GOLF BALL
A golf ball is disclosed herein that has at least one modified aerodynamic characteristic or performance trait. More specifically, the golf ball disclosed herein can include a dimple pattern having a specific drag coefficient and/or specific integrated drag area.
1 . A golf ball comprising at least a core and a cover,
the golf ball having a compression of at least 80, a coefficient of restitution of at least 0.800, and an initial velocity of at least 250 feet/second,
the core having a weight of at least 1.245 ounces, a diameter of at least 1.525 inches, and a coefficient of restitution of at least 0.785;
the cover comprising a plurality of dimples arranged in a dimple pattern having a drag coefficient (C D ) and a lift coefficient (C L ), such that 0.230≤C D ≤0.250 at a Reynolds number of 220,000 and a spin ratio of 0.070, 0.230≤C D ≤0.250 at a Reynolds number of 160,000 and a spin ratio of 0.095, and 0.230≤C D ≤0.250 at a Reynolds number of 120,000 and a spin ratio of 0.100;
wherein the dimple pattern has an integrated drag area (DA) defined by:
DA
=
∫
225
,
000
160
,
000
C
D
(
Re
)
dRe
where C D (Re) is established at a launch condition of a golf ball speed of 182.0 mph, a launch angle of 10.0 degrees, and a spin rate of 2,700 rpm, such that 14,500≤DA≤15,500;
wherein C L ≥0.115 at a Reynolds number of 240,000 and a spin ratio of 0.060; and
wherein the drag coefficient and the lift coefficient at a Reynolds number of 225,000 and a spin ratio of 0.070 have the following relationship: 1.800≤C D /C L <2.000.
2 . The golf ball according to claim 1 , wherein the golf ball has a compression of at least 90.
3 . The golf ball according to claim 1 , wherein the golf ball has a compression of at least 95.
4 . The golf ball according to claim 1 , wherein the golf ball has a coefficient of restitution of at least 0.805.
5 . The golf ball according to claim 1 , wherein the golf ball has a coefficient of restitution of at least 0.810.
6 . The golf ball according to claim 1 , wherein the core has a weight of at least 1.260 ounces.
7 . The golf ball according to claim 1 , wherein the core has a weight of at least 1.280 ounces.
8 . The golf ball according to claim 1 , wherein the core has a diameter of at least 1.530 inches.
9 . The golf ball according to claim 1 , wherein the core has a diameter of at least 1.550 inches.
10 . The golf ball according to claim 1 , wherein the core has a coefficient of restitution of at least 0.795.
11 . The golf ball according to claim 1 , wherein the core has a coefficient of restitution of at least 0.800.
12 . The golf ball according to claim 1 , wherein the golf ball is a four layer golf ball including a dual layer core, casing layer, and the cover.
13 . The golf ball according to claim 1 , wherein the golf ball is a three layer golf ball including a core, a casing layer, and the cover.
14 . The golf ball according to claim 1 , wherein 0.235≤C D ≤0.250 at a Reynolds number of 220,000 and a spin ratio of 0.070, wherein 0.235≤C D ≤0.250 at a Reynolds number of 160,000 and a spin ratio of 0.095, and wherein 0.235≤C D ≤0.250 at a Reynolds number of 120,000 and a spin ratio of 0.100.
15 . The golf ball according to claim 1 , wherein 0.240≤C D ≤0.250 at a Reynolds number of 220,000 and a spin ratio of 0.070, wherein 0.240≤C D ≤0.250 at a Reynolds number of 160,000 and a spin ratio of 0.095, and wherein 0.240≤C D ≤0.250 at a Reynolds number of 120,000 and a spin ratio of 0.100.
16 . The golf ball according to claim 1 , wherein 0.235≤C D ≤0.245 at a Reynolds number of 220,000 and a spin ratio of 0.070, wherein 0.235≤C D ≤0.245 at a Reynolds number of 160,000 and a spin ratio of 0.095, and wherein 0.235≤C D ≤0.245 at a Reynolds number of 120,000 and a spin ratio of 0.100.
17 . The golf ball according to claim 1 , wherein 0.230≤C D ≤0.245 at a Reynolds number of 220,000 and a spin ratio of 0.070, wherein 0.230≤C D ≤0.245 at a Reynolds number of 160,000 and a spin ratio of 0.095, and wherein 0.230≤C D ≤0.245 at a Reynolds number of 120,000 and a spin ratio of 0.100.
18 . The golf ball according to claim 1 , wherein 14,750≤DA≤15,500.
19 . The golf ball according to claim 1 , wherein 15,000≤DA≤15,500.
20 . The golf ball according to claim 1 , wherein 14,500≤DA≤15,250.