标准轨道

基于CMAC网络的飞行器再入标准轨道制导

Reentry Trajectory Guidance Design for Hypersonic Vehicles Based on CMAC Network

RLV再入标准轨道制导与轨道预测制导方法比较分析制导方法大概可以分为两大类：基于参考弹道的标准轨道法和预测制导法。

Comparisons Between Reference-trajectory and Predictor-corrector Entry Guidances for RLVs The guidance design methods may be classified into two main categories : nominal trajectory-based techniques and on-line trajectory prediction schemes .

进一步对两种制导方法进行了比较分析研究，研究认为标准轨道制导与轨道预测制导都是可行的RLV再入制导方案，其有机结合是未来可重复使用跨大气层飞行器再入制导的发展趋势。

Comparisons between the two guidance schemes were performed , and simulation results show that the two guidance methods are feasible , which indicates that the integration of reference-trajectory entry guidance and predictor-corrector entry guidance is a promising entry guidance scheme for future RLVs .

实例中对机车动力学模型输入标准轨道谱，分析其在标准轨道谱的随机激励下车体结构的响应特征，并对动力学平稳性结果进行部分评价。

It analyzed the characteristics of the locomotive-body ′ s structure response by stochastic excitation with input data of standard railway stochastic spectrum and partially evaluated its dynamic smoothness results .

如果印度不想再争取经济影响力中落后就必须行动了，因为地理上和标准轨道都对中国有利。

India needs to get a move on if it doesn 't want to be left behind in a contest for economic influence in which geography and standard gauge probably both favour China .

在飞船再入标准轨道设计和再入机动边界计算的基础上，研究了基于标准轨道法的飞船再入飞行制导规律。

After designing the standard reentry trajectory of the spaceship and calculating the reentry maneuvering borderline , the reentry guidance rule on the basis of standard trajectory is approached in details in this paper .

按照机车、车辆车轮与标准轨道的实际几何关系建立了三维有限元模型，并采用有限元参数二次规划法求解轮轨弹塑性接触问题。

A 3D finited element method contact model of wheelset and track is constructed , in which locomotive and vehicle wheelset are respectively considered . The wheel / rail 3D elastic-plastic contact problem is analyzed by using the parametric finite element method and quadratic programming method .

文章探讨利用遗传算法（GA）来自动设计标准返回轨道。

This paper studies that Genetic Algorithm ( GA ) is used to automatically design the standard return trajectory .

实际需求促生了更适应ROI重建的各类非标准螺旋轨道的创建与应用。

Practical needs have called for creations and applications of various non-standard helical trajectories for better ROI reconstruction .

基于遗传算法的载人航天器标准返回轨道设计

Design standard return trajectory of manned spacecraft based on genetic algorithm

通过仿真表明，遗传算法在标准返回轨道设计中具有一定的优越性。

Simulation shows that GA has advantage for designing the standard return trajectory .

目前，水利血防工作正在走上制度化、规范化、标准化轨道。

At present , work of the water conservancy and schistosomiasis control is coming into institutionalization , normalization and standardization .

载人航天器返回时，根据任务的要求，需要设计一条标准返回轨道，作为制导时的参考轨道。

According to the task , must design a standard return trajectory which is reference trajectory for guidance when a manned spacecraft returns .

载人飞船返回再入轨道设计的主要任务是确定出标准返回轨道和再入制导规律。

Task of designing reentry trajectory of manned spacecraft is to make standard reentry trajectory and laws of guidance and control according to requirement of task .

树立国际型人才观，加速中国高等护理教育走上国际标准化轨道，培养具有国际服务意识、国际竞争能力的创新型护理人才，已成为目前我国高等护理教育面临的挑战。

Setting up a view of international professional , accelerating Chinese higher nursing education steps to standardize path and cultivating nursing profession with international competition ability have become our new challenge .

工程建设模式和管理体系逐渐步入了专业化、科学化和标准化的轨道。

The engineering construction model and engineering management system gradually step into specialized , scientific and standard rails .

介绍了我国城市轨道交通技术装备的基础标准和城市轨道交通类型选择标准。

With an introduction to the basic standards for technical equipment and UMT patterns in China , this paper analyses the level of UMT equipment development .

由于推导过程中卫星轨道采用了标准的椭圆轨道模型和地球的椭球体模型，从而解决了传统的近似计算方法所带来的残余偏差较大的问题。

Standard elliptical orbit model as well as earth ellipsoid model is assumed in the course of development , thus the bias caused by conventional approximation is eliminated .

《劳动合同法》的出台，赋予劳务派遣合法身份，要求用工单位和派遣单位各司其职，对被派遣劳动者以双重保护，在保留劳务派遣特色同时将其纳入标准化用工轨道。

The introduction of the Labor Contract Law give legal status in the labor dispatch , clarifying the legal obligations and responsibility . It gives the double protection to the laborers dispatched and leads labor dispatching to the standard employment track while keeping its specific character .

走出标准制定误区加快与国际标准接轨步伐介绍了我国城市轨道交通技术装备的基础标准和城市轨道交通类型选择标准。

Make a big step towards international standard by clearing up misunderstanding in standard development ; With an introduction to the basic standards for technical equipment and UMT patterns in China , this paper analyses the level of UMT equipment development .