Hunting Arrow Void Spaces for Blood Trail and Flight Stability
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Solution Overview
Problem
Hunters face challenges in creating a blood trail for game animals due to partial arrow penetration, which can cause the arrow to plug the entrance hole, minimizing blood expulsion and making it difficult to locate the animal, especially in cases of marginal shot placement.
Innovation Solution
The arrow design incorporates void spaces at the leading and trailing tips, including the broadhead and nock, to create a passageway for blood expulsion and air entry, enhancing blood trail formation and flight accuracy through vortex generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the arrow penetrates partially into the game animal, then the arrow can be retained in the animal for easier recovery, but the entrance hole becomes plugged minimizing blood expulsion and trail formation
Solution Approach 1:
The arrow shaft is divided into functional segments: a sealed leading portion that prevents backward blood flow, and a trailing portion with void spaces that facilitate blood expulsion. This segmentation allows the arrow to remain lodged in the animal while maintaining blood trail formation through the engineered passageway system.
Solution Approach 2:
The engineered passageway acts as an intermediary channel between the animal's internal cavity and the external environment. This controlled pathway ensures blood can exit the animal body effectively even when the arrow plugs the entrance hole, maintaining visibility of the blood trail for hunter recovery.
2Weight of moving object
If the arrow shaft is made hollow to reduce weight, then flight performance improves, but blood can flow backward along the shaft reducing trail effectiveness
Solution Approach 1:
The hollow shaft exhibits different properties at different locations: the leading portion is sealed to prevent backward blood flow, while the trailing portion contains void spaces to facilitate blood expulsion. This localized differentiation of structural properties resolves the contradiction between weight reduction and blood trail integrity.
Solution Approach 2:
The trailing portion of the shaft incorporates void spaces that function similarly to porous structures, allowing controlled fluid passage. These void spaces enable blood to exit the animal body through the arrow shaft without compromising the overall structural integrity or adding excessive weight.
3Reliability
If void spaces are added to the arrow shaft to facilitate blood expulsion, then blood trail formation improves, but the structural complexity of the arrow increases
Solution Approach 1:
The hollow shaft structure serves multiple functions simultaneously: it provides weight reduction through hollowness, contains the engineered passageway for blood expulsion, and maintains structural integrity. The void spaces in the trailing portion serve dual purposes of blood expulsion and maintaining shaft rigidity.
Solution Approach 2:
The engineered passageway is nested within the existing hollow shaft structure. The void spaces are integrated into the shaft wall thickness rather than adding external components, allowing the blood trail function to be embedded within the structural framework already required for arrow flight performance.
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 void spaces facilitate increased blood expulsion and air entry, resulting in a more vigorous blood trail and improved arrow flight characteristics, including accuracy and penetration, even in cases of partial penetration or lung hits.
Implementation Method 1
said front insert void space in fluid communication with said interior and through said trailing edge
Implementation Method 2
the inserts serve as a vortex generator. In other words, the arrow is an axis around an insert or inserts of the present invention cause rotation of air flow
Implementation Method 3
said vanes extending from said center of said arrow greater than said outer radius of said arrow
Data Source
AI summary
One or more void spaces is provided toward the leading tip of an arrow for hunting, and void spaces are provided toward the trailing tip. The void spaces toward the leading tip can be supplied at the broadhead, behind the broadhead, at a shaft insert, or at the arrow shaft itself. The void space or spaces toward the trailing tip can be supplied at the nock, in front of the nock, at a shaft insert placed between the nock and the arrow shaft, or at the arrow shaft itself. The passageway is provided from at or near leading tip of the arrow, through the arrow shaft, to at or near the trailing tip of the arrow. Blood can be expelled from any of the void spaces, and the void spaces can also allow air to enter the passageway and into the cavity of the game.