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- 저자 : 하녹산(Ngoc San Ha) (검색결과 1 건)
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구남서(Nam Seo Goo),하녹산(Ngoc San Ha) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
The nature can be the best source of learning tool for scientists to devise mechanical equivalents for the process of locomotion. Among various forms of forward swimming locomotion, the helical wave propulsion of flagella was successfully imitated from bacteria and proposed in this study. To evaluate the efficiency of this propulsion system, we designed and fabricated a biomimetic thruster and evaluated their thrust performance experimentally. Besides we considered the effect of “complex” filaments which comes from Rhizobium Meliloti bacteria to “plain” filaments on the thrust force produced by single flagellum at low Reynolds numbers. To compare the efficiency of propulsion together, an experimental setup was constructed to measure the thrust force produced by a single flagellum in silicone oil. The experimental results were in agreement with theoretical values predicted by the Resistance Force Theory (RFT) model and the maximum thrust force of complex flagellum were achieved at pitch angle of small helix q<SUB>s</SUB>=45°. In addition, we found that the thrust force generated by the complex flagellum has a value about 10 percent higher than that of plain flagellum with the same equivalent diameter.
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