Report of East Sea Crossing by Underwater Glider

Park, Yosup; Lee, Shin-Je; Yong-Kuk, Lee; Jung, Seom‐Kyu; Jang, Nam-Do; Lee, Ha-Woong

doi:10.7850/jkso.2012.17.2.130

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…In Equation (4), the angle at which the horizontal speed (𝑉 𝑋 ) becomes the maximum is the point at which cos 𝜁 sin 1/2 𝜁 is the maximum. As shown in Figure 9, the glide angle reaches its maximum at cos 𝜁 sin 1/2 𝜁 = 0.657 at 34°.…”

Section: Maximum Speed Analysismentioning

confidence: 99%

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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: Maximum Speed Analysismentioning

confidence: 99%

“…The propulsive force in UGs is generated by buoyancy control by fluid inflow and outflow and by moment change using internal mass movement and wing movement. Therefore, they are suitable for long-time and long-distance ocean exploration because the power requirement is relatively small [3,4].…”

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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“…KIOST (Korea Institute of Ocean Science & Technology) has been operating underwater gliders since 2011. The first flight was crossing East Sea during 6 days, where the eddy current of 1kt was present, and touching down 200m depth while sound velocity and temperature profiling at every 5 seconds (Imlach and Mahr, 2012;Park et al, 2012). All the experimental data presented in the following were obtained during this operation in the region shown in Figure 1 using Exocetus Coastal Glider, LG19 (Exocetus, 2013;Imlach and Mahr, 2012).…”

Section: Introductionmentioning

confidence: 99%

Underwater glider navigation error compensation using sea current data

Kim

Park

Lee

et al. 2014

IFAC Proceedings Volumes

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

Ji,

Lee,

et al. 2023

Preprint

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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.

show abstract

Report of East Sea Crossing by Underwater Glider

Cited by 5 publications

References 4 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

Underwater glider navigation error compensation using sea current data

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

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