Experimental Research on Hydrodynamics on Arrows

The water tunnel and wind tunnel test on arrow aims to make clear the hydrodynam ics performance of arrows and to improve the technical know-how of archery movem ent. Through the experimental of study, we can give out a lot of conclusion: Wit hin the range of angle of attack(-6° —6°), the arrow can keep the state of at tached flow: The state of flow of the arrow with spiral plastic pinna is better than that of arrow with straight one; Within the experimental angle of attack, t he lift coefficient Cy will become larger with the pitching moment Mz getting s maller with the increase of the angle of attack. The arrow has the vertical stat ic stability; No arrow feather will have great impact on lift force Y and pitchi ng moment Mz; the feather rolling will have some impact on lift coefficient Cy, The arrow feather is the main parts to produce lift force Y and to give the arro w body relatively great static stability.