scholarly journals Innovative Energy-Saving Propulsion System for Low-Speed Biomimetic Underwater Vehicles

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8418
Author(s):  
Paweł Piskur ◽  
Piotr Szymak ◽  
Michał Przybylski ◽  
Krzysztof Naus ◽  
Krzysztof Jaskólski ◽  
...  
Keyword(s):  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Propulsion System ◽  
Forward Movement ◽  
Propulsion Systems ◽  
Low Speed ◽  
Structure Interaction ◽  
Fluid Velocities ◽  
Different Types ◽  
Oscillation Frequencies

This article covers research on an innovative propulsion system design for a Biomimetic Unmanned Underwater Vehicle (BUUV) operating at low speeds. The experiment was conducted on a laboratory test water tunnel equipped with specialised sensor equipment to assess the Fluid-Structure Interaction (FSI) and energy consumption of two different types of propulsion systems. The experimental data contrast the undulating with the drag-based propulsion system. The additional joint in the drag-based propulsion system is intended to increase thrust and decrease energy input. The tests were conducted at a variety of fins oscillation frequencies and fluid velocities. The experiments demonstrate that, in the region of low-speed forward movement, the efficiency of the propulsion system with the additional joint is greater.

Robustness of Biomimetic Underwater Vehicles under Disturbances

2008 ◽  
Vol 58 ◽  
pp. 266-275
Author(s):  
Naomi Kato ◽  
Hiroyoshi Suzuki
Keyword(s):  
Fluid Structure Interaction ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Fluid Structure ◽  
Low Speed ◽  
Water Currents ◽  
Structure Interaction ◽  
Guidance And Control ◽  
Motion Simulator ◽  
And Control

This paper describes the utility of a suite of oscillating fins designed to optimize the hovering and low-speed maneuvering performance of an underwater vehicle from the viewpoints of guidance and control of an underwater vehicle equipped with 2 pairs of oscillating fins in water currents, development of CFD-based motion simulator and design test of flexible fins including fluid-structure interaction.

Manufacture of Propulsion Systems for Micro Underwater Vehicles

2006 ◽  
Author(s):  
Yih-Lin Cheng ◽  
Yu-Shen Shen ◽  
Jiang-Hong Lin
Keyword(s):  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Propulsion System ◽  
Outer Diameter ◽  
Propulsion Systems ◽  
Minimum Width ◽  
Valveless Micropump ◽  
Blade Thickness ◽  
Micro Pump ◽  
Micro Channels

Underwater vehicles have been used in many ocean exploration and rescue applications. Recent researches are trending toward the vehicle’s application in smaller regions. As size of the parts decreases, challenges exist in the manufacturing of critical components which are hard to obtain commercially. This paper focuses on developing the propulsion systems of the micro underwater vehicle, and exploring the feasibility of the manufacturing. The target hull size of the micro underwater vehicle that the propulsion systems use is less than 50×30×30mm. In this research, two types of propulsion systems, propeller-type and jet-type, were investigated. In the propeller-type propulsion system, a propeller with the selected electric motor was designed to generate sufficient thrust, and the blade section was based on NACA four-digit airfoils. The outer diameter of the propeller is 25 mm with a minimum blade thickness of 0.9 mm. The thin 3D blade geometry is hard to achieve by traditional manufacturing approaches. As a result, Shape Deposition Manufacturing (SDM) process, a layered manufacturing technique, was used to generate the complex 3D propeller. The thrust performance of the fabricated propeller was also compared with the theoretical thrust. The jet-type propulsion system utilized the concept of piezoelectric-actuated valveless micro-pump, and a special design with 3 inlets from the side and one outlet in the back was implemented in order to satisfy the micro underwater vehicle application. The 3D geometry of the channel with minimum width of 80 μm creates great challenges in fabrication and poses difficulty when done by traditional micro fabrication techniques. SDM process is also applied to manufacture the chamber and channels of the micropump. The piezoelectric buzzer was attached to the fabricated valveless micropump chamber for testing back pressure and flow rate. This research provides solutions to manufacture propeller-type and jet-type propulsion systems for micro underwater vehicle applications. SDM process was proved to be the suitable approach to generate small complex 3D propellers and a pre-assembled valveless micropump structure with micro channels.

scholarly journals Augmenting Maneuverability of UUVs with Cycloidal Propellers

2020 ◽  
Author(s):  
Manavendra Desai ◽  
Ruddhi Gokhale ◽  
Atanu Halder ◽  
Moble Benedict ◽  
Yin Lu Young
Keyword(s):  
Degrees Of Freedom ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Low Speed ◽  
Six Degrees Of Freedom ◽  
Hydrodynamic Motion ◽  
Screw Propeller ◽  
Heave Motion ◽  
Novel Concept ◽  
And Control

