STUDIES ON DEVELOPMENT OF FLUID DRAG MEASUREMENT METHOD WITH HIGH PRECISION AND DEVELOPMENT OF NEW ATHLETE SWIMMING SUIT WITH LOW FLUID DRAG

摘要

Sport science progresses step by step in the world. We are going to challenge to develop the athlete woman swimming suit with low fluid drag. From the first, fluid drag of the woman swimming suit is very small. It is very difficult to measure the difference of percent of fluid drag of the swimming suit. Special experimental apparatus is developed to measure fluid drag, precisely. It is succeeded to appraise fluid drag of athlete woman swimming suits at the precision 1% ～ 2%. As the results, the cloth with low fluid drag is found. The water repellent is worked into at intervals of one vertical stripe on the cloth. The cloth is woven of thin threads (polyester 80% and polyurethane 20%). Also, the relationship between fluid drag for the model body and the water depth from the water surface to the model body is investigated in details.