요트세일의 풍동시험을 위한 공력 계측시스템 구축과 모형세일의 공력 계측

• Published in: 大韓造船學會 論文集 Vol. 48; no. 5; pp. 445 - 450
• Main Authors: 김철희(Choul-Hee Kim), 최정규(Jung-Kyu Choi), 김형태(Hyoung-Tae Kim)
• Format: Journal Article
• Language: Korean
• Published: 대한조선학회 2011
• Subjects: 조선공학; Yacht sail(요트세일); Aero-elastic similarity(공유탄성 상사); Flexible sail(유연세일); Wind tunnel(풍동); Aerodynamic forces measuring system(공력계측시스템)
• ISSN: 1225-1143; 2287-7355

In order to estimate a yacht sail performance, measuring system of aerodynamic forces acting on the yacht sail is constructed and experiments of flexible model sail are carried out at the medium-size subsonic wind tunnel of Chungnam National University. Experimental results for a flexible sail are compared with experimental and numerical results of fixed shape sail. In case of a fixed shape sail, lift and drag coefficients are rarely changed at all velocity conditions. However, those of the flexible sail are decreased as the incoming velocity is increased. These are understandably resulted from shape variations due to the flexible material. Therefore aero-elastic similarity should be more carefully considered in the model test rather than other similarities.