The Application of Photogrammetry in the Study of the Effects of Sailboard Fin Flexibility
| Autor: | P G Kalaugher, C A M Broers, T W Chiu |
|---|---|
| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science. 209:373-381 |
| ISSN: | 2041-2983 0954-4062 |
| DOI: | 10.1243/pime_proc_1995_209_168_02 |
| Popis: | In recent years, the reduction of aero- or hydrodynamic drag on fins and finite wings by passive means has been a popular research topic. Among many drag reduction devices being investigated, the flexible tip is of particular interest to non-aerospace application. In the wind-surfing industry, slender fins with flexible tips have shown high performance recently. The development of sailboard fins, however, has been on a trial-and-error basis and the physics behind the improved performance has not been fully understood, although some suggest that the flexible tip helps to reduce the induced drag. At Exeter University a series of comparative studies has thus been carried out in order to help fully understand the effects of tip flexibility on performance. This paper presents the experiments which were aimed at observing and measuring the bending deflection and twist of the fins of various degrees of reinforcement due to fluid dynamic forces. Fin deformation was measured by means of photogrammetry which is a low-cost non-interfering technique suited for steady displacement measurement. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|