Deformable Broadhead Impact Member for Kinetic Energy Transfer
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Solution Overview
Problem
Conventional archery broadheads fail to effectively transfer kinetic energy to targets at higher arrow speeds, resulting in minimal damage and increased arrow loss.
Innovation Solution
The development of broadheads with deformable impact members that non-elastically deform upon engagement, increasing the effective impact area and transferring kinetic energy more efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional broadheads are used at higher arrow speeds, then arrow speed is improved, but kinetic energy transfer to target deteriorates
Solution Approach 1:
The impact member is designed to dynamically change its configuration from a compact pre-shot state to an expanded post-impact state. The legs are initially contained within the body housing and are forced outward upon target engagement, allowing the broadhead to adapt its structure in response to impact forces and maximize energy transfer.
Solution Approach 2:
The effective impact area parameter is changed from a small initial value to a larger expanded value upon target engagement. The leg expansion increases the surface area in contact with the target, thereby changing the physical parameters of the impact interface to improve kinetic energy transfer.
2Device complexity
If conventional broadheads are used, then device simplicity is improved, but damage inflicted on target deteriorates
Solution Approach 1:
The impact member is segmented into multiple legs that can move independently relative to the body housing. This segmentation allows each leg to be independently deployed and positioned, creating multiple contact points with the target that collectively increase the damage inflicted.
Solution Approach 2:
The legs are nested within the body housing in the pre-shot configuration, with each leg contained within the structural envelope of the broadhead. Upon impact, the legs are forced outward from their nested positions, expanding the impact structure to inflict greater damage on the target.
3Loss of energy
If impact area is increased, then kinetic energy transfer is improved, but device complexity deteriorates
Solution Approach 1:
The broadhead transitions from a static structure to a dynamic one where the impact member can change its configuration. The legs are held in a retracted position during flight and only expand upon target engagement, allowing the system to maintain simplicity during transport while achieving increased impact area when needed.
Solution Approach 2:
The effective impact area parameter is changed from a small initial value to a larger expanded value upon target engagement. The leg expansion increases the surface area in contact with the target, thereby changing the physical parameters of the impact interface to improve kinetic energy transfer.
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 deformable impact members significantly increase the damage inflicted on targets by expanding the effective impact area, leading to more ethical hunts and reduced arrow loss.
Implementation Method 1
an impact member coupled to the body and configured to deform as the impact member engages the target
Data Source
AI summary
A broadhead for coupling to an arrow that is shot toward a target including body extending along an axis and an impact member coupled to the body and configured to deform as the impact member engages the target.