## Overview

We tested three different vanes with 0°, 2°, and 4° helical.

- AAE Max Stealth <span class="text-sm opacity-70">(we accidentally skipped
  the 0° configuration for this vane)</span>
- Bohning Blazer
- Q2I Fusion X-II 2.5

This article analyzes the data from our study, focusing on aerodynamic
drag, restorative lift, and sound across these helical configurations.

## Everything in One Plot

This chart shows the aerodynamic drag constant, restorative lift, and
overall sound pressure level for the 0°, 2°, and 4° helical configurations.

Dots that are yellower (quieter) and closer to the bottom-left corner are
the best performers based on our test results. Hover over each dot to see
the details for that helical configuration.

Please note that we accidentally skipped the 0° Max Stealth configuration,
so it is omitted from the data here.

[Figure: ScatterColorPlot]

## Aerodynamic Drag

This chart shows the aerodynamic drag constant for these combinations,
plotted with 95% confidence intervals.

Lower drag means less wind drift, less drop, and more energy carried
downrange. In short: lower is better.

[Figure: CategoryCIPlot]

## Normalized Wind Drift

This chart shows simulated, normalized wind drift for these combinations,
with 95% confidence intervals.

Wind drift was modeled using the Precision Cut Archery ballistics engine,
simulating a 450-grain arrow launched at 280 fps in a 10 mph crosswind.

The first plot is at 80 yards and the second at 120 yards. Wind drift
increases with arrow drag and wind speed, and scales with the square of the
distance.

[Figure: CategoryCIPlot]

[Figure: CategoryCIPlot]

## Vane Noise, Whitetail Deer

This chart shows the weighted overall sound pressure level for these
combinations, with 95% confidence intervals, as it would be heard by a
whitetail deer.

Note: a 10&nbsp;dB increase in sound is roughly equivalent to a doubling of
perceived loudness.

[Figure: CategoryCIPlot]

## Vane Noise, Human

This chart shows the weighted overall sound pressure level for these
combinations, with 95% confidence intervals, as it would be heard by a
human.

Note: a 10 dB increase in sound is roughly equivalent to a doubling of
perceived loudness.

[Figure: CategoryCIPlot]

## Vane Fixed Blade Displacement

This chart shows the fixed blade horizontal displacement for every helical
configuration in the study, with 95% confidence intervals.

Lower values indicate that the vane did a better job steering the
fixed-blade broadhead, which will translate to more forgiveness with
broadheads or with a less-than-perfect shot.

[Figure: CategoryCIPlot]