Hunting Arrow With Spring-Loaded Rotating Wings
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Solution Overview
Problem
Conventional hunting arrows often result in game moving a long distance due to insufficient blood loss, requiring excessive time and effort for capture, as they cause only a small amount of bleeding upon impact.
Innovation Solution
An arrow design featuring a penetration rotary unit with rotating wings that further damage the game's tissue after initial penetration, enhancing blood loss by rotating within the game's body, comprising an arrow shaft, feathers, connector, arrowhead, and spring, which provides a restoring force to bias the penetration rotary unit toward the arrowhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional arrow with a sharp tip is used to hunt game, then the arrow can penetrate the game's body, but the game spills only a small amount of blood and can move away for a long distance
Solution Approach 1:
The penetration rotary unit is designed to rotate dynamically after penetrating the game's body. The rotation is enabled by the spring mechanism that stores elastic potential energy during arrow flight and releases it upon impact, causing the penetration rotary unit to spin and twist within the game's body, thereby increasing tissue damage and blood loss while maintaining effective penetration
Solution Approach 2:
The arrow is divided into functional segments: the arrowhead for initial penetration, the penetration rotary unit with wings for rotational tissue damage, and the spring mechanism for energy storage and release. This segmentation allows each component to perform its specific function optimally - penetration followed by rotational damage multiplication
2Speed
If the arrow flies at high speed to ensure penetration, then the arrow can stick into the game's body, but the game may move away for a long distance due to insufficient blood loss
Solution Approach 1:
The spring is pre-compressed during the arrow's flight phase, storing elastic potential energy. Upon impact with the game, this stored energy is rapidly converted into rotational kinetic energy of the penetration rotary unit, ensuring immediate and intense tissue damage without requiring follow-up actions, thus reducing the time to incapacitate the game
Solution Approach 2:
The dynamic rotation of the penetration rotary unit upon impact multiplies the tissue damage effect beyond what a static arrowhead could achieve. The rotating wings tear through tissues in multiple directions, causing profuse bleeding that quickly immobilizes the game, significantly reducing capture time
3Device complexity
If a simple arrowhead design is used, then the arrow structure remains simple, but the game can move away easily due to minimal blood loss
Solution Approach 1:
The penetration rotary unit incorporates a spring-loaded rotation mechanism that adds dynamic functionality to the arrow structure. The spring compresses during flight and releases upon impact, causing the penetration rotary unit with its wings to rotate and twist within the game's body, dramatically increasing tissue damage and blood loss compared to static designs
Solution Approach 2:
The penetration rotary unit is nested within the connector assembly, with the spring housed inside the connector structure. The wings of the penetration rotary unit are positioned to extend outward only during rotation, allowing the compact nested design to achieve complex rotational damage multiplication without excessive overall size or structural complexity
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 arrow ensures significant blood loss and reduced movement of the game, facilitating easier capture by causing extensive tissue damage and increased bleeding upon impact.
Implementation Method 1
The spring is positioned between the stopper and the penetration rotary unit, and provides a restoring force to bias the penetration rotary unit toward the arrowhead
Implementation Method 2
a longitudinal central line of each of the feathers may be inclined relative to a longitudinal central line of the arrow shaft, so that air resistance affects the feathers while the arrow shaft is flying, thus allowing the arrow shaft to rotate when flying
Data Source
AI summary
Disclosed herein is an arrow for hunting. The arrow includes an arrow shaft having a predetermined length and including a nock on one end and a shaft threaded part in the other end. A plurality of feathers is positioned to be adjacent to the nock of the arrow shaft. A connector includes a connecting threaded part fastened to the shaft threaded part, a stopper, and a penetration threaded part. An arrowhead is connected to the connector in such a way as to be opposite to the connecting threaded part. A penetration rotary unit has a threaded part to be fastened to the penetration threaded part of the connector, is shorter than the penetration threaded part, and has wings. A spring is positioned between the stopper and the penetration rotary unit, and provides a restoring force to bias the penetration rotary unit toward the arrowhead.