초록 ▼

A method and a system for measuring the spin decay rate of a golf ball. The system includes an indoor testing area, a launching device, and a measuring device positioned at a final position along the ball's flight path. When the ball is launched by the launching device, the measuring device measures

A method and a system for measuring the spin decay rate of a golf ball. The system includes an indoor testing area, a launching device, and a measuring device positioned at a final position along the ball's flight path. When the ball is launched by the launching device, the measuring device measures the spin rate and speed at the final position. Then, the launching device can launch the ball at the speed and spin rate of the final position and a new final speed and spin rate are measured again. The spin rate difference from launching to the final position is used to determine the spin decay rate. By using discrete spin decay rate measurements, the spin decay rate profile of a golf ball during its entire flight can be measured in the indoor area.

대표청구항 ▼

[ We claim:] [1.]1. A method of determining a spin decay rate of a golf ball along a flight path, wherein the method comprises the steps of:a. providing a launching device for launching the golf ball along the flight path at an initial speed and initial spin rate;b. launching the golf ball along the

[ We claim:] [1.]1. A method of determining a spin decay rate of a golf ball along a flight path, wherein the method comprises the steps of:a. providing a launching device for launching the golf ball along the flight path at an initial speed and initial spin rate;b. launching the golf ball along the flight path at the initial speed and the initial spin rate;c. measuring a final spin rate at a final position spaced from the launching device, wherein the step of measuring further includes taking two images of the ball at the final position;d. timing the flight of the ball from the launching to the final position; ande. determining the spin decay rate using the images at the final position.