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Ruosi Zha, Kai Wang, Jianglong Sun, Haiwen Tu and Qi Hu
In this paper, the ditching performance of a seaplane model on calm water and a uniform water current coupled with wind was numerically investigated. The overset grid technique was applied to treat the large amplitude of the body motions of the seaplane ...
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Jianfei Liu, Ping Jiang, Jun Chen, Xiaocong Zhang, Minzi Xu, Defan Huang and Yixin Shi
This study aimed to design a counter-rotating dual-axis spiral ditcher to address the problems of the lack of ditching models, low ditching quality, and high power consumption in ditching operations in hilly and mountainous orchards. By establishing a di...
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Feng Tian, Haibin Shi, Qingfeng Miao, Ruiping Li, Jie Duan, Xu Dou and Weiying Feng
The subsurface pipe drainage project is essential in farmland drainage operations and is globally recognized as an effective saline?alkali land improvement measure owing to its efficient drainage capacity and low land occupation rate. This study aimed to...
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Yang Niu, Jiyuan Zhang, Jiangtao Qi, Hewei Meng, Huijie Peng and Jiahao Li
Aiming at the problems of low uniformity and utilization rate in the traditional deep application method of orchard manure, a soil?fertilizer collision mixing and mulching device was designed. The ditching mechanism, the structure of the soil divider, an...
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Xingyu Wang, Yurong Tang, Haipeng Lan, Yang Liu, Yong Zeng, Zhihui Tang, Yichuan He and Yongcheng Zhang
This study designed two levels of quantitative fertilizer distribution to investigate precision fertilization applications in orchards in South Xinjiang, China, which have vast rows and narrow plant spaces. The machine comprised a base frame, a ditching ...
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Dejiang Liu, Yan Gong, Xuejun Zhang, Qingxu Yu, Xiao Zhang, Xiao Chen and Yemeng Wang
Codonopsis pilosula is cultivated mainly in sandy soils, especially in the Dingxi area of the Gansu province, northwest China. They are mainly planted in hilly areas, where large machines cannot reach easily. Codonopsis pilosula transplanting has been ad...
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Lan Jiang, Qing Tang, Jun Wu, Wenyi Yu, Min Zhang, Dong Jiang and Dexin Wei
In order to satisfy the soil preparation requirements of a rapeseed combined transplanter in the middle-lower Yangtze River region in China where rice?rapeseed rotation cropping system was performed, a seedbed preparation machine composed of a rotary til...
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Wei Yan, Mingjuan Hu, Kun Li, Jia Wang and Wenyi Zhang
In view of the problems of the difficulties faced in horizontal planting; high labor intensity, poor operation quality and low economy in the existing sweet potato bare seedling transplanting technology and equipment, combined with the agronomic requirem...
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Maximilian Müller, Malte Woidt, Matthias Haupt and Peter Horst
An important element of the process of aircraft certification is the demonstration of the crashworthiness of the structure in the event of an emergency landing on water, also referred to as ditching. Novel numerical simulation methods, that incorporate t...
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John S. Richardson
Headwaters, the sources of all stream networks, provide habitats that are unique from other freshwater environments and are used by a specialised subset of aquatic species. The features of headwaters that provide special habitats include predator-free or...
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