in confined spaces.
Innovation Solution
A training projectile with optimal baffling and rebounding characteristics, comprising a combination of dense bounce elements and less dense baffling elements, fabricated using a method involving winding, bundling, and cinching of filaments to create a ball that can be safely used on any hard surface without damage, providing a compact and durable solution for hand-eye coordination practice.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional shuttlecock is used for wall practice, then badminton skills can be practiced, but it causes damage to walls and produces undesirable noise
Solution Approach 1:
The invention changes the physical parameters of the projectile by creating a soft, compressible ball with specific elasticity and damping characteristics. This allows the projectile to deform upon impact, reducing wall damage and noise while maintaining useful rebound properties for practice
Solution Approach 2:
The projectile is constructed as a composite object with an outer shell and internal cushioning materials. This multi-layer composite structure provides both the durability needed for repeated impacts and the softness required to prevent wall damage and reduce noise
2Productivity
If a hard surface is used for practice, then continuous practice is possible, but it damages soft walls and creates noise
Solution Approach 1:
The projectile's elastic modulus and damping coefficient are specifically engineered to allow repeated impacts on hard surfaces without causing damage or excessive noise, while maintaining consistent rebound characteristics for continuous practice
3Ease of operation
If a projectile with good rebound properties is used, then practice effectiveness is improved, but it may cause damage to surfaces
Solution Approach 1:
The projectile is designed with optimized elasticity parameters that provide sufficient rebound for effective practice while limiting the impact force transmitted to surfaces. The compression and recovery characteristics are tuned to reduce surface damage risk
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 projectile allows for effective solo practice in confined spaces, offering immediate feedback and a high degree of control, facilitating rapid learning and mastery of hand-eye coordination skills, and can be used against any hard surface without causing damage, making it suitable for novice and experienced athletes alike.
Implementation Method 1
A training projectile with optimal baffling and rebounding characteristics, comprising a combination of dense bounce elements and less dense baffling elements
Data Source
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AI summary
A training/practice/amusement projectile comprises a ball with optimal baffling and rebounding characteristics for play and training of hand-eye coordination and motor skills. The ball generally includes a combination of bounce and baffling elements. In one embodiment the bounce and baffling elements respectively comprise densely packed loops of filament, and individual filament strands of lesser density, both radiating from a core of the ball. A novel method of fabrication includes winding wider and narrower loops of filament, bundling same together at a cinched core, and then cutting the wider loops to form the strands radiating outward inched core to impart a generally spherical outer shape to the ball.