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最近,英国航空宇宙公司空间通信部研制了一种用于轨道卫星的新型复合材料,由于这种材料的应用,在卫星受到高能电子轰击时,不至于引起损伤或整个计划的失败。高能电子的轰击,可在卫星的外部隔热层表面产生高达二万伏的静电。而当电压达到隔热层的击穿电压时,就在材料中发生自然放电。这样,不仅放电处的隔热层要损坏,而且放电引起的强电磁脉冲还会在卫星的电子线路上产生伪信号。这些伪信号在未得到地面指令纠正之前,一直会干扰卫星的正常工作。而更为严重的情况是当卫星在
Recently, British