Underwater glider &amp;#x2018;SOARER&amp;#x2019; for ocean environmental monitoring

Arima, Masakazu; Tonai, Hirofumi; Kosuga, Y.

doi:10.1109/ut.2013.6519878

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Currently, UGs are widely used in oceanographic research [5][6][7]. UGs can navigate by changing the ballast water amount in the buoyancy engine periodically to have good merit of using minimal energy [8,9].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine

Ji,

Lee,

et al. 2023

Applied Sciences

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This study entailed the design and analysis of a 400 m class underwater glider operated by a bladder-type buoyancy engine. The underwater glider was designed for high-speed movement with a maximum velocity of 2 knots. The shape of the hull was designed to reduce water resistance using the Myring hull profile equation. The reliability was verified by performing simulations using resistance coefficients. The relationship between the control value of the ballast discharged from the buoyancy engine and the glider’s speed according to the path angle was analyzed. Further, the relationship between the optimal glide angle and the design control value of the ballast was derived, and the optimal glider speed was estimated accordingly. Based on the analysis results, a bladder-type buoyancy engine was developed, and the maximum speed of the tested underwater glider was measured via sea trials.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine

Ji,

Lee,

et al. 2023

Applied Sciences

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“…In the past few years, underwater gliders (UGs) are widely used in oceanographic research. [1][2][3][4] UGs can navigate changing the ballast water amount in the buoyancy engine periodically such that it has a good merit of using very small energy. [5][6][7] UGs have an excellent endurance up to a few months or more.…”

Section: Introductionmentioning

confidence: 99%

Design and control of hybrid underwater glider

Choi

Kang³

et al. 2019

Advances in Mechanical Engineering

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In this article, a design and analysis on 200-m-class hybrid underwater glider actuated by a buoyancy engine and a thruster was studied. The hull shape of the hybrid underwater glider was designed to reduce underwater resistance using Myring hull profile equations. A computational fluid dynamics analysis was conducted, and a resistance coefficient similar to that of existing underwater vehicle was calculated such that simulation reliability was verified. The relationship between the control value of the ballast discharged by the buoyancy engine and the velocity of a glider according to the path angle was analyzed. Through the analysis, the relationship between the optimal glide angle and the designed control value of the ballast water was drawn, and using this relationship, the optimal glider velocity was estimated. Also, the velocity of the hybrid underwater glider using the thruster only was measured through an experiment. Using both the thruster and ballast water control, it was shown that the maximum velocity of the developed hybrid underwater glider is over 2.4 knots.

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“…In the past few years, Autonomous Underwater Gliders(AUGs)are widely used in oceanographic research [1][2] [3][4] [5]. AUGs area class of underwater vehicles that can change their gravity center and net buoyancy to periodically navigate in the ocean [6] [7] [8].…”

Section: Introductionmentioning

confidence: 99%

Impact of folding propeller spinning position for the transit efficiency of a hybrid-driven underwater glider

Chen

Zhang

2016

OCEANS 2016 - Shanghai

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Abstract-A hybrid underwater glider(HDUG) is developed based on a folding propeller. The blades of the propeller can fold and unfold according to the motor work or not. When it stop spinning, the blades will come to a rest position. The hydrodynamic performance will vary with the position of the blades, thus the transit efficiency of the HDUG will also vary. So there must be an optimal transit efficiency for the propeller spinning position. Thus to investigate this problem, this paper presents a thorough approach characterizing the transit efficiency for different folding propeller spinning position of the HDUG. This paper employ first-principle analysis that concludes the effect of efficiency for spinning position of the blades. This result implies that the spinning position can effect the transit efficiency of a hybrid-driven underwater glider based on the mathematical model.

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Underwater glider ‘SOARER’ for ocean environmental monitoring

Cited by 6 publications

References 3 publications

Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine

Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine

Design and control of hybrid underwater glider

Impact of folding propeller spinning position for the transit efficiency of a hybrid-driven underwater glider

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