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Vedachalam, N.
- Unmanned Underwater Vehicles: Design Considerations and Outcome of Scientific Expeditions
Abstract Views :255 |
PDF Views:86
Authors
G. A. Ramadass
1,
S. Ramesh
1,
N. Vedachalam
1,
A. N. Subramanian
1,
D. Sathianarayanan
1,
R. Ramesh
1,
G. Harikrishnan
1,
T. Chowdhury
1,
V. B. N. Jyothi
1,
S. B. Pranesh
1,
V. Doss Prakash
1,
M. A. Atmanand
1
Affiliations
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
Source
Current Science, Vol 118, No 11 (2020), Pagination: 1681-1686Abstract
In India, scientific investigations of ocean basins have been in progress for more than five decades using indirect and direct measurement devices. These studies were aimed at resource identification, ecological, palaeo-oceanographic and palaeo-climatic research. To cater to the need of the ocean community, Remotely Operated Vehicles (ROV) rated for 6000 m (ROSUB 6000) and 500 m (PROVe-500) operational depths have been developed at the National Institute of Ocean Technology, MoES, Chennai. This article reports the design considerations for unmanned remotely operated underwater vehicles and the outcome of scientific expeditions conducted for deep sea mineral exploration, ocean biodiversity and polar science.Keywords
Biodiversity, Ocean Resources, Remotely Operated Vehicle.References
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- Vedachalam, N., Ramesh, R., Muthukumaran, D., Aarthi, A., Subramanian, A. N., Ramadass, G. A. and Atmanand, M. A., Reliabilitycentered development of deep water ROV ROSUB 6000. Mar. Technol. Soc. J., 2013, 47, 55–71.
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- Challenges in Developing Deep-Water Human Occupied Vehicles
Abstract Views :269 |
PDF Views:154
Authors
G. A. Ramadass
1,
N. Vedachalam
1,
S. Ramesh
1,
D. Sathianarayanan
1,
A. N. Subramanian
1,
R. Ramesh
1,
T. Chowdhury
1,
S. B. Pranesh
1,
M. A. Atmanand
1
Affiliations
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
1 National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
Source
Current Science, Vol 118, No 11 (2020), Pagination: 1687-1693Abstract
Human occupied vehicles (HOV) offer enhanced manoeuvering over the remotely operated vehicles and autonomous underwater vehicles. The presence of human increases the dexterity of the HOV operations, but at the same time, the man-rated vehicle design and operation requires significant attention to vehicle reliability, and in turn human safety. This article details the challenges involved in the design and development of deep water HOV, with specific reference to the 6000 m depth-rated HOV designed by the MoES– National Institute of Ocean Technology for enhancing India’s engineering capability in the deep ocean scientific research.Keywords
Ballast, Batteries, Deep Ocean, Human Occupied Vehicle, Navigation.References
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- Vedachalam, N., Ravindran, M. and Atmanand, M. A., Technology developments for the strategic Indian blue economy. Mar. Georesour. Geotechnol., 2018; doi:org/10.1080/1064119X.2018. 1501625.
- Vedachalam, N., Ramesh, R., Muthukumaran, D., Aarthi, A., Subramanian, A. N., Ramadass, G. A. and Atmanand, M. A., Reliabilitycentered development of deep water ROV ROSUB 6000. Mar. Technol. Soc. J., 2013, 47(3), 55–71.
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- Pranesh, S. B., Kumar, D., Anantha Subramanian, V., Sathianarayanan, D. and Ramadass G. A., Structural analysis of spherical pressure hull viewport for manned submersible using biological growth method. Ships Offshore Struct., 2018, 13(6), 601–616.
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- Vedachalam, N. and Ramadass, G. A., Realizing reliable lithiumion batteries for critical remote-located offshore systems. Mar. Technol. Soc. J., 2016, 50(6), 52–57.
- Vedachalam, N., Ramadass, G. A. and Atmanand, M. A., Reliability centered modeling for development of deep water human occupied vehicles. Appl. Ocean Res., 2014, 46, 131–143.
- Vedachalam, N., Ramadass, G. A. and Atmanand, M. A., Review of technological advancements and HSE-based safety model for deep-water human occupied vehicles. Mar. Technol. Soc. J., 2014, 48(3), 25–42.
- Ramesh, R., Jyothi, V. B. N., Vedachalam, N., Ramadass, G. A. and Atmanand, M. A., Development and performance validation of a navigation system for an underwater vehicle. J. Navigation, 2016, 69, 1097–1113.
- Vedachalam, N., Ramesh, R., Jyothi, V. B. N., Doss Prakash, V. and Ramadass, G. A., Autonomous underwater vehicles – challenging developments and technological maturity towards strategic swarm robotics systems. Mar. Georesour. Geotechnol., 2018; doi.org/10.1080/1064119X.2018.1453567.
- Design and Development of Human Metabolic Simulator for a Deepwater Manned Submersible
Abstract Views :185 |
PDF Views:94
Authors
C. S. Sandhya
1,
S. Ramesh
1,
N. Thulasi Prasad
1,
K. N. V. V. Murthy
1,
D. Gobichandhru
1,
M. Murugesan
1,
N. Vedachalam
1,
G. A. Ramadass
1
Affiliations
1 Deep-Sea Technologies Group, National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
1 Deep-Sea Technologies Group, National Institute of Ocean Technology, Ministry of Earth Sciences, Chennai 600 100, IN
Source
Current Science, Vol 122, No 2 (2022), Pagination: 187-194Abstract
In order to cater to the scientific demand for deep ocean exploration with human presence, manned submersible capable of operating up to 6000 m depth is being designed and developed at National Institute of Ocean Technology. The submersible can accommodate three personnel inside the confined space volume of 4.8 m3 human capsule (personnel sphere) for total endurance of 108 h (12 h normal mission and 96 h in case of emergency). Human Metabolic Simulator was developed by following Det Norske Veritas guideline to validate the life support system design during initial stages of qualification inside the personnel sphere. By considering human respiratory quotient (RQ), HMS was designed by combusting propane gas (RQ 0.6) to produce carbon dioxide, water and heatKeywords
Human Metabolic Simulator, Life Support System, Manned Submersible, Personnel Sphere, Respiratory Quotient.References
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