PATH OF DISCUS FLIGHT AND AERODYNAMIC FORCE
铁饼飞行的轨迹和气动力

The path of discus flight and the effects of the throw velocity/angle, spin and wind conditions on discus flight are discussed in this paper, considering the aerodynamic force on the discus. The theoretical and experimental investigations of discus flight indicate the following useful conclusions: the optimum combination of throw angle and discus inclination angle is 35°/26° at zero wind, while 45° is not the best release angle due to the aerodynamic force; different combinations of throw angle and inclination angle should be adopted according to local wind conditions; a spin speed of 25 r/s when releasing the discus is enough to stabilize the discus's initial orientation.