Firenock: Aerovane II


    Designed in US Illinois, Aerovane is the first ever vane that employed Airfoil Technology for archery arrows (US Patent # 8105189).  Aerovane does not look like and does not work like traditional vanes.  Aerovane is not flat, but instead, it is shaped like an airplane wing and works like an airplane wing.  Traditional vanes use drag to induce arrow rotation, but there is a huge loss in energy and speed of your arrow.  Aerovane, however, with Airfoil Technology, not only induces or initiates arrow rotation, but also maintains it.  With its ability to retain that arrow rotation, there is virtually no loss in energy and speed.  Additionally, Aerovane flies quieter than traditional vanes.  While its lower half is designed like an airplane wing, its upper half, the wing itself, takes heavily from an owl's wing, the only bird that can fly completely silently.  Aerovane will make your archery projectile fly flatter and straighter, more accurate and quiet.  You can shoot Aerovane with confidence.

How Does Aerovane Work?
    Unlike traditional vanes which use drag, the Aerovane uses an airfoil to create spin and rotation.  The Aerovane's basic working mechanism is based on Bernoulli's principle.  Simplified, this fundamental principle states that when airflow speed increases, pressure decreases and vice versa.  Used most commonly in airplane wings, an airfoil design allows air to flow more rapidly over one surface (upper) than another (lower).  Therefore, when this temporary imbalance ultimately causes turn, the lower surface will have more pressure than the upper one, creating a lift force that keeps the airplane -- and your arrow -- in flight.  Further, with three to four vanes on the arrow shaft, the lift from each vane causes circular lift.



How Does Aerovane Fly So Quietly?

There are 3 main contributing factors:

  1. Rigid Airfoil: one of the hardest vanes on the market, Aerovane is also designed as a slim pyramid to ensure rigidity.  With that stiff design, wow and flutter (together, also known as harmonics or oscillation frequency) are minimized. 
  2. Round Leading Edge: Aerovane is modeled after an owl's wing.  With its rounded edges, Aerovane allows air to flow over with minimum air molecule to air molecule disturbance.  This also minimizes the formation of a delta vortex, which robs speed and creates sound.
  3. Micro-textured Surface: There are 3 zones of micro-texturing on each side of the Aerovane.  Designed to minimize back end turbulence and vacuum back pressure, this technique minimizes surface to air drag (i.e. friction).

Key Features of Aerovane™ II

  1. Made of rigid material for maximum structural rigidity and steering ability
  2. Designed with Airfoil Technology to induce and conserve rotation
  3. Slim pyramid design for structural integrity
  4. Wind channel for structural flexibility
  5. Modeled after the wing of an owl, the only bird that flies without sound
  6. 3 different surface textures for minimal turbulence and maximum air speed
  7. Minimum delta vortex formation for minimum drag
  8. Minimum 1st to 2nd stage turbulence
  9. Higher down range speed than most common arrow vanes
  10. Easily bonds with fletching glue such as Firenock AG0600 / AG0GEL
  11. Designed in US Illinois and US Patent # 8105189

Specifications of Aerovane II

  1. Height : 0.55"
  2. Length : 1.967"
  3. Weight : 6.48 grain (+/- 0.2)
  4. Colors : 10 choices (red, pink, orange, yellow, green, lime, blue, black, white, clear)

Notes:

  1. For best results, fletch Aerovane II with the Aerovane Jig with clamp, or Bitzenburger jig with a zenith conversion kit with the Aerovane Straight Stainless Steel Clamp for arrows shooting at no less than 280 fps.
  2. Aerovane II must be fletched straight to perform best.
  3. Aerovane II works best with a bow with close to perfect nock travel.
  4. Aerovane II works best with arrow length not shorter than draw length.
  5. Aerovane II works best with a full containment rest (e.g. AeroRest, Hostage Pro, QuickTune 360 with uneven nock travel bows).
  6. Aerovane II can work with a worn out Whisker Biscuit arrow rest as Aerovane II has a thick frontal end, which it can open the bristles and let the vane pass through the rest with minimal drag.

