Patent ID: 6285445
Filing Date: 2001-09-04
Classification: G01P

Abstract:
A method of determining a lift coefficient and a drag coefficient for 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;b. launching the golf ball along the flight path from the launching device;c. taking two images of the ball at a first position spaced from the launching device, a first time interval between taking the images at the first position being less than 0.01 seconds;d. taking two images of the ball at a second position, a second time interval between taking the images at the second position being less than 0.01 seconds;e. using the images at the first position to determine a first measured velocity at the first position;f. using the images at the second position to determine a second measured velocity at the second position; andg. calculating the drag coefficient and the lift coefficient using the first measured velocity and the second measured velocity.