2014
DOI: 10.1016/j.apor.2014.09.004
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Experiments with actively pitch-controlled and spring-loaded oscillating foils

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Cited by 53 publications
(19 citation statements)
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“…On the other hand, selection of extreme forward location of the flapping foil is dangerous from the point of view of intense slamming, especially at high wave conditions, and should be avoided. Similar findings based on experimental research have been reported by Naito and Isshiki [8] and more recently by Bøckmann and Steen [9].…”
Section: Numerical Results and Discussionsupporting
confidence: 73%
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“…On the other hand, selection of extreme forward location of the flapping foil is dangerous from the point of view of intense slamming, especially at high wave conditions, and should be avoided. Similar findings based on experimental research have been reported by Naito and Isshiki [8] and more recently by Bøckmann and Steen [9].…”
Section: Numerical Results and Discussionsupporting
confidence: 73%
“…Belibassakis). useful propulsive thrust, with simultaneous reduction of unwanted responses; see, for example, Rozhdestvensky and Ryzhov [7] for an extensive review, Naito and Isshiki [8] for a review in flapping-bow wings on ship propulsion, and Bøckmann and Steen [9] and Terao and Sakagami [10] for recent experimental research and full-scale applications, respectively. Working in the above direction Belibassakis and Politis [11] proceed by substituting the passive pitching setup by an active pitching control, using a proper control mechanism and a pitch setup algorithm, on the basis of the (known) random motion history of the wing.…”
Section: Introductionmentioning
confidence: 98%
“…This slight backlash made it difficult to investigate the possibility of simultaneous thrust and power generation. Further enhancements in propulsive performance may also be made by changing the pitch spring constant as highlighted by Bockmann et al [19].…”
Section: Discussionmentioning
confidence: 99%
“…The foils are mounted in two halves either side of the pivot arm and fixed via a shaft that rotates through three bearings that are pressed into the pivot arm, as can be seen in Figure 7. The spring constant can be altered using the same technique used by Bockmann et al in their experiments to test the performance of a flapping foil under passive and active pitch conditions [19], illustrated in Figure 8. A length of spring steel is fixed to the foil rotational shaft either side of the bearing mounting, shown in Figure 7.…”
Section: Flapping Foil Thrust and Power Generationmentioning
confidence: 99%
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