Traditional vanes spin the arrow by deflection which certainly causes drag. The vanes have no lift, just deflection when placed in offset or helical . The more surface area involved that is not in straight line with the airflow, the greater the spin, the drag snd the potential for noise.
The AV 2 & 3 vanes use Bernoulli’s principle to create lift on the convex side of the vane. They are fletched straight.
Drag is not bypassed by using the Bernoulli lift principle. Creating lift comes at the cost of creating drag. The faster the arrow, the greater of each. The spin speed of the AV2 and a lot more with AV3 is very fast. But, it comes at the expense of drag. Drag comes with either method: deflection of a flat vane or from lift from a vane with an airfoil. If a vane is ever developed that can create lift with no drag, the developer should get a great patent attorney and start planning on what to do with the billions of $$$s since NASA and every airplane manufacturer will want to use that principle.
Hopefully, some of the serious tournament will chime in here. More spin isn’t always better, especially with an exposed BH because spinning the BH creates drag also.
I have not gotten greater accuracy with the AV3 but have gotten very good accuracy with the AV2; and, in addition, they are extremely quiet. However, they are not magic! That quiet spin does come without drag. I’ve not noticed flatter flight. I’d actually like a little less spin and would likely use a AV 1 1/2 if available.
Yes, they are extremely quiet and the quiet spin comes from as you said "without drag" as Aero Vane 3 will fly with no sound. What you mentioned is the easiest explanation I've heard, thank you. . And I agree not magic, but designed to be that way. AOA of the vane based on aero dynamic elasticity with 4 zone texturing of vane. Its a lot to understand and can be hard to explain. Dorge is the best one to exaplin those. He has Youtube videos I think on his channel.
Last I talked to you about vanes you were applying Aero Vanes to standard type arrow builds and in doing so pending bow tune and/or the arrow and point the Aero Vane can make you go backwards an have lesser results. The Aero Vane are not drag based system, they are lift based.. The Av3 is approaching 200,000 ronalads which the vanes produces "circular lift ". The vane does not need to nor does it act as a guidance system as a plane wing would. Planes has the option of applied energy vs the bow once the arrow is shot the arrow has whatever the bow produces and that is it. We can only try and maintain more of that energy.
At the other end you could be having a bow tune issues. A lot of these issues we can't see unless we film in high speed.. For example I shot a KI Furious 9 bow. Seem to shoot real nice, great price for the bow. I thought killer option for hunters. I only shot the bow at about 20-30yrds, but when I put the high speed cams on it I was amazed that the cams were still attached to the limbs that the bow didn't rip itself apart. The cams did everything besides flop over like an egg in the pan. Now I understand why KI limbs have such be taper gap in their limbs. That being said while I build arrows to help dampen some of the issues of the bow and shooter there is not much one can do help shine the paint job after person drives truck off cliff.
"Designed in US Illinois, Aerovane is the first ever vane to employ (US Patent: 8,105,189) Airfoil Technology for archery arrows. Aerovane does not look like and does not work like traditional vanes; it is not flat but instead is shaped like and works like an airplane wing. Traditional vanes use drag to induce arrow rotation which fundamentally causes a huge loss in energy and speed Aerovane however, equipped our Airfoil Technology, not only induces or initiates arrow rotation, but also maintains it.
Aerovane also flies quieter than traditional vanes because Aerovane’s frontal curvature, the wing itself, takes heavily from an owl, the only bird on earth that can fly in complete silence. Fletched with Aerovane, your archery projectile will fly flatter, straighter, and more accurately and quietly." ( Firenock)
"Serious tournament archers", Glad you brought that up..
Rod White is a very accomplished shooter up to the Olympic Level. The BOOM STICK is a Concept System / Aero Vane Build on a Black Eagle Rampage Shaft. Just imagine if you had a slower fps bow say a Scorpyd DS 400 shoot as fast or faster than a Ravin 29 ( 430fps bow ) because of an arrow build and a bow at about 1/2 the price? Just to put that in perspective.
" Appropriately named BOOMSTIX, these arrows boast downrange speeds in excess of up to 28fps faster than any other arrow at a distance of 50yards...when compared to any other arrow of the same weight and size, even though all tested arrows leave the bow at the exact same time!! Covered under 3 US patents and developed in conjunction with Black Eagle Arrows and Firenock, these arrows are custom built to specific bows and models to reach unprecedented speeds at longer distances. This year at the Iowa Deer Classic, attendees have the rare opportunity to shoot their bows through a High Speed camera! See things in slow motion with your bow and arrow combination that will help you understand how to improve your equipment and increase the accuracy and efficiency of your bow. "