Propulsion for Biological Inspired Micro-Air Vehicles (MAVs)

Barata, Jorge M. M.; Neves, Fernando M. S. P.; Manquinho, Pedro; Silva, Telmo A. J.

doi:10.4236/ojapps.2016.61002

Cited by 7 publications

(6 citation statements)

References 32 publications

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“…Animals such as insects [2], birds, small fishes, and even the big blue whale are equipped with a spectacular propulsion system that was subjected to natural selection processes over millions of years, which inevitably offers a significant advantage [3,4].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Frequency and Amplitude Influence on a Plunging NACA0012

et al. 2020

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Natural flight has always been the source of imagination for Mankind, but reproducing the propulsive systems used by animals that can improve the versatility and response at low Reynolds number is indeed quite complex. The main objective of the present work is the computational study of the influence of the Reynolds number, frequency, and amplitude of the oscillatory movement of a NACA0012 airfoil in the aerodynamic performance. The thrust and power coefficients are obtained which together are used to calculate the propulsive efficiency. The simulations were performed using ANSYS Fluent with a RANS approach for Reynolds numbers between 8500 and 34,000, reduced frequencies between 1 and 5, and Strouhal numbers from 0.1 to 0.4. The aerodynamic parameters were thoroughly explored as well as their interaction, concluding that when the Reynolds number is increased, the optimal propulsive efficiency occurs for higher nondimensional amplitudes and lower reduced frequencies, agreeing in some ways with the phenomena observed in the animal kingdom.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Frequency and Amplitude Influence on a Plunging NACA0012

et al. 2020

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“…In Figure 1.15 we can observe some of the possible wing shapes planforms that are observed in birds in their flapping flight and their flight purpose. Some investigators like Barata et al [18,19], focused their studies on the take-off, landing phases and locomotion of animals, investigating more deeply the existing forces during take-off and mechanisms used in the locomotion of animals, concluding that the bird used in the tests can…”

Section: Design and Morphology Of Wingsmentioning

confidence: 99%

“…main tests: on the first test the objective was to understand the effect of the variation of the structural stiffness of the wing on the aeroelastic performance of the wing. To do that Mazaheri et al constructed 5 wings with the same structure (shown in Figure1 19…”

mentioning

confidence: 99%

Wing Design and Analysis for Micro Air Vehicle Development

Ferreira

Camacho

Neves

et al. 2022

AIAA SCITECH 2022 Forum

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Natural flight was always a source of inspiration to the human being, and with this, humans learned from observing it, even trying to reproduce multiple times what they saw. So new challenges emerged, and as new improvements with the evolution of technology, biomimetic gained new applicability, and great interest among the aeronautical scientific research community.The main objective of the present dissertation is to evaluate experimentally the influence of the shape, and structure in the wing, on their behavior and performance. To accomplish that goal, eight wings were designed (with two different methods), and afterward built, and tested at different airflow speeds (from 0 m/s up to 4 m/s) to compare their results as a function of their frequency, amplitude, average power, and their associated dimensionless parameters. After analyzing the results, it was seen that the amplitude ranges were between 0,12 m and 0,27 m, frequency between 4 Hz and 15 Hz, average power between 0,7 W and 1,8 W, Strouhal and Reynolds numbers have lower and upper limits of 0,15 to 2,2 and from 4,2×10 3 up to 2,8×10 4 , respectively. Also, it is important to mention that the designed wings produced less power per flapping cycle with the increase of the airflow velocity.

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“…To counteract this tendency, micro and nano aerial vehicles with indispensable civil and military applications like surveillance, espionage, atmospheric weather monitoring, and catastrophe relief purposes [9] are being developed. These systems offer undeniable maneuverability and efficiency at lower scales for which conventional propulsion systems become inefficient since, at this scale, high viscosity effects are present, which makes flapping-wing systems way more efficient and more easily maneuverable when compared to fixed wings [10].…”

Section: Introductionmentioning

confidence: 99%