High pressure waterjet propulsion with thrust vector control system applied on underwater vehicles

Zhang, Zuti; Cao, Shuqian; Shi, Weichao; Luo, Xiaobing; Wang, Huawei; Di, Jia; Zhu, Yuquan

doi:10.1016/j.oceaneng.2018.03.009

Cited by 17 publications

(7 citation statements)

References 22 publications

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“…As shown in Eq. (3)(4)(5)(6)(7)(8)(9), each of the sun, ring, carrier and 3 planets are treated as rigid bodies. Component bearings are modeled by linear springs.…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

“…These special characteristics make it widely used in underwater equipment, such as variable ballast system (VBS), bilge drainage system, high pressure water mist fire suppression system, high pressure waterjet propulsion system, etc. [4][5][6][7][8]. With the missions of underwater equipment becoming increasingly complex and varied, such as military applications, inspection of underwater structures, exploration of unknown environments, oceanographic observations, submarine rescue, underwater animal behavior research, and so on [9], the underwater equipment with better stability, higher reliability, lower vibration and noise radiation characteristics is strongly required.…”

Section: Introductionmentioning

confidence: 99%

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Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

et al. 2021

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Seawater hydraulic piston pump has been widely used in ocean engineering and become a key power component for underwater equipment due to its inherent characteristic such as energy conservation and environment friendly. As one of the most important properties of seawater hydraulic piston pump, vibration would further determine the stability, reliability and stealth of underwater equipment. In this paper, the dynamic of a novel crankshaft seawater piston pump with gearbox are analyzed theoretically, illustrating the dramatically effect of the gearbox on the vibration characteristic of the seawater hydraulic piston pump. Then, a new type crankshaft seawater hydraulic piston pump system driven by a permanent magnet synchronous motor instead of asynchronies motor is proposed in order to eliminate the gearbox and improve the vibration characteristics. In addition, the vibration characteristic of this new type crankshaft seawater hydraulic piston pump system driven by asynchronous motor and permanent magnet synchronous motor are studied and compared experimentally. The experiment results indicate that the seawater hydraulic piston pump system driven by permanent magnet synchronous motor eliminating the gearbox has lower vibration acceleration level in comparison with the pump system driven by asynchronous motor and gearbox. The vibration acceleration level can be reduced from 7dB to 4.3dB. Driving the seawater hydraulic piston pump by permanent magnet synchronous motor instead of asynchronous motor is of benefit to eliminating the gearbox and reducing the vibration excitation source. Consequently, the vibration characteristic of the seawater hydraulic piston pump system driven by a permanent magnet synchronous motor is significantly improved.

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“…As shown in Eq. (3)(4)(5)(6)(7)(8)(9), each of the sun, ring, carrier and 3 planets are treated as rigid bodies. Component bearings are modeled by linear springs.…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

et al. 2021

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“…A previous simulation review of waterjet propulsion found that the performance of a convergent nozzle is higher than that of a combination nozzle, with various values ranging from 8% to 12% [27]. High-pressure waterjet propulsion analysis with a pressure vector control system used on underwater vessels has provided an overview of a system with controls that can effectively suppress overshoot and has shown better stability [28]. Another numerical study on the unsteady hydrodynamic performance of the waterjet impeller found that when the speed increases, the waterjet pump efficiency will decrease by 0.25% [29].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of waterjet propulsion on an unmanned surface vehicle model

Budiyanto

Ayuningtyas

2021

J Appl Eng Science

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Waterjet propulsion on an unmanned surface vehicle is a propulsion system with the working principle of taking water from the bottom of the hull into the turbine to be blown back out and converted into the ship's thrust. The resulting thrust depends on the available water forces. The water spray in the nozzle is generated from the inlet at the bottom of the ship which is assisted by a pump on the waterjet. In the inlet section, this will affect the distribution of flow that will pass through the pump and finally out through the nozzle. The purpose of writing this thesis is to analyze the inlet-passage of the waterjet which is variable with the inlet velocity ratio (IVR) to get the maximum efficiency value of the waterjet propulsion system. The work of this thesis uses the computational fluid dynamics (CFD) method and analytical calculations. The inlet velocity ratio is varied from 0.54, 0.59, 0.67, 0.78, 0.94, 1.18, 1.64, and 2.38 which will be compared the results. From the results of the analysis will be obtained the volume that comes out of the waterjet and the results will be obtained the thrust value. The highest thrust value obtained is based on the variation in the IVR value of 2.38, and the maximum efficiency value is 98%.

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“…The propulsor is the power source of the underwater vehicle. Many experts and scholars do a lot of studies on it [2][3][4]. Some novel propulsors have been designed [5,6].…”

Section: Introductionmentioning

confidence: 99%

Rotational speed control of magnetic coupling with variable damping method

Zhang

Liu²

2020

Mechanics & Industry

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Permanent Magnetic Coupling (PMC) is used in underwater vehicle to transmit torque from the motor to propeller without leakage and friction. Output rotational speed stability of PMC is an important index indicating the PMC output makes smaller vibration. To improve the stability of the output rotational speed, PMC dynamic characteristic was analyzed based on Lagrange equation in this paper. The dynamic characteristic was indicated by the angular phase generated by the master rotor and the slave rotor. The angular phase varied with the damping coefficient, torsional rigidity and rotational inertia of PMC. These parameters' influence on the angular phase was analyzed and the results revealed the rules between these parameters and the angular phase. Based on the rules, a variable damping method was proposed to control the angular phase. The angular phase changed smoothly with this method that was used to design a variable damping controller based on electromagnetic damping effect principle. This method was verified by theoretical calculation and finite element analysis (FEA). Finally, a novel variable damping PMC was designed to improve the output rotational speed stability of PMC.

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High pressure waterjet propulsion with thrust vector control system applied on underwater vehicles

Cited by 17 publications

References 22 publications

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

Performance analysis of waterjet propulsion on an unmanned surface vehicle model

Rotational speed control of magnetic coupling with variable damping method

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