系留

To stability analysis of the tethered balloon, A three dimensional nonlinear mathematical model of tethered aerostat was assembled.

摘 要：为研究系留气球稳定性，建立了系留气球的三维非线性动力学模型。

The composition and function of tethered aerostat system is introduced on the basis of analyzing the overall requirements of tethered aerostat system –bome radar.

系留气球是一种应用广泛的空中平台，本文在讨论搭载雷达系留气球系统总体需求的基础上，介绍系留气球系统的组成和功能，总结系统总体设计中涉及到的关键技术，并对关键技术的解决措施进行分析。

Tethered aerostat borne radar system is an integrated information system,in which the tethered aerostat is the carrying platform and the radar is the mission system.

系留气球载雷达系统是以系留气球为搭载平台，以雷达为任务系统的一种综合信息系统，在军事和民用领域有着广阔的应用前景。

Tethered aerostat doesn't have dynamic devices, and it suspends on the upper space by buoyan -cy and cable' pull.

系留气球不具有动力装置，靠浮力和缆绳的拉力作用悬浮于高空中。

The tension stress distribution of the aerostat envelope under windless condition is obtained using the FE model, and critical regions with high stress are pointed out. The calculated value of tethering force fits well with the theoretical one. The results are instructive for the safety evaluation and design of aerostat structures.

应用此技术建立了无风载条件下浮空器囊体张应力分布的有限元分析模型，给出了囊体的张应力分布情况并指出危险应力区域，对系留力的计算值与理论值吻合较好，计算结果对浮空器结构安全评估及设计具有一定的理论指导意义。

This paper first analyses the stress acting on the cable by means of tiny segment analytical methods, establishes cable's stress equation, and finds out the relation between the tethered aerostat's position and its stress acting by cable; then, based on the momentum and moment of momentum theorem, the longitudinal nonlinear dynamic equation is established; Finally a numerical simulation of dynamic responses of the balloon and cable to gust are carried out.

本文首先通过微段分析法对缆绳进行受力分析，建立缆绳的受力方程，找出了系留气球在空中的位置同系留气球所受缆绳拉力的关系；然后根据动量和动量矩定理建立了球体的纵向非线性运动方程；最后通过数值仿真计算，对系留气球的纵向动态响应特性进行了分析。

The tethered aerostat JL-1K is an aerostat which can be taken off and kept afloat by static lift generated by lighter-than-air gas filled in the envelop.

JL-1K 系留艇是靠填充轻于空气的气体产生的静升力升空、滞空的浮空器。

A finite element model is proposed to calculate the mechanical state of a moored aerostat system. The difficulty in matching the loads of the tethers is overcome by releasing the tether constraints and applying the load step by step. The causes of non-convergence during computation is investigated and solved by modifying the criterion appropriately.

针对浮空器地面系留系统采用多级系绳集束设计导致有限元建模中系留力难以施加的问题，提出了分步加载，对系绳节点逐级建立载荷匹配关系的建模技术；对囊体局部应力集中导致计算难以收敛的问题进行了分析并提出解决方法。

This paper introduces emphatically the technology of oversea tethered balloon-borne surveillance radar system, its developmental status and applications,differends units of this system.

一、引言系统均是采用的系留气球。进入80年代以来，随着军事技术、战术理论以及常规武器现代化的发展，各国均十分重视发展本国的远程监视雷达系统。

This article first introduces the surveys of marine monitoring buoy, elaborates many kinds of form in buoy mooring, then illustrates the tighten elastic mooring technology, analyses the requirement of material choice and technical specification in each part of the buoy. It also demonstrates the concrete technology in attachment devices and proves the usage of tighten elastic mooring technology in this project.

文中首先介绍了海洋监测浮标的概况，论述了浮标锚系的多种形式，然后对绷紧式弹性系留技术进行了阐述；分析了材料的选择要求、部件的技术指标；对接头装置的具体技术进行了论述；作为一种锚泊手段，对绷紧式弹性系留技术在小浮标中的应用进行了相关论述；最后对研制过程中的相关试验进行了阐述。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失