During the last decades, the ionic polymer-metal composite (IPMC) received much attention because of its potential capabilities, such as large displacement and flexible bending actuation. In this paper, a biomimetic flapping air vehicle was proposed by combining the superiority of ionic polymer metal composite with the bionic beetle flapping principle. The blocking force was compared between casted IPMC and IPMC. The flapping state of the wing was investigated and the maximum displacement and flapping angle were measured. The flapping displacement under different voltage and frequency was tested. The flapping displacement of the wing and the support reaction force were measured under different frequency by experiments. The experimental results indicate that the high voltage and low frequency would get large flapping displacement.
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http://dx.doi.org/10.1155/2018/3091579 | DOI Listing |
Proc Biol Sci
May 2024
Department of Migration, Max Planck Institute of Animal Behavior, Radolfzell 78315, Germany.
Challenges imposed by geographical barriers during migration are selective agents for animals. Juvenile soaring landbirds often cross large water bodies along their migratory path, where they lack updraft support and are vulnerable to harsh weather. However, the consequences of inexperience in accomplishing these water crossings remain largely unquantified.
View Article and Find Full Text PDFBiomimetics (Basel)
November 2023
Department of Systems Innovations, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan.
FSI simulations of flapping motions have been widely investigated to develop a flapping-wing micro air vehicle. Because an intensive parametric study is important for the product design, a computationally efficient model is required. The purpose of the present study was to develop a reduced-order model of flapping motion.
View Article and Find Full Text PDFBiomimetics (Basel)
November 2022
Mechanical & Industrial Engineering, Montana State University, 220 Roberts Hall, Bozeman, MT 59717, USA.
Small-scale flapping-wing micro air vehicles (FWMAVs) are an emerging robotic technology with many applications in areas including infrastructure monitoring and remote sensing. However, challenges such as inefficient energetics and decreased payload capacity preclude the useful implementation of FWMAVs. Insects serve as inspiration to FWMAV design owing to their energy efficiency, maneuverability, and capacity to hover.
View Article and Find Full Text PDFJ R Soc Interface
November 2022
Department of Biosciences, Swansea University, Singleton Park, Swansea, UK.
All animals that operate within the atmospheric boundary layer need to respond to aerial turbulence. Yet little is known about how flying animals do this because evaluating turbulence at fine scales (tens to approx. 300 m) is exceedingly difficult.
View Article and Find Full Text PDFSci Rep
October 2022
Department of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
For effective ocean energy harvesting, it is necessary to understand the coupled motion of the piezoelectric nanogenerator (PENG) and ocean currents. Herein, we experimentally investigate power performance of the PENG in the perspective of the fluid-structure interaction considering ocean conditions with the Reynolds number (Re) values ranging from 1 to 141,489. A piezoelectric polyvinylidene fluoride micromesh was constructed via electrohydrodynamic (EHD) jet printing technique to produce the β-phase dominantly that is desirable for powering performance.
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