This paper investigates the novel concept of augmenting the maneuverability of underwater vehicles with cycloidal propellers. Cycloidal propellers have the potential of providing agile manoeuvring capabilities to an underwater vehicle such as enabling pure heave motion and spot turns. They will also enable the vehicle to surge in forward and backward directions with equal ease. Such manoeuvres are not possible with the more conventional screw propeller and control fin combinations. Moreover, cycloidal propellers can enable precise dynamic positioning in low speed applications like station-keeping, underwater surveying and maintenance, minesweeping and teaming activities. In this paper, manoeuvring capabilities of an underwater vehicle with conventional screw propeller and control fins only are compared with one augmented with cycloidal propellers. The cases considered include a turning circle manoeuvre, a low speed 180o turn and a low speed heave manoeuvre. A six degrees-of-freedom non-linear hydrodynamic motion prediction model was developed and validated. Simulation results demonstrated that compared to conventional propulsion systems, cycloidal propeller augmented underwater vehicles can be more swift and compact in low speed manoeuvres, making a case for further investigation into this concept.

Design and Rapid Manufacturing Structural Components of a Mini-Scale Underwater Vehicle

2011 ◽  
Vol 383-390 ◽  
pp. 6352-6356
Author(s):  
Yih Lin Cheng ◽  
Rui Dong Chang
Keyword(s):  
Rapid Prototyping ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Rapid Manufacturing ◽  
Structural Components ◽  
Propulsion Systems ◽  
Limited Space ◽  
Rapid Manufacture ◽  
Control Modules ◽  
Underwater Exploration

Underwater vehicles have been developed mainly for underwater exploration and rescue. Many large- and middle-size vehicles are available but few are in smaller scale. As the size goes into mini-scale which is less than 20 cm, it is challenging to allocate required components within limited space, while providing designed functions at the same time. The aims of this research are to design and rapid manufacture structural components for a remote-controlled underwater vehicle in the mini-scale region. The vehicle would integrate vision capability to provide functions of underwater ecological observation and tracking. In order to design the structural components for this mini-scale vehicle, commercial CFD software was adopted to simulate flows. An improved external shape was obtained and detailed designs of the structural components were implemented. A rapid prototyping technique, Shape Deposition Manufacturing (SDM) process, was utilized to rapidly manufacture these components. The finished components were assembled with control modules and propulsion systems as an underwater vehicle and the preliminary underwater test was conducted successfully.

scholarly journals Hydroacoustic System in a Biomimetic Underwater Vehicle to Avoid Collision with Vessels with Low-Speed Propellers in a Controlled Environment

Sensors ◽  
2020 ◽  
Vol 20 (4) ◽  
pp. 968 ◽  
Author(s):  
Pawel Piskur ◽  
Piotr Szymak ◽  
Krzysztof Jaskólski ◽  
Leszek Flis ◽  
Marek Gąsiorowski
Keyword(s):  
Underwater Vehicle ◽  
Careful Consideration ◽  
Obstacle Detection ◽  
Propulsion System ◽  
Controlled Environment ◽  
Next Generation ◽  
Low Speed ◽  
Moving Obstacle

In this paper, a hydroacoustic system designed for a biomimetic underwater vehicle (BUV) is presented. The Biomimetic Underwater Vehicle No. 2 (BUV2) is a next-generation BUV built within the ambit of SABUVIS, a European Defense Agency project (category B). Our main efforts were devoted to designing the system so that it will avoid collisions with vessels with low-speed propellers, e.g., submarines. Verification measurements were taken in a lake using a propeller-driven pontoon with a spectrum similar to that produced by a submarine propulsion system. Here, we describe the hydroacoustic signal used, with careful consideration of the filter and method of estimation for the bearings of the moving obstacle. Two algorithms for passive obstacle detection were used, and the results are discussed herein.

scholarly journals Innovative Energy-Saving Propulsion System for Low-Speed Biomimetic Underwater Vehicles

2021 ◽  
Author(s):  
Paweł Piskur ◽  
Piotr Szymak ◽  
Michal Przybylski ◽  
Krzysztof Naus ◽  
Krzysztof Jaskólski ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Aquatic Organisms ◽  
Propulsion System ◽  
Experimental Comparison ◽  
Underwater Robotics ◽  
Fatigue Wear ◽  
Propulsion Systems ◽  
Low Speed ◽  
Improve Energy Efficiency ◽  
The Subject

