Utility iron
a technology of utility irons and irons, applied in the field of utility irons, can solve the problems of short shaft length, heavy head weight, and increased weight of heads, and achieve the effects of relatively reduced loft angle, increased driving distance, and relatively increased lie angl
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embodiment 1
[0032]The utility iron was manufactured, wherein the weight of the head is 284 g, the loft angle is 22°, the lie angle is 62.5°, and the length of the shat is 36 inches. As illustrated in FIG. 3, the head has one of the typical head shapes of the irons, the shape of which is different from the shapes of a typical wood or other utilities each having a dip face formed for the sake of a high elasticity.
experimental example 1
[0036]As seen in the above, the experiments were performed using four golf balls and the utility iron of the first exemplary embodiment of the present invention in such a way that hitting was performed 10 times with respect to each ball at the Korea Sports Promotion Foundation. The average values are shown in the following Tables 3 to 5 and FIGS. 4 and 5.
TABLE 3CLUBAttackVert.Horiz.ClubAngleClubSwingSwingFaceAVERAGESpeedValidPathPlanePlaneDyn. LoftAngleShotsPlayerClubBoll[mph][deg][deg][deg][deg][deg][deg]10 LaunchThe Open25.8Callaway75.83.6−3.153.0−0.417.8−1.610 LaunchThe Open23Callaway6.6−0.8−6.150.3−0.818.7−0.5LAUNCHLANDINGBallVert.Horz.SpinSpinMaxFlightLandingTotalSpeedSmashAngleAngleRateAxisHeightCarrySideTimeAngleLengthSide[mph]Factor[deg][deg][rpm][deg][yds][yds][yds][s][deg][yds][yds]153.11.4815.0−1.931133.818.8165.1−1.74.9332.4189.6−1.4125.91.4615.4−0.44148−0.628.5189.3−2.36.0141.9204.5−2.5
TABLE 4CLUBVert.Horiz.LAUNCHClubAttackClubSwingSwingDyn.FaceBallSmashVert.Horiz.Speed...
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