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Iuliana Gageanu, Gabriel Gheorghe, Catalin Persu, Nicolae-Valentin Vladu?, Dan Cujbescu, Mihai Gabriel Matache, Iulian Voicea, George-Catalin Ion, Ana-Maria Tabara?u, Sorin Petru? Boruz and Lorena-Diana Popa
This paper presents theoretical and experimental research on the process of calibrating corn seeds using a specialized equipment with cylindrical sieves, studying the influence of process parameters and corn seed particularities on the quality of the cal...
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Nanxuan Qiao, Tielin Ma, Jingcheng Fu, Ligang Zhang, Xiangsheng Wang and Pu Xue
The rising interest in the evolvability of electric vertical takeoff and landing (eVTOL) promises substantial potential in the field of urban air mobility (UAM). Challenges in energy storage density and geometry restriction both emphasize the propeller e...
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Rahul Gulia, Abhishek Vashist, Amlan Ganguly, Clark Hochgraf and Michael E. Kuhl
The fourth industrial revolution focuses on the digitization and automation of supply chains resulting in a significant transformation of methods for goods production and delivery systems. To enable this, automated warehousing is demanding unprecedented ...
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Selcuk Aslan and Tugrul Oktay
The increasing usage of unmanned aerial vehicles (UAVs) and their variants carrying complex weapon systems, known as unmanned combat aerial vehicles (UCAVs), has triggered a global revolution in complex military and commercial operations and has attracte...
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Yoo-Chul Kim, Kwang-Soo Kim, Seongmo Yeon, Young-Yeon Lee, Gun-Do Kim and Myoungsoo Kim
This study proposes machine learning-based prediction models to estimate hull form performance. The developed models can predict the residuary resistance coefficient (CR" role="presentation">????CR
C
R
), wake fraction (wTM" role="presentation">??????wTM...
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Jozef Jurko, Martin Mi?kiv-Pavlík, Vratislav Hladký, Peter Lazorík, Peter Michalík and Igor Petru?ka
One of the most important operations in the technological production process is the inspection of the manufactured product. The gradual wear of the tool affects the achievement of the required quality of the functional surfaces. In this research, we pres...
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Hongming Cai, Zhuoran Zhang and Shuanghou Deng
Recently, ducted fan unmanned aerial vehicles (UAVs) have attracted considerable attention due to their potential for application in both civil and military missions. Compared with free propellers, the presence of duct can in principle decrease the flow ...
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Daehan Lee, Sanggi Ko, Jongyeol Park, Yong Cheol Kwon, Shin Hyung Rhee, Myungjun Jeon and Tae Hyung Kim
The present study aims to reduce the pitch motion of an assault amphibious vehicle system in seaways by waterjet impeller revolution rate control. A series of seakeeping tests were performed in a towing tank with a 1/4.5-scale model. This vehicle is manu...
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Shin-Pyo Choi, Jae-Ung Lee and Jun-Bum Park
The enlargement of ships has increased the relative hull deformation owing to draft changes. Moreover, design changes such as an increased propeller diameter and pitch changes have occurred to compensate for the reduction in the engine revolution and con...
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Handan Huang, Li Jiang, Yiyun Yao, Zhong Zhang, Zhanshan Wang and Runze Qi
The laterally graded multilayer collimator is a vital part of a high-precision diffractometer. It is applied as condensing reflectors to convert divergent X-rays from laboratory X-ray sources into a parallel beam. The thickness of the multilayer film var...
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