This paper describes research on a unique propulsion system design for a low-speed Biomimetic Unmanned Underwater Vehicle (BUUV). It is biomimetic in the sense that it mimics the movement of aquatic organisms. The undulating propulsion system has numerous advantages over the rotary impeller and is becoming more popular in underwater robotics. The analysis of an artificial seal’s propulsion system with two tail fins is described here. The contrast between the previous undulating propulsion system and the new one is detailed using mathematical analysis and experimental data. The experimental comparison was carried out on a laboratory test stand equipped with specialist sensor equipment to determine the energy efficiency of various types of propulsion systems. Due to a patent procedure, the innovative propulsion system presented in this work has never been published previously. The fins have extra joints, which is the subject of patent claims. The extra joint is intended to improve energy efficiency and reduce fatigue wear on the fins.

scholarly journals A review of different designs and control models of remotely operated underwater vehicle

2020 ◽  
pp. 002029402095248
Author(s):  
Ying He ◽  
Dao Bo Wang ◽  
Zain Anwar Ali
Keyword(s):  
Control Systems ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Underwater Robots ◽  
Research Papers ◽  
Underwater Environment ◽  
Different Types ◽  
Marine Technology ◽  
And Control ◽  
Published Research

This article reviews remotely operated underwater vehicle (ROUV) and its different types focusing on the control systems. This study offers a brief introduction of unmanned underwater vehicle (UUV) together with ROUV. Underwater robots are designed to work as an alternative to humans because of a difficult and hazardous underwater environment. The applications and demand of marine robots are increasing with the passage of time. There are several research articles and publications available on these topics but, a complete review of old and recent research about this technology is still hard to find. This article also assesses some recently published research papers on underwater systems. It presents the comparison of different control systems and designs of underwater vehicles. There have been major developments in marine technology depending on the needs, applications and cost of different missions. Scientists design many remotely operated vehicles based on the educational or industrial purposes. This article is presented in order to help and assist the future researchers as a massive review of the field of remotely operated underwater vehicles and their possible future developments are presented.

scholarly journals Unmanned Mine-Cleaning Underwater Vehicle Numerical Drag Prediction / Numeryczna Prognoza Charakterystyki Oporowej Bezzałogowego, Przeciwminowego Pojazdu Podwodnego

2012 ◽  
Vol 22 (1) ◽  
pp. 125-134
Author(s):  
Maciej Kaczmarczyk ◽  
Jacek Jachowski
Keyword(s):  
High Reliability ◽  
Underwater Vehicle ◽  
Underwater Vehicles ◽  
Propulsion Systems ◽  
Unmanned Underwater Vehicles ◽  
Vehicle Propulsion ◽  
The World ◽  
Pros And Cons ◽  
Drag Prediction ◽  
Main Factors

Abstract At the beginning of the XXI century unmanned underwater vehicles such as ROV or AUV became common in use around the world. They are useful, practical and helpful in many underwater works. Moreover, in many cases they can be a good replacement for men. But to secure good man-machine cooperation or substitution high reliability is required as well as safety in everyday use - especially in the Navy. Therefore, beyond functionality, these two main factors are the most important in designing and then operating such vehicles. It can be achieved in many different ways, but one of the most sensitive and prone to damage elements is vehicle propulsion system. Commonly in use bare propellers are in danger of being damaged by many different things floating under the surface. To try to avoid such situation and find an alternative solution, there was an idea to design and build the ROV powered by a waterjet drive. This paper focuses on numerical drag prediction for underwater vehicle with two different propulsion systems. The pros and cons for each solution are also presented.

scholarly journals RIM Propeller for Micro Autonomous Underwater Vehicles

2014 ◽  
Author(s):  
David Donghyun Kim ◽  
You Wu ◽  
Antoine Noel ◽  
Kamal Youcef-Toumi
Keyword(s):  
Autonomous Underwater Vehicles ◽  
Power Input ◽  
Underwater Vehicles ◽  
Propulsion System ◽  
Small Scale ◽  
Propulsion Systems ◽  
Static Water ◽  
Micro Propulsion

Micro autonomous underwater vehicles (AUVs) need small-scale, powerful and safe propulsion systems especially when they are performing missions in pipes and other confined environments. However, the most conventional propulsion systems do not satisfy all three requirements: small, powerful and safe. A micro propulsion system meeting those requirements are developed based on the RIM propeller concept. It is compact and powerful; the complete motor-propeller assembly is 33mm in diameter, 12mm in depth and 16g in weight, and it is capable of producing 0.4N thrust in static water given a 7.1W power input. The paper presents the design, manufacturing and integration of the micro RIM propeller in an AUV.

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