Batted ball operational training airplane

摘要

PURPOSE: To provide a driving motion-practicing machine having a display capable of immediately grasping the body direction of a testee. ;CONSTITUTION: In a driving motion-practicing machine having a swing base for putting a testee holding a driving tool and swinging it; a load measuring means for measuring respective load centers of the left and right feet of the testee on the swing base; and a control means for determining the stance direction of the testee to a standard square direction on the basis of the measurement information of the load measuring means and displaying the information corresponding to the stance direction on a display means, the control means determines the longitudinal direction of the testee to the standard square direction on the basis of the stance direction, and displays on the display means a standard line 92a corresponding to the standard square direction and a display straight line 92b extending in the longitudinal direction of the testee with the middle point of the standard line 92a as a start point.;COPYRIGHT: (C)1995,JPO