• The Chinese Long March can put 9.5 tons in low earth orbit, and 5.5 tons in a high one (geostationary transfer orbit).

    “长征”9.5放入地球轨道把5.5吨放入一个轨道(地球同步运行轨道)。

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  • The satellite split off from the rocket about 25 minutes after its 00:20 lift-off, entering a geosynchronous transfer orbit.

    “鑫诺二号”卫星29日零时20点火升空25分钟运载火箭分离进入地球同步转移轨道

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  • The autonomous optical navigation algorithm based on Earth-Moon information during the cislunar transfer orbit phase is presented.

    基于地月信息提出了一种奔月转移轨道自主光学导航算法

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  • Secondly, the exponential slippage guidance method and optimal energy transfer orbit are designed respectively in the homing phase.

    其次导引段,以脉冲控制策略为前提,分别设计了指数滑移导引能量最优转移轨道

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  • In part, this rush was down to cosmic timing: the alignment of planets that permits an energy-saving "transfer orbit" only comes around every two years or so.

    某种程度上,这次仓促决定归因于空间的时间周期:行星之间这种排列导致大约的时间会出现以相对较少能源环绕的“过渡轨道”。

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  • A typical orbit of lunar probe includes earth parking orbit segment, earth-moon transfer orbit segment, lunar satellite orbit segment and moon-landing orbit segment.

    典型月球探测器飞行轨道包括地球停泊轨道、地转移轨道段、月球卫星轨道段和着月轨道段。

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  • A fast design method for transfer orbit of lunar probe is presented using overlap conic curve method aimed at lunar landing transfer orbit and lunar satellite transfer orbit.

    利用重叠圆锥曲线方法针对着陆月球卫星型两种地转移轨道给出了一种地月转移轨道的快速设计方法。

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  • The propulsion subsystem is essential for maneuvering the MUOS satellite during transfer orbit to its final location as well as conducting on-orbit repositioning maneuvers throughout its mission life.

    把MUOS卫星变轨最终位置以及执行任务寿命期内的在轨机动性重新配置上,推进系统很关键

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  • Microwave plasma thruster (MPT) was applied to the sub system of DFH 3 satellite to complete its orbit transfer (OT) and north south station keeping (NSSK).

    将微波等离子推力器(MPT)应用于“东方红三号”(DFH3)卫星推进子系统完成轨道转移南北位置保持任务。

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  • Finite multiple burn method is used for the transfer from Space Shuttle low earth orbit to the geostationary orbit with low accelerations.

    加速度航天飞机的低地球轨道转移地静止轨道,需要有限多次点火。

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  • It was showed that PPT was a kind of advanced propeller with small thrust, which was suitable to orbit transfer, attitude control, station keeping and formation flying for small and micro satellite.

    分析认为PPT先进推力动力装置特别适合于微小卫星的轨道转移姿态控制位置保持以及星座编队飞行

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  • The optimal scheme is given for the dual-tangential transfer between two circular orbits by dual impulse method. The orbit perturbation as a result of the Earth's flattening is considered.

    本文用冲量给出了沿共切椭圆轨道实现轨道向另一圆轨道转移最优方案,并考虑到地球扁率造成的轨道摄动

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  • Second part is the historical orbit and status quo of Chinese urbanization and transfer-out of rural labor surplus and the relative analysis.

    第二内容摘要部分我国城市化农村剩余劳动力转移历程和现状分析

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  • In this paper, thinking of three-satellite constellation, optimal impulse orbit transfer is studied for constellation launching.

    文中基于卫星相对运动状态转移方程,推出星座脉冲变轨控制理论解;

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  • In this paper, thinking of small satellite constellation, optimal impulse orbit transfer is studied for constellation launching.

    针对卫星星座进行星座发射中的最优脉冲式变轨研究

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  • Second, the initial point and transfer time are same for different object relative orbit, and the minimum consumption of fuel is proportional to the expansion deflection.

    不同膨胀系数施加脉冲时刻不变优的燃料消耗膨胀变化量成正比

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  • The results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process.

    仿真结果表明算法快速准确地估计推进发动机质量秒耗向机动目标施加的实际推力。

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  • The combined radiation and conduction heat transfer in multilayer perforated insulation material MLPIM in orbit were investigated. The energy equation of the reflective screen was established.

    分析空间多层打孔隔热材料中导热和辐射复合传热问题,建立了关于反射能量方程

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  • The combined radiation and conduction heat transfer in multilayer perforated insulation material MLPIM in orbit were investigated. The energy equation of the reflective screen was established.

    分析空间多层打孔隔热材料中导热和辐射复合传热问题,建立了关于反射能量方程

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