Archery Field Tip Aerodynamic Drag Matching
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Solution Overview
Problem
Existing archery broadheads typically fly differently from practice field tips, leading to inaccurate trajectories and potential damage to broadheads during target practice, which can dull blades and affect humane harvesting of game.
Innovation Solution
A practice archery arrow tip designed to mimic the aerodynamic and flight characteristics of actual hunting broadheads, featuring aerodynamic drag promoting elements such as scoops to regulate drag forces, allowing for consistent accuracy without sharpened cutting edges to minimize target damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional field tips are used for practice, then they are more aerodynamic and produce less drag, but the broadhead flies substantially differently and may not impact the target accurately
Solution Approach 1:
The practice field tip is designed to replicate the exact shape, structure, and aerodynamic properties of the actual broadhead, including the same drag characteristics and flight behavior. This copying approach ensures that the practice tip flies identically to the broadhead, allowing accurate trajectory prediction and target impact without the need for sharp cutting edges.
2Productivity
If sharpened broadhead blades impact the target material, then the broadhead can be shot at target for practice, but the sharpened blades become dulled and will not have the same cutting effect on game
Solution Approach 1:
The harmful sharp cutting edges are extracted and removed from the practice field tip, leaving only the aerodynamic body and drag-promoting features. This allows the practice tip to be shot at targets repeatedly without dulling, while the actual broadhead with sharp edges remains intact for humane game harvesting.
Solution Approach 2:
The practice field tip is designed as a disposable or replaceable component that can be shot at targets without concern for damage. Since it lacks sharp cutting edges, it can be used extensively for practice until worn, then replaced, while the expensive broadhead with sharp edges is preserved for hunting.
3Productivity
If mechanical broadhead blades deploy upon impact with target, then the broadhead can be shot at target, but the archer must carefully reset the blades which is time consuming
Solution Approach 1:
The practice field tip copies the external shape and aerodynamic features of the mechanical broadhead but eliminates the movable blade mechanism entirely. This simplified design removes the need for blade deployment and resetting, allowing continuous practice without time-consuming mechanical operations.
4Speed
If practice broadhead is molded as single unitary structure with same shape as actual broadhead, then it flies aerodynamically similar, but it is difficult and complicated to mold and blades tear up and destroy the target
Solution Approach 1:
The problematic cutting blades are extracted from the practice broadhead design, leaving only the aerodynamic body and drag-promoting features. This simplifies the molding process while maintaining aerodynamic similarity to the actual broadhead, and eliminates the target destruction caused by sharp blades.
Solution Approach 2:
The practice field tip has different local properties than the actual broadhead: it lacks sharp cutting edges and has modified blade regions that are rounded or absent. These local modifications reduce manufacturing complexity and target damage while preserving the overall aerodynamic shape and flight characteristics.
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 practice tip closely replicates the flight characteristics of actual hunting broadheads, reducing the need for costly replacements, increasing target longevity, and allowing archers to transition seamlessly from practice to hunting without significant changes in flight patterns.
Implementation Method 1
the head on aerodynamic drag promoting element increases the amount of head on drag force generated by the practice tip as air moves over the surfaces of the practice tip, for example, in flight
Implementation Method 2
the crosswind aerodynamic drag promoting element increases the amount of crosswind drag force generated by the practice tip as air moves over the surfaces of the practice tip, for example in flight, when experiencing a crosswind relative to the trajectory of the practice tip
Data Source
AI summary
An archery practice field tip and related method of use is provided, where the field tip has a first shape that is structurally different from a second shape of an actual hunting broadhead, but where the tip mimics the aerodynamics and flight characteristics of the hunting broadhead. The practice tip can be void of sharpened cutting edges, and can include a head on drag promoting element and/or a crosswind drag promoting element, either of which can be scoops, flanges, fins, holes and the like. The tip can have a head on aerodynamic drag that is within 40%, within 25%, within 10% and/or within 5% of the first head on aerodynamic drag of the hunting broadhead. The practice tip can have a crosswind aerodynamic drag that is within 40%, within 25%, within 10% and/or within 5% of the crosswind aerodynamic drag of the hunting broadhead.