We do not yet recommend purchasing Arsenal primarily for aerial photography, simply because we haven't had a chance to test it.
Once we've confirmed that Arsenal detects the high-frequency vibration created by helicopters, we anticipate Arsenal will be useful in selecting appropriate shutter speed/ISO/aperture settings. There may be other uses as well.
If you do shoot areal photography with Arsenal, we recommend using the Handheld Mode. This will cause Arsenal to constantly calculate settings, which is necessary when in constant motion or changing conditions.
Have you used Arsenal for aerial photography, either successfully or unsuccessfully? Please tell us what you've learned so we can improve the product!