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现代军用地面雷达装载设计的若干问题 被引量:9
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作者 戚仁欣 《专用汽车》 2002年第1期12-16,共5页
现代军用地面雷达的机动能力在更大程度上依赖于运载系统 ,以汽车为主体的轮式运载系统一直是战场地面运输的主要形式。就某些雷达新品装载设计中的雷达载车的选型、须安装的专用功能装置、改装、超限和超载等问题进行了探讨。
关键词 军用地面雷达 装载设计 雷达运载车 机动性 越野性 技术要求
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军用地面雷达装载设计技术探讨 被引量:8
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作者 程辉明 《电子机械工程》 2002年第3期1-5,16,共6页
提高地面雷达机动性是对付雷达所面临“四大威胁”较为有效的措施 ,而机动性的提高很大程度取决于运载系统的性能。文章从载车选型、载车改装、性能计算等几方面就军用地面雷达装载设计中的一些问题谈了自己的思想 。
关键词 军用地面雷达 装载设计 机动性 载车选型 载车改装 汽车 机动轮 自动调平
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“华虎”号多功能工作船装载设计研究
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作者 彭必业 《科技与管理(武汉)》 2015年第3期1-4,共4页
“华虎”号是一型为深水海域油气资源勘探开采工程装备提供多种配套作业服务的多用途海洋工程辅助船。由于该船用途多样化,所以船舶装载工况繁多且需在装载设计中考虑船舶稳性等方方面面问题。本文通过对现行规范规则的研究,总结出该... “华虎”号是一型为深水海域油气资源勘探开采工程装备提供多种配套作业服务的多用途海洋工程辅助船。由于该船用途多样化,所以船舶装载工况繁多且需在装载设计中考虑船舶稳性等方方面面问题。本文通过对现行规范规则的研究,总结出该类船舶装载设计技术的特点。 展开更多
关键词 多功能工作船 装载设计 完整稳性 破损稳性
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凯特迪尔KAT-1404拖拉机前装载设计开发
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作者 刘美荣 张广庆 +1 位作者 王宁 何继凤 《江苏农机化》 2009年第4期26-27,共2页
徐州凯尔机械有限公司是生产大马力轮式拖拉机的专业企业。为了符合现代市场上一机多用、拖拉机多功能化的要求和扩大凯尔大马力拖拉机的市场份额,该公司在凯尔1404拖拉机上加装前装载,以满足用户的要求。
关键词 大马力轮式拖拉机 装载设计 开发 凯特 大马力拖拉机 市场份额 一机多用 多功能化
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越野汽车超载问题初探 被引量:1
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作者 戚仁欣 《现代电子》 2000年第4期53-57,共5页
大力提高机动性和可靠性已经并列成为现代军用地面雷达研制中的当务之急和关注热点。其机动性很大程度上受制于以越野汽车为主体的轮式运载系统,雷达装载设计的规范化因此当然受到重视。本文围绕雷达装载设计中的超载问题提出了自己的看... 大力提高机动性和可靠性已经并列成为现代军用地面雷达研制中的当务之急和关注热点。其机动性很大程度上受制于以越野汽车为主体的轮式运载系统,雷达装载设计的规范化因此当然受到重视。本文围绕雷达装载设计中的超载问题提出了自己的看法:首先从上装与载车的匹配关系着眼把可移式、机动式雷达归纳为公路运输型、一般越野型和高度越野型三个类别;继而实事求是地分析了超载现象,遵循“宁超勿偏”、“超而不过”原则分别对三类雷达车的超载程度进行了定量限制;最后提出了机动式雷达的基本特征和避免过度超载的有效途径。 展开更多
关键词 越野汽车 雷达载车 机动性 超载 装载设计
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Design of Vibrating String Pressure Sensor
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作者 郑丰隆 王丽玲 +1 位作者 钟亚飞 王永忠 《Journal of Measurement Science and Instrumentation》 CAS 2011年第1期52-54,共3页
The vibrating string pressure sensor is designed according to the working surroundings and conditions. this sensor is used for the weighing of the fixed-quantity bucket loader in the main shaft lifting systems of coal... The vibrating string pressure sensor is designed according to the working surroundings and conditions. this sensor is used for the weighing of the fixed-quantity bucket loader in the main shaft lifting systems of coal mines. The design of the sensor has been introduced in detail. Calibrations and errors of the sensor theoretical fornada have also been analyzed. 展开更多
关键词 vibrating string sensor WEIGHING CALIBRATION
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小型模块化超级安全气冷堆中子学特性研究 被引量:4
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作者 张成龙 堵树宏 +3 位作者 刘国明 霍小东 杨海峰 邵增 《核动力工程》 EI CAS CSCD 北大核心 2019年第6期13-19,共7页
为分析小型模块化超级安全气冷堆堆芯中子学特性,建立六棱柱燃料组件模型,利用蒙特卡罗程序和ORIGEN程序的耦合计算,研究TRISO颗粒致密度、燃料富集度、TRISO颗粒大小、栅距比、TRISO颗粒包层厚度和燃料棒直径等物理参数对寿期等特性的... 为分析小型模块化超级安全气冷堆堆芯中子学特性,建立六棱柱燃料组件模型,利用蒙特卡罗程序和ORIGEN程序的耦合计算,研究TRISO颗粒致密度、燃料富集度、TRISO颗粒大小、栅距比、TRISO颗粒包层厚度和燃料棒直径等物理参数对寿期等特性的影响。研究结果表明,寿期长度随着燃料富集度、栅距比的增大而单调增大;燃料棒直径、TRISO颗粒致密度、TRISO颗粒尺寸大小对寿期长度也有一定的影响;TRISO颗粒包层厚度对寿期长度的影响很小。基于该结果,初步设计出小型模块化超级安全气冷堆的堆芯装载方案,其寿期满足20 a不换料的寿期长度要求。 展开更多
关键词 小型模块化超级安全气冷堆 组件模型 燃耗特性 堆芯装载设计
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Construction of a small-caliber tissue-engineered blood vessel using icariin-loaded β-cyclodextrin sulfate for in situ anticoagulation and endothelialization 被引量:8
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作者 Jingyuan Yang Keyu Wei +9 位作者 Yeqin Wang Yanzhao Li Ning Ding Da Huo Tianran Wang Guanyuan Yang Mingcan Yang Tan Ju Wen Zeng Chuhong Zhu 《Science China(Life Sciences)》 SCIE CAS CSCD 2018年第10期1178-1188,共11页
