2015 Fiscal Year Final Research Report
Efficiency improvement on an aquatic propulsion mechanism by using non-refrection and amplification property of waves on a wedge-shaped elastic body
| Project/Area Number |
25420182
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Gifu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
FURUYA Kohei 岐阜大学, 工学部, 助手 (40580056)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Keywords | 水中推進機 |
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| Outline of Final Research Achievements |
Firstly, a control method to realize non-reflection boundary at the caudal fin of a wedge-shaped elastic body was addressed. Based on our previous research, a technique which can suppress reflection waves at the end of a flexible planar plate was applied to a wedge-shaped elastic body by providing a part of flexible planar plate after the caudal fin. Then experimental results showed that a quasi-pure traveling wave, which shows that standing wave ratio is less than two for various driving frequencies, was realized on an aquatic wedge-shaped elastic body by the control method.
Secondly, a wedge-shaped elastic body was loaded on a ship, and the ship was propelled. By analyzing the motion of the ship, thrust force was calculated by using acceleration of the ship. It is, then, cleared by this analysis that an aquatic propulsion mechanism of a wedge-shaped elastic body has advantages in thrust to that of a flexible planar plate.
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| Free Research Field |
機械力学・計測制御
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