张仲志,吕建刚,宋彬,高飞.水面矢量推进器仿生设计与试验[J].农业机械学报,2016,47(10):405-412.
Zhang Zhongzhi,Lü Jian’gang,Song Bin,Gao Fei.Bionic Design and Experiment of Water-surface Vector Propeller[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(10):405-412.
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水面矢量推进器仿生设计与试验   [下载全文]
Bionic Design and Experiment of Water-surface Vector Propeller   [Download Pdf][in English]
投稿时间:2016-02-02  
DOI:10.6041/j.issn.1000-1298.2016.10.053
中文关键词:  矢量推进器  仿生结构  力学性能  试验
基金项目:国家部委项目(NHA15063)
作者单位
张仲志 军械工程学院 
吕建刚 军械工程学院 
宋彬 军械工程学院 
高飞 军械工程学院 
中文摘要:以蛇怪蜥蜴为仿生对象,基于蛇怪蜥蜴股骨旋转带动两脚踏水的高速运动行为,设计了水面仿生矢量推进器,增加了驱动力输出维数,实现了可控的托举力、推进力和转矩输出。结合RNG k—ε湍流方程和PISO算法,构建推进器的流体动力学模型,获得了叶片径向和轴向的最优设计形状,推导了驱动力与叶片长度和宽度的数学函数。最后,搭建矢量推进器试验系统,验证了数值计算模型的正确性;进行两栖车辆样机试验,矢量推进器驱动车体实现了10.6°仰角状态的滑水航行,为水面装置减阻提速提供了一种新思路。
Zhang Zhongzhi  Lü Jian’gang  Song Bin  Gao Fei
Ordnance Engineering College,Ordnance Engineering College,Ordnance Engineering College and Ordnance Engineering College
Key Words:vector propeller  bionic structure  mechanical property  experiment
Abstract:To evade predators, basilisk lizards can run across water surface with rolling pelvic to drive foot movement. Based on the mechanism of high-speed air-water interface movement, bionic water-surface vector propeller was designed according to bionic object basilisk lizards. With providing lift, thrust and moment, dimension of driving force was increased. For controlling the output of driving force, the influence of structure parameters on mechanical property was analyzed. Combined with standard k—ε turbulence function and PISO algorithm, fluid dynamics model of bionic propeller was established to calculate the mechanical properties of vector propeller with different parameters. By analyzing the changes of mechanical characteristic curve with time, it was found that three dimensional driving forces presented periodical variation. And the frequencies of driving forces were four times as much as those of rotation velocity. From comparison of the three dimensional mechanical properties, the optimal axis shape and diameter shape of blade were obtained. Meanwhile, the functions between driving force and length and width of blade were derived with data fitting. By analyzing the distribution of impeller pressure and water volume, solid—liquid mutual action of impeller rotating at water surface was presented. Finally, the experiment system of vector propeller was set up and the computed force was consistent with experiment result in general, therefore it was validated that the numerical calculation model was correct. In hydroplaning state on the surface of water, the resistance of high speed boat can be reduced and the top speed can reach 80km/h. For transforming navigation state, a new amphibious vehicle with a pair of vector propellers mounted in the rear part was presented. Hydroplaning state of amphibious vehicle with pitch angle of 10.6° was realized, and the design provided a new thought for reducing resistance and improving velocity for water-surface device.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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