Golf ball with rotational protrusions within a dimple

1. A golf ball having recessed dimples on the surface thereof, wherein at least one dimple is defined by a protrusion formed on an inner surface, the protrusion comprising a plurality of rotational elements whereby a boundary layer of air flowing over the surface of the dimples is energized,

wherein an acceptable number of rotational elements for each dimple is determined by the number of dimples on the golf ball, such that:

N

E

≤

4000

N

D

and, wherein a final dimple layout is defined by:

V D =V O −( N E V E )

wherein:

N E is the acceptable number of rotational elements for each dimple;

N D is the number of dimples on the golf ball;

V D is the chordal dimple volume;

V O is the phantom chord volume; and

V E is the elemental volume of the protrusion.

2. The golf ball of claim 1 , wherein the plurality rotational elements is fully contained within a dimple perimeter such that no part of the protrusion extends beyond a chordal plane of the dimple.

3. The golf ball according to claim 1 , wherein a cross-section of the plurality of rotational elements within the dimple perimeter provides for the cross-section to be different at a minimum of two locations.

4. The golf ball according to claim 1 , wherein each dimple maintains an effective theoretical edge angle controlled by the dimple volume.

5. The golf ball according to claim 4 , wherein the effective theoretical edge angle is between 9° to 18°.

6. The golf ball according to claim 5 , wherein the effective theoretical edge angle is between 12° to 16°.