Effect of Water Depth on ROV Materials Selection and Designs (original) (raw)
Related papers
Conceptual Design of Remotely Operated Underwater Vehicle
2014
Research in the underwater of the sea is a very interesting field. However, due to the difficulties and dangerous condition, human activities under the sea water are limited. Thus, a dedicated tool or device such as a Remotely Operated Underwater Vehicle (ROV) is required in helping human to perform these research activities. This paper presents design and construction of ROV, which differ depending on its applications. Some of the ROV’s classifications include micro, mini, general, light work class, heavy work class and burial ROV. Therefore, it is essential to identify the design concept and the classification of a new proposed ROV for underwater application. Several main sub-modules need to be considered during the development of ROV, which include structured/ frame and fitting, control unit/CPU, monitoring system (camera), buoyancy and propulsion system. Each module needs to be properly designed so that the ROV can work as planned. This paper presents a concept design of the ROV...
Design and Fabrication of Under Water Remotely Operated Vehicle
2021
Underwater Remotely Operated vehicle is a tethered mobile vehicle most often used to monitor underwater oil and gas drilling inspection, telecommunications and homeland security. The main focus of this research is to design a vehicle at low cost which is safe, portable, and easy to use while increasing the maneuverability and efficiency to reach a depth of 5 meters. While conducting research a unique design is selected based on a novel fin propulsion mechanism rather than propellers. Propellers though have high speed but cannot work on low flow rates and their blades can be damaged if jelly fish or other material is struck in its shaft. Two shapes have been considered to remove above difficulties i.e. Fish and Turtle. Due to higher stability, larger area and greater hydrodynamic efficiency Sea Turtle has been selected, as it can easily overcome the forces like buoyancy, pressure and thrust force. The results extracted from this research shows that the underwater vehicles based on th...
Power Integrity Requirement of New Generation of ROV for Deep Sea Operation
Remotely operated vehicles (ROVs) system requires powerful vehicles to support the bollard thrust and tool power required for deepwater tasks. Evolving deeper waters, vehicle support for heavy-duty tasks demand, deepwater subsea construction, repair and maintenance require efficient ROV power pack to support these tasks. Typical work-class ROV systems provide maximum power levels ranging from 100 to 200 horsepower that produce impressive thrust in either vertical or horizontal directions. Problem associated with ROV power pack include inefficiencies in the power system designs that limit peak system performance thrust curves, inability of the hydraulic system to adjust to varying demands, environmental concern related to energy usage and ship husbandry. This paper address the design and development of a variable pressure power delivery and propulsion system that significantly increases overall system efficiency to maximize use of available power.
Sustainable Maritime Transportation and Exploitation of Sea Resources, 2011
The present study focuses on the theoretical and experimental hull resistance analysis of an underwater ROV remotely operating vehicle, small in mass and dimensions, used for maritime and offshore operations survey at 30 m design depth. In order to evaluate the mini-ROV resistance, with and without free surface influence, both experimental and statistical methods were applied. An ellipsoidal body shape was selected, whose main dimensions were 500 × 350 × 250 mm, having horizontal and vertical propeller tubes in the external shell structure, placed at both sides and ends. In the experimental tests four different immersion cases are analysed, corresponding to the speed domain 1 to 2 m/s. The 1:1 scale experimental ROV model tests were performed at the Towing Tank of the Naval Architecture Faculty, from the “Dunarea de Jos” University of Galati. The comparison between the experimental results and statistical predictions evinced the overestimation of the mini-ROV resistance based on statistical relations.
Design and Manufacturing of Remotely Operated Underwater Vehicle
İZMİR ii A.Ş. and Nehir EREN for Drybox manufacturing, Kastaş A.Ş. for sealing solutions, İYTE workshop staff Murat MİRZA, Şerafettin ÇAVDAR, Arif TOSUN and Mert Bartu IŞIK's father for transportation. iii ABSTRACT A DESIGN PROJECT OF A REMOTELY OPERATED UNDERWATER VEHICLE Underwater ROVs' have very large field of operation and help many people such as scientists, explorers or other different industrial users. Operators generally use these vehicles to eliminate the risks of the underwater environment. Under 50 meters
E3S Web of Conferences
Over the last few decades, underwater mechanical system became a necessity for ocean research and exploration. The necessity of this type of equipment provides a new type of marine platforms in different areas of oceanographic research. Until this moment, the underwater vehicles have developed in different shapes, sizes and means of propulsion. Take into consideration these characteristics, we could determinate the type and mission of the vehicle. In this paper we investigate the problem regarding the pressure exerted of remotely operated vehicle. The remotely operated vehicle is designed in order to achieve different mission regarding the surveillance in lakes, harbors and maritime environment. This mission can take place through a remote control system placed onshore or on seaborne platforms. To improve the endurance of remotely operated vehicle, we performed a simulation study during which we compare the drag forces acts on the underwater vehicle according to its shape. Using Sol...
