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Zhaoyong Mao, Tianqi Zhang, Guangyong Yang and Wenlong Tian
Gurney flaps can enhance the hydrodynamic efficiency of airfoils, and they are currently used in several applications, including racing cars and wind turbines. However, there is a lack of studies in the literature on the application of Gurney flaps on th...
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Xiaodong Liu, Yuli Hu, Zhaoyong Mao, Wenjun Ding and Shiyu Han
This study investigates the effectiveness of UUV formations during navigation to designated target areas. The research focuses on propeller-equipped UUVs and employs a computational fluid dynamics (CFD) methodology to analyze the hydrodynamic interaction...
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Bo Cheng, Shengzhao Pang, Huanyu Ou, Zeyan Hu and Zhaoyong Mao
Underwater vehicles have been widely used in marine exploration and development. A contra-rotating propeller (CRP) can improve propulsion efficiency, eliminate the roll moment of the propeller acting on underwater vehicles, and significantly improve the ...
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Peiyu Chen, Chengyi Lu, Zhaoyong Mao, Wenlong Tian, Liteng Zeng, Mengjie Li, Jiming Zhang and Bo Li
Storage and discharge conditions of primary lithium batteries are studied and the capacity estimation models during the whole life cycle of underwater vehicles is developed based on temperature. The storage experiments for 90 days at different temperatur...
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Yukai Li, Yuli Hu, Youguang Guo, Baowei Song and Zhaoyong Mao
Permanent magnet couplings can convert a dynamic seal into a static seal, thereby greatly improving the stability of the underwater propulsion unit. In order to make full use of the tail space and improve the transmitted torque capability, a conical Halb...
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Yushan Wang, Baowei Song and Zhaoyong Mao
Underwater wireless power transfer (WPT) technology can enhance the endurance of the autonomous underwater vehicles (AUV). WPT that based on electromagnetic theory will generate eddy current loss (ECL) in seawater. In this paper, we make use of shielding...
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Huanyu Ou, Yuli Hu, Zhaoyong Mao and Yukai Li
How to reduce the cogging torque of the integrated propeller motor is an important means to improve its noise performance because cogging torque is one of the key factors causing torque ripple. We proposed a method to reduce the cogging torque by optimiz...
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Yukai Li, Yuli Hu, Baowei Song, Zhaoyong Mao and Wenlong Tian
Permanent magnet couplings (PMCs) are widely used in underwater propulsion because it can solve the deep-sea sealing problem effectively. In this paper, a new type of conical permanent magnet coupling (CPMC) is proposed, which is able to match the tail s...
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Zhigao Dang, Zhaoyong Mao and Wenlong Tian
Loud hydrodynamic noise is not only potentially harmful to the health of organisms in the ocean, but it is also a threat to the survival of underwater vehicles. Different from the general noise reduction technologies at present, a new idea for a flow-ind...
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Zhigao Dang, Zhaoyong Mao, Baowei Song and Wenlong Tian
Operating horizontal axis hydrokinetic turbine (HAHT) generates noise affecting the ocean environment adversely. Therefore, it is essential to determine the noise characteristics of such types of HAHT, as large-scale turbine sets would release more noise...
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