Abstract
We aimed to develop a propulsion mechanism using a variablebending-stiffness fin of which stiffness can be changed dynamically. As the one such variable-stiffness fin, we have developed a fin with a variableeffective-length spring. The apparent bending stiffness of the fin can be changed dynamically. We have measured the thrust force of the propulsion mechanism using a fin with a variable-effective-length spring and visualized flow around the fin. In this paper, we describe the structure of the propulsion mechanism in fluid using a fin with a variable-effective-length spring, and the thrust force characteristics with changing effective length of the spring dynamically. Furthermore, we discuss the relationship between thrust force and flow around the fin.
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References
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Kobayashi S, Mashima T, Morikawa H (2003) Thrust Force Characteristics of Propulsion Mechanism in Fluid Using Variable-BendingStiffness Fin Modeled on Ciliary Movement. JSME International Journal, Series C, 46(4): 1340–1345
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Kobayashi, S., Nakabayashi, M., Kobayashi, R., Jie, J., Morikawa, H. (2008). Thrust Force Characteristics of Propulsion Mechanism in Fluid Using Fin with Dynamic Variable-Effective-Length Spring. In: Kato, N., Kamimura, S. (eds) Bio-mechanisms of Swimming and Flying. Springer, Tokyo. https://doi.org/10.1007/978-4-431-73380-5_21
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DOI: https://doi.org/10.1007/978-4-431-73380-5_21
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-73379-9
Online ISBN: 978-4-431-73380-5
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