... ABSTRACT The influence of high frequency ultrasonic waves on the bubble wake features of underwater vehicles is experimentally studied. The experimental results show that under the action of the high frequency ultrasonic wave, the bubble wake feature intensity of the underwater vehicle...

... ABSTRACT For the purpose of studying the feasibility of deep-sea vehicles with damping plate deceleration mechanism achieving a safe water-exit velocity, the hydrodynamic coefficients of body and mathematical model of the damping plate deceleration mechanism are estimated by using...

... ABSTRACT The exploration of narrow and tortuous underwater caves requires a flexible underwater swivel vehicle. This paper proposes a small, low-power, and super-maneuverable spherical underwater vehicle (SUV) which is suitable for cave observation. The planetary propulsion system of the SUV...

... model of AUV, PD controller and three fuzzy controllers are designed: Mamdani PD controller, T-S PD controller and adaptive fuzzy controller. Based on SIMLINK platform simulation, the heading angle control curve is obtained. fuzzy logic controller vehicle characteristic machine learning...

... vehicles and autonomous underwater gliders in the previous studies. These vehicles equip various types of instruments including an OBEM (Ocean Bottom Electro-Magnetometer). They are promising instruments for marine environment survey and ocean floor resources exploration. In this report, a towed...

... ABSTRACT Deep-sea sediments have the characteristics of high water content, strong compressibility, low shear strength, and relatively soft. Mining vehicles will experience substantial sinkage when operating on the seabed, and additional compaction resistance and bulldozing resistance...

... many ships, containers, vehicles, and other debris ashore. Hiroi et al. (2012) reported that tsunami debris and oil spilled from damaged oil complexes caused fires on the sea surface, and the fire expanded to the affected area in Kesennuma Bay, Miyagi Prefecture. In most other ports, tsunami debris...

... ABSTRACT The cavity may be attached to the surface of an axisymmetric vehicle to reduce the resistance effectively. Thus, the interactions between the free surface and the cavity during the water exit process are of importance. Based on the advantages of ALEDG method, a numerical approach...

... and Wei, 2018). metals & mining efficiency drilling ship development direction artificial intelligence upstream oil & gas maximum diving depth vehicle drilling vessel disadvantage detection deepsea exploration vessel china information deep sea exploration underwater glider...

... Abstract The mining technology of deep-sea polymetallic nodules and other mineral resources has received more attention from scholars at home and abroad. The path planning of deep-sea mining vehicles is an essential link in the mining of mineral resources. Proper path planning is vital...

... to demonstrate the robustness and effectiveness of the proposed approach. Introduction In the past few decades; autonomous underwater vehicle (AUV) has played an increasingly important role in all kinds of submerged applications; including but not limited to underwater exploration; marine geosciences...

... control of Rudder for unmanned underwater vehicle driven by x rudder Jie Gao, Guohua Xu, Bin Dong, Zhemin Huang Underwater Technology Laboratory, School of Naval Architecture and ocean Engineering, Huazhong University of Science and Technology, Wuhan, Hubei Province, China ABSTRACT conditions is put...

... Abstract The authors have been developing an autonomous underwater glider which equips an OBEM (Ocean Bottom Electro-Magnetometer). That is a hopeful instrument for the ocean floor resources explorations. The autonomous vehicle has an ability to achieve a continuous resource exploration...

...ABSTRACT ABSTRACT This paper presents a target tracking control method for a biomimetic underwater vehicle named RobCutt-II. The RobCutt-II is propelled by double undulatory fins which are distributed on both sides. In order to implement target tracking and observation in a certain distance, we...

... vehicle vehicle ducted propeller control operation simulation rotation underwater robot rotation speed artificial intelligence computational domain hydrodynamic performance propeller control motion trajectory main body robot rpm middle propeller thrust Research on Hydrodynamic...

...ABSTRACT ABSTRACT A prototypal robotic platform that consists of a small autonomous surface vehicle (ASV) and of a micro-ROV, connected by an umbilical, is described. 4G/internet connection makes it possible to operate the platform from remote location. The operator can concentrate on guiding...

... on ice from the side of vessels and vehicles. Some cracks are dangerous for vehicles and people because of reduced ice-load bearing capacity, while a large number of visually observable cracks allow to cross them without any restrictions. The experience of ice-technological work performance and cargo...

... for the interactions between the two blade rows and the vehicle body. The LSM designs the CRP, and predicts the pressures, forces and moments of the CRP. The impact of the CRP on wake field is modelled by converting the pressure forces on blades to radial distributed body force inside the flow domain. And the steady...

...ABSTRACT ABSTRACT A study on the hydrodynamic characteristics of a bluff-body vehicle (amphibious vehicle) model was conducted numerically. The Reynoldsaveraged Navier-Stokes method combined with Realizable k-ε turbulence model was applied in the calculation, overset mesh technology...

...ABSTRACT ABSTRACT The authors have been developing an autonomous underwater glider which equips an OBEM (Ocean Bottom Electromagnetometer). That is a hopeful instrument for the ocean floor resources explorations. The autonomous vehicle has an ability to achieve a continuous resource exploration...