Aerovane II 18/100 pack
Aerovane II for 12 arrows (up to 3 colors)
Aerovane II Test Result in February 2009 by Firenock Prostaff Jeff Bailey

    "Upon completion of the Aerovane II Testing in January, I was eager to hit the range again for additional testing of this awesome vane.  This time I increased the testing requirements by a step or two.  The first step I added was to actually measure the spine of each arrow I was using; which will be discussed in a following paragraph.  The next step was to add a testing requirement of Group Testing at a distance of 40 yards.  The final step was to use a Full Capture rest vice a drop away as I did in the last testing.  By using the NAP Quicktune 360, I am forcing the arrow to keep on track all the way until it leaves the bow; this is necessary since the bow I am using, 2009 PSE X-Force Dream Season set at 67 pounds, has uneven nock travel.

    In order to measure the actual spine of the arrows I am testing, I used the RAM QC Arrow Spine Tester.  I also checked to see if there were any weak or thinner spine areas of each arrow.  If there were, I would use this location to place my cock vane.  In other words, I would place the thickest part of the each arrow against my rest for testing consistency.  Just to note, the Trophy Ridge Crush arrows did not have any noticeable change in spine when placed on the tester.

    After weighing and computing the Front of Center for each arrow, I proceeded to the shooting portion of the test.  As with the testing I completed in January, chronograph testing at three different yardages was next on the list. As expected, the lightest (High Country Speed Pro Max) arrow came off the blocks the fastest, whereas the heaviest arrow (A/C Super Slim 340) was the slowest.  However, the interesting point is each arrow fletched with the Aerovane II only slowed an average of 9 fps over the 20 yard distance.  The arrows with the Blazer vane attached slowed down an average of 11 fps.

    Shooting the arrows at a vertical line 40 yards away, then with a 100 grain G5 Striker Broad-head 30 yards away were the same tests I conducted in January.  The new test this time around was Group Testing at 40 yards. In this test, I shot both arrows at the same target 40 yards away, then measured the distance between the two arrows.  Surprisingly, the lightest arrow was one of the arrows with the greatest distance; whereas the heaviest arrow was close to the top in this test.

    At the end of the testing, three arrows stood out from all of the others.  The first two were from Trophy Ridge, and the third was Gold Tip CAA 350.  All of these arrows flew like darts.  Even though Gold Tip hit to the right on both the vertical line and broad-head test, with minor adjustments to the sight, they will be hitting the mark.

    The benefit of the Aerovane II is plain to see no matter which arrow type you prefer.  Through the use of a full capture rest on a bow with uneven nock travel, and fletched with Aerovane II will make your arrows shoot like darts."


Aerovane II Test Result on March 16 2009 by Firenock Prostaff Jeff Bailey

    "I wanted to let you know the results from my testing of the Aerovane II placement this past weekend.

    I first started off placing the Aerovane II as far forward on the fletching clamp as possible.  This equated to a distance of 3 inches from the center of the nock to the back end of the vane.  Unfortunately, since I have adjusted my bow, placing the vane this far forward on the arrow actually places the vanes in front of the cables before I even start to draw the bow.  Every time I shot, the arrows would contact the cables and the arrow would be deflected way off target.

   I then decided to try again this time moving the vanes forward 0.25 inches at a time.  I set up three arrows; 1 with a distance of 1.25 inches between the center of the nock and the back of the vane (this is my normal set up); 1 with a distance of 1.50 inches; and 1 with a distance of 1.75 inches between the center of the nock and the back of the vane.  Even at only 1.75 inches, the vanes still made contact with the cables (even through it was very slight).  The 1.25 and 1.50 arrows flew exactly the same when it came to broad-heads and the vertical line test.  The strange part was with the chronograph test.  It seems the further forward the vane is, the slower the arrow became with distance.  The only explanation I could think of would be the vortices coming off the back of the vane would hit the remaining part of the shaft slowing down the arrow."

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