東方紅五號 DFH-5

东方红五号卫星平台（DFH-5）是中国下一代地球同步轨道大型卫星公用平台，作为中国卫星技术的重要突破，将使用多种先进技术，其超大型的卫星平台质量达到10吨，远远超出了现有长征三号乙的运载能力，将使用长征五号火箭进行发射。相较于前一代的东方红四号卫星平台（DFH-4），东五平台采用了更先进的桁架结构和电推技术。东五平台的有效载荷质量将达到1200-2000千克，电源功率达到15-20千瓦。作为通信卫星使用时，携带的转发器数量可达100多路。这些性能指标都超过了东四平台，可以更好地满足未来通信、科学探测和微波遥感类卫星的需求，同时也兼顾了光学遥感类卫星的需求。

东五平台还将使用二次展开十字太阳翼和可展开式热辐射器等多项新技术。二次展开十字太阳翼是一种新型的太阳能电池板，可以在太空中展开以获取更多的太阳能，提高卫星的能量利用效率。可展开式热辐射器则可以在卫星的工作时展开，将卫星产生的热量散发出去，保证卫星的温度稳定，避免因为过热而导致的故障。

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