The rapid endothelialization of tissue-engineered blood vessels(TEBVs) can effectively prevent thrombosis and inhibit intimal hyperplasia. The traditional Chinese medicine ingredient icariin is highly promising for th... The rapid endothelialization of tissue-engineered blood vessels(TEBVs) can effectively prevent thrombosis and inhibit intimal hyperplasia. The traditional Chinese medicine ingredient icariin is highly promising for the treatment of cardiovascular diseases.β-cyclodextrin sulfate is a type of hollow molecule that has good biocompatibility and anticoagulation properties and exhibits a sustained release of icariin. We studied whether icariin-loaded β-cyclodextrin sulfate can promote the endothelialization of TEBVs. The experimental results showed that icariin could significantly promote the proliferation and migration of endothelial progenitor cells; at the same time, icariin could promote the migration of rat vascular endothelial cells(RAVECs). Subsequently,we used an electrostatic force to modify the surface of the TEBVs with icariin-loaded β-cyclodextrin sulfate, and these vessels were implanted into the rat common carotid artery. After 3 months, micro-CT results showed that the TEBVs modified using icariin-loaded β-cyclodextrin sulfate had a greater patency rate. Scanning electron microscopy(SEM) and CD31 immunofluorescence results showed a better degree of endothelialization. Taken together, icariin-loaded β-cyclodextrin sulfate can achieve anticoagulation and rapid endothelialization of TEBVs to ensure their long-term patency. 展开更多
关键词 tissue-engineered blood vessels (TEBVs) icariin β-cyclodextrin sulfate ANTICOAGULATION ENDOTHELIALIZATION
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A new closed-form method for inertia force and moment calculation in reciprocating piston engine design 被引量:1
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作者 XIE ZhiFeng XU QuanYong +1 位作者 GUAN NanXiang ZHOU Ming 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2018年第6期879-885,共7页
The piston crank mechanism is an important component of a reciprocating piston engine. It is an inherent vibration system, and as such, the calculation of unbalance quantity is a critical procedure in balancing mechan... The piston crank mechanism is an important component of a reciprocating piston engine. It is an inherent vibration system, and as such, the calculation of unbalance quantity is a critical procedure in balancing mechanism design, which is adopted to balance inertia loading. The traditional method usually applies a Taylor series expansion with the crank-conrod ratio, then a Fourier transform with the crank angle. The Taylor expansion generally ignores the influence on calculations resulting from the high order terms. However, the high order terms of the Taylor expansion will also contribute to the low order terms in the Fourier series. This will induce poor precision in the inertia loading calculation, especially in a high crank-conrod ratio engine. Thus, this paper proposes a new closed-form method, which only adopts a Fourier transformation for the calculation. The coefficients of the Fourier transformation terms contain the contributions of all order terms of the crank-conrod ratio. Therefore, we named it as a closed-form method. Compared with the traditional method, the closed-form method improves the numerical accuracy of the secondary reciprocating inertia force by 1.5%–4%, when the crank-conrod ratio varies from 0.25 to 0.4. Using this new closedform method to design a balancing mechanism, the primary and secondary reciprocating inertia forces can be completely balanced. For an engine, where the primary and secondary inertia forces are balanced, the ratio of the residual inertia force to the total inertia force using the traditional method is 1.5%, while the ratio decreases to 0.5% using the closed-form method. The closed-form method is independent of engine configurations, including centric and eccentric engines, and single and multicylinder engines. Examples of applications using the proposed method are provided. 展开更多
关键词 piston engine BALANCE inertia loading closed-form VIBRATION
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