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

Dae-Hyeong Ji; Jung-Han Lee; Sung-Hyub Ko; Jong-Wu Hyeon; Ji-Hyeong Lee; Hyeung-Sik Choi; Sang-Ki Jeong

doi:10.20944/preprints202309.1390.v1

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preprints.org > engineering > marine engineering > doi: 10.20944/preprints202309.1390.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

Version 1 : Received: 19 September 2023 / Approved: 20 September 2023 / Online: 21 September 2023 (02:18:34 CEST)

A peer-reviewed article of this Preprint also exists.

Ji, D.-H.; Lee, J.-H.; Ko, S.-H.; Hyeon, J.-W.; Lee, J.-H.; Choi, H.-S.; Jeong, S.-K. Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine. Appl. Sci. 2023, 13, 11367. Ji, D.-H.; Lee, J.-H.; Ko, S.-H.; Hyeon, J.-W.; Lee, J.-H.; Choi, H.-S.; Jeong, S.-K. Design and Analysis of the High-Speed Underwater Glider with a Bladder-Type Buoyancy Engine. Appl. Sci. 2023, 13, 11367.

Abstract

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.

Keywords

underwater glider; buoyancy engine; resistance coefficients; horizontal speed; optimal glide angle

Subject

Engineering, Marine Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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