Analysis of a Fin Drag Force in a Biomimetic Underwater Vehicle

Piskur, Paweł; Szymak, Piotr; Flis, L.; Sznajder, Joanna

doi:10.17818/nm/2020/3.2

Cited by 15 publications

(13 citation statements)

References 21 publications

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“…The presented results of the experiment were provided for three fins with the same lateral surface but different thickness and material properties. Fins were driven with three different frequencies with the same angle of attack [11]. The amplitude of trailing edge can be used for the Strouhal number calculation (3) according to the vision system ability as presented in [3].…”

Section: Resultsmentioning

confidence: 99%

“…Biomimetic Underwater Vehicles (BUVs) [8], [11] have become more popular due to their ability to achieve a low hydroacoustic spectrum [10] and high energy efficiency in comparison to Underwater Vehicles (UVs) [13] with conventional rotary propellers. The control algorithm is based on the movement of fish, especially on their undulating propulsion [7].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Fin’s Material Capabilities on the Propulsion System of Biomimetic Underwater Vehicle

Piskur

Szymak

Kitowski

et al. 2020

Polish Maritime Research

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The technology of Autonomous Underwater Vehicles (AUVs) is developing in two main directions focusing on improving autonomy and improving construction, especially driving and power supply systems. The new Biomimetic Underwater Vehicles (BUVs) are equipped with the innovative, energy efficient driving system consisting of artificial fins. Because these driving systems are not well developed yet, there are great possibilities to optimize them, e.g. in the field of materials. The article provides an analysis of the propulsion force of the fin as a function of the characteristics of the material from which it is made. The parameters of different materials were used for the fin design and their comparison. The material used in our research was tested in a laboratory to determine the Young’s modulus. For simplicity, the same fin geometry (the length and the height) was used for each type of fin. The Euler–Bernoulli beam theory was applied for estimation of the fluid–structure interaction. This article presents the laboratory test stand and the results of the experiments. The laboratory water tunnel was equipped with specialized sensors for force measurements and fluid–structure interaction analysis. The fin deflection is mathematically described, and the relationship between fin flexibility and the generated driving force is discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Fin’s Material Capabilities on the Propulsion System of Biomimetic Underwater Vehicle

Piskur

Szymak

Kitowski

et al. 2020

Polish Maritime Research

Self Cite

View full text Add to dashboard Cite

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“…Maximizing efficiency requires use of very complex algorithms for controlling drive system. Due to characteristics of the environment, it is necessary to conduct laboratory tests in water tunnels and to use specialized computer software in numerical simulation of propeller's dynamics [14].…”

Section: Propulsion Systemsmentioning

confidence: 99%

Directions of Development of the Autonomous Unmanned Underwater Vehicles. A Review

Orłowski

2022

Maritime Technical Journal

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In the paper review of unmanned underwater vehicle (AUV) is presented. The description of main systems is depicted with focus on autonomous single vehicle as well as a swarm. As a consequence of development of AUV technology, research centers are focused on issues related to increasing the degree of their autonomy. Nowadays, mostly navigation and communication as well as high-efficient propeller systems are being developed. There are problems linking this issues. Their solutions includes development of new control laws containing algorithms to prevent collisions - for unmanned vehicles with elements of the underwater environment and for several underwater vehicles cooperating with each other in a swarm.

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“…A similar accuracy analysis with a limitation from one device to conduct the tests is presented in [ 18 , 19 , 20 ]. In addition, the study results were presented on small autonomous vessels [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Methodology for Verifying the Indication Correctness of a Vessel Compass Based on the Spectral Analysis of Heading Errors and Reliability Theory

Jaskólski

2022

Sensors

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This article presents a novel method for validating compass devices. To this end, the post-processing method was used, i.e., the previously recorded vessel’s heading from three compass devices was applied. A spectral analysis of the recorded heading in the frequency domain was conducted by applying the fast Fourier transform method. Based on a synthetic summary of the results of spectral analysis in the heading error frequency domain, the factors causing errors of low-frequency compass device indications, manifested by the vessel’s yawing due to the vessel steering errors on the pre-determined course and the external factors causing total drift of the vessel, were eliminated. To this end, the convolution functions in the form of the sum of input signals with an impulse response, i.e., the filter with a finite impulse response (FIR) and with an infinite impulse response (IIR), were used to compare the effectiveness of the methods estimating the vessel’s heading. The final stage of the research process in the methodology applied was the use of state- and time-discrete Markov processes whose task is to determine the matrices of the intensity of transitions between the states of individual compass systems.

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Analysis of a Fin Drag Force in a Biomimetic Underwater Vehicle

Cited by 15 publications

References 21 publications

Influence of Fin’s Material Capabilities on the Propulsion System of Biomimetic Underwater Vehicle

Influence of Fin’s Material Capabilities on the Propulsion System of Biomimetic Underwater Vehicle

Directions of Development of the Autonomous Unmanned Underwater Vehicles. A Review

Methodology for Verifying the Indication Correctness of a Vessel Compass Based on the Spectral Analysis of Heading Errors and Reliability Theory

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