Underwater ROV as Inspection and Development Platform
Transactions on Maritime Science, 2017
The successful business technical cooperation between the University of Split and the company PLOVPUT LLC yields a very usable, lightweight, maneuverable underwater Remote Operated Vehicle (ROV). The ROV is capable of diving down to 150 m depth. It can carry different remote controlled sensors and tools, and resolve challenging tasks. Primarily ROV’s usage is to inspect underwater electrical installation. It is equipped with HD camera and LED lights. An umbilical cable is used to transfer data and electrical power from the surface to the underwater vehicle. The position control was realized using inexpensive PS2 joystick console. ROV’s development was mostly carried out by the students of the University of Split (UNIST). The mechanical and electrical subsystems were built and tested at UNIST laboratories. In this paper, ROV mechanical and electrical systems are outlined and basic subsystems are presented.
Comprehensive study of current trend of the remotely operated vehicle for underwater systems
TELKOMNIKA, 2022
This paper aim to provide a basic fundamental knowledge for researchers on underwater remotely operated vehicle (ROV) system and current trend of ROV controller. The vehicle is used for exploration, investigation or inspection of underwater environment as a replacement of human due to human limitation. It can dive deeper than human and can be manoeuvred into hazard environment. In this paper, the basic development and classification of ROV is discussed. The modelling of ROV, manoeuvrability and controller designed by researchers since 1990 also being discussed. It is expected that this paper will help readers in doing research on the controller of ROV.
Computational fluid dynamic study on design and modification of underwater remotely operated vehicle
Remotely Operated Vehicle (ROV) has been widely used in numerous underwater exploration applications such as exploration of complex deep sea environment, pipeline detection, installation, maintenance, and repair. Thus, it is worthy to design, optimize, and performance evaluation of ROV systems for underwater exploration purposes. Computational Fluid Dynamic (CFD) is a computational approach that is very helpful and widely used to examine the flow characteristics of ROV systems. In this research work, CFD analyses of ROV bodies with different thruster blades were carried out in order to generate thrust forces by the thruster blades. For this purpose, ANSYS FLUENT was used to examine the flow characteristics over the ROV body. The analyses were performed at different flow velocities, such as 1 m/s, 1.5 m/s, 2 m/s, 2.5 m/s, 3 m/s and 3.5 m/s. The outcomes were in the form of thrust force, drag force, pressure distribution, and velocity distribution. The result shows that four-blade thruster generates maximum thrust force as compare to other ROV thruster models. The main reason behind this higher thrust force is due to the larger motion of the fluid. Similarly, drag force was also investigated and observed that the drag force is greater for thruster model 3, having four blades due to the large frontal area of the ROV body and thruster blades. The results obtained in this study are very helpful for engineers and researchers to design and optimize ROV models using numerical methods.
Fabrication and Performance Study of an Unmanned Under Water Vehicle
2019
Construction as well as performance of an unmanned underwater vehicle is discussed in this paper. The unmanned underwater vehicle is developed to exploit the underwater environment. The body is torpedo shaped. Its length and diameter are 0.56 m and 0.254 m respectively. Different components of the vehicle are made by aluminum to reduce the weight. Four submersible pumps are used in two ballast tanks for water intake and exert through two solenoid valves. One propeller is used and a rudder is set behind the propeller. The thrust force generated by the propeller gives forward motion to the vehicle. In the present research, an UUV is developed and experiment is conducted. During experiment, major problems were water leakage and system stability. Very little amount of water enters into the pressure hull through different joints. To avoid this situation, glue is used in different joints and tape is wrapped at the outer surface of the body. In this study it is found that this small flat f...