Golf ball with improved flight performance
View Patent ↗A golf ball with aerodynamic coefficient magnitude and aerodynamic force angle, resulting in improved flight performance, such as increased carry and flight consistency regardless of ball orientation. In particular, the present invention is directed to a golf ball having increased flight distance as defined by a set of aerodynamic requirements at certain spin ratios and Reynolds Numbers, and more particularly the golf ball has a low lift coefficient at a high Reynolds Number.
1. A golf ball with a plurality of dimples having an aerodynamic coefficient magnitude defined by C mag =√(C L 2 +C D 2 ) and an aerodynamic force angle defined by Angle=tan −1 (C L /C D ), wherein C L is a lift coefficient and C D is a drag coefficient, and wherein C L is at least one of about 0.144 at a pole over pole orientation or about 0.138 at a poles horizontal orientation at a Reynolds Number of about 230000 and a spin ratio of about 0.085.
2. The golf ball of claim 1 , wherein the golf ball has a first aerodynamic coefficient magnitude from about 0.24 to about 0.27 at a Reynolds Number of about 230000 and a spin ratio of about 0.085.
3. The golf ball of claim 1 , wherein C L is at least one of about 0.159 at a pole over pole orientation or about 0.154 at a poles horizontal orientation at a Reynolds Number of about 207000 and a spin ratio of about 0.095.
4. The golf ball of claim 3 , wherein the golf ball has a second aerodynamic coefficient magnitude from about 0.25 to about 0.28 at a Reynolds Number of about 207000 and a spin ratio of about 0.095.
5. The golf ball of claim 1 , wherein C L is about 0.144 at a pole over pole orientation and about 0.138 at a poles horizontal orientation at a Reynolds Number of about 230000 and a spin ratio of about 0.085.
6. The golf ball of claim 3 , wherein C L is about 0.159 at a pole over pole orientation and about 0.154 at a poles horizontal orientation at a Reynolds Number of about 207000 and a spin ratio of about 0.095.
7. A golf ball with a plurality of dimples having an aerodynamic coefficient magnitude defined by C mag =√(C L 2 +C D 2 ) and an aerodynamic force angle defined by Angle=tan −1 (C L /C D ), wherein C L is a lift coefficient and C D is a drag coefficient, wherein C L ranges from about 0.144 to about 0.138 and C D ranges from about 0.219 to about 0.217 at a Reynolds Number of about 230000 and a spin ratio of about 0.085.
8. The golf ball of claim 7 , wherein C L is about 0.144 at a pole over pole orientation and about 0.138 at a poles horizontal orientation at a Reynolds Number of about 230000 and a spin ratio of about 0.085, and wherein C L is about 0.159 at a pole over pole orientation and about 0.154 at a poles horizontal orientation at a Reynolds Number of about 207000 and a spin ratio of about 0.095.
9. The golf ball of claim 7 , wherein C L is at least one of about 0.169 at a pole over pole orientation or about 0.166 at a poles horizontal orientation at a Reynolds Number of about 184000 and a spin ratio of about 0.106.
10. The golf ball of claim 7 , wherein the golf ball has a first aerodynamic coefficient magnitude from about 0.24 to about 0.27 at a Reynolds Number of about 230000 and a spin ratio of about 0.085 and a second aerodynamic coefficient magnitude from about 0.25 to about 0.28 at a Reynolds Number of about 207000 and a spin ratio of about 0.095.
11. The golf ball of claim 9 , wherein the golf ball has a third aerodynamic coefficient magnitude from about 0.26 to about 0.29 at a Reynolds Number of about 184000 and a spin ratio of about 0.106.
12. The golf ball of claim 7 , wherein at least 10 percent of the dimples have a shape defined by catenary curve.
13. A golf ball with a plurality of dimples having an aerodynamic coefficient magnitude defined by C mag =√(C L 2 +C D 2 ) and an aerodynamic force angle defined by Angle=tan −1 (C L /C D ), wherein C L is a lift coefficient and C D is a drag coefficient, wherein C L ranges from about 0.278 to about 0.29 and C D ranges from about 0.305 to about 0.309 at a Reynolds Number of about 69000 and a spin ratio of about 0.284.
14. The golf ball of claim 13 , wherein C L ranges from about 0.264 to about 0.270 at a Reynolds Number of about 92000 and a spin ratio of about 0.213.
15. The golf ball of claim 13 , wherein the golf ball has a first aerodynamic coefficient magnitude ranging from about 0.413 to about 0.423 at a Reynolds Number of about 69000 and a spin ratio of about 0.284.
16. The golf ball of claim 14 , wherein the golf ball has a second aerodynamic coefficient magnitude ranging from about 0.386 to about 0.393 at a Reynolds Number of about 92000 and a spin ratio of about 0.213.
17. The golf ball of claim 13 , wherein the golf ball has a first aerodynamic coefficient magnitude from about 0.40 to about 0.45 at a Reynolds Number of about 69000 and a spin ratio of about 0.284.
18. The golf ball of claim 17 , wherein the golf ball has a second aerodynamic coefficient magnitude from about 0.36 to about 0.40 at a Reynolds Number of about 92000 and a spin ratio of about 0.2 13.
19. The golf ball of claim 1 , wherein the golf ball has a first aerodynamic coefficient magnitude from about 0.262 to about 0.257 at a Reynolds Number of about 230000 and a spin ratio of about 0.085.
20. The golf ball of claim 7 , wherein the golf ball has a first aerodynamic coefficient magnitude from about 0.262 to about 0.257 at a Reynolds Number of about 230000 and a spin ratio of about 0.085.