产品简介
6ES7 195-7HC00-0AX0
6ES7 195-7HC00-0AX0
产品价格:
上架日期:2021-12-29 16:38:31
产地:6ES7 195-7HC00-0AX0
发货地:6ES7 195-7HC00-0AX0
供应数量:不限
最少起订:1个
浏览量:94
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详细说明

    6ES7 195-7HC00-0AX0

    6ES7 195-7HC00-0AX0 月球南极和背面常被视为探月科考的理想地区,比如嫦娥四号已经成功登陆了月背,未来嫦娥七号也将登陆月球南极。但由于这些地区与地面之间没有直接的可视和传输路径,因此必须要靠轨道上的中继卫星来与地面站建立通信,将数据传输回地面,这也就是嫦娥四号月球探测器为何需要鹊桥中继星的原因。

    鹊桥经久耐用的原因

    自2018年5月21日发射成功,6月14日进入地月拉格朗日L2点的使命轨道以来,鹊桥已经经历了3年的服役周期,这已经超过了最初设计的使用年限,那么鹊桥为何能长时间运转呢?

    鹊桥基于中国空间技术研究院旗下的航天东方红卫星有限公司的CAST100小型卫星打造,太阳能电源系统采用了三结砷化镓太阳能电池,输出功率可达780W。

    鹊桥的飞行轨迹 / 航天东方红卫星

    设计之初,为了确保鹊桥能够在太空中正常运转,工程师们在这上面花费了大量的时间。总设计师张立华提到,他们花了两年多的时间研制,在不到四个月的时间里在地面进行了1300多个小时的测试。因为在中继星运行的过程中,不仅需要抵抗辐射,还要不时经过一段长达四个多小时的阴影区,温度可至零下230摄氏度,这对以及其中的元件稳定性与可靠性来说都是极大的考验。

    除此之外,在与发射器分离后,鹊桥并非直接被架设在轨道上,而是被放置在一个月球借力飞行轨道上,这也就是为何直到6月14号才进入使命轨道的原因。这么做固然会耗费一定的时间,但同时也节省了能源和燃料。在定期在轨维护后,卫星还有近8年的寿命。

    6ES7 195-7HC00-0AX0 


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    Supelpur 24518 HC Hydrocarbon Trap volume 750 cc, 1/4"

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    Supelpur 24518 HC Hydrocarbon Trap volume 750 cc, 1/4"

    Fisherbrand Hollow Cathode Lamp 14-386-100A Copper

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    Isco 160 Gradient Former W Power Supply

    HP Compaq 226519-001 3000W 48V Power Supply ESP120 New

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    Fisherbrand 14-958K Tube Cult DSP 20 x 150mm, 500 CS

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