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INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS

A newly developed novel internal roll mechanism is implemented on the UTP glider where two water bladders are fitted to achieve roll control. The roll motion of the glider is affected by the difference in volume across the two water bladders because of the torque generated by fluid flow. To achieve...

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Main Author: WONG , HAO XIANG
Format: Final Year Project
Language:English
Published: IRC 2018
Online Access:http://utpedia.utp.edu.my/20078/1/Dissertation-Wong%20Hao%20Xiang-20812.pdf
http://utpedia.utp.edu.my/20078/
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spelling my-utp-utpedia.200782019-12-13T09:17:59Z http://utpedia.utp.edu.my/20078/ INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS WONG , HAO XIANG A newly developed novel internal roll mechanism is implemented on the UTP glider where two water bladders are fitted to achieve roll control. The roll motion of the glider is affected by the difference in volume across the two water bladders because of the torque generated by fluid flow. To achieve roll control, a disturbing roll moment is required. However, the presence of hydrodynamic roll moment opposes the roll and returns the glider to its original stable position to achieve lateral stability. Hence, in this work, steady-state Computational Fluid Dynamics (CFD) approach that uses the SST k–ω turbulence model was carried out to study the flow behaviour and to determine the restoring roll moment at three different roll angles for NACA0016 wing configuration. A rectangular shaped fluid domain was constructed around the glider in accordance with ITTC recommendations for CFD marine applications and the glider is subjected to its conventional cruise speed of 0.25 m/s. The required disturbing roll moment was determined by the summation of the restoring roll moment at glider’s initial angle with the moment required to produce a desired angular acceleration. Two linear equations had been developed to ease the computation of the required disturbing roll moment and the value of y-intercept which varies with the glider’s initial angle had been computed in a table. Study shows that a greater disturbing roll moment is required to achieve a bigger roll angle and within a shorter period. The centre of gravity of the glider is determined and is located at approximately 50.2 cm from the nose of the glider. IRC 2018-09 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/20078/1/Dissertation-Wong%20Hao%20Xiang-20812.pdf WONG , HAO XIANG (2018) INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS. IRC, Universiti Teknologi PETRONAS. (Submitted)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
description A newly developed novel internal roll mechanism is implemented on the UTP glider where two water bladders are fitted to achieve roll control. The roll motion of the glider is affected by the difference in volume across the two water bladders because of the torque generated by fluid flow. To achieve roll control, a disturbing roll moment is required. However, the presence of hydrodynamic roll moment opposes the roll and returns the glider to its original stable position to achieve lateral stability. Hence, in this work, steady-state Computational Fluid Dynamics (CFD) approach that uses the SST k–ω turbulence model was carried out to study the flow behaviour and to determine the restoring roll moment at three different roll angles for NACA0016 wing configuration. A rectangular shaped fluid domain was constructed around the glider in accordance with ITTC recommendations for CFD marine applications and the glider is subjected to its conventional cruise speed of 0.25 m/s. The required disturbing roll moment was determined by the summation of the restoring roll moment at glider’s initial angle with the moment required to produce a desired angular acceleration. Two linear equations had been developed to ease the computation of the required disturbing roll moment and the value of y-intercept which varies with the glider’s initial angle had been computed in a table. Study shows that a greater disturbing roll moment is required to achieve a bigger roll angle and within a shorter period. The centre of gravity of the glider is determined and is located at approximately 50.2 cm from the nose of the glider.
format Final Year Project
author WONG , HAO XIANG
spellingShingle WONG , HAO XIANG
INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
author_facet WONG , HAO XIANG
author_sort WONG , HAO XIANG
title INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
title_short INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
title_full INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
title_fullStr INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
title_full_unstemmed INVESTIGATION ON THE EFFECT OF ROLL MOTION ON MANEUVERABILITY OF UNDERWATER GLIDER USING WATER BLADDERS
title_sort investigation on the effect of roll motion on maneuverability of underwater glider using water bladders
publisher IRC
publishDate 2018
url http://utpedia.utp.edu.my/20078/1/Dissertation-Wong%20Hao%20Xiang-20812.pdf
http://utpedia.utp.edu.my/20078/
_version_ 1739832711415070720
score 13.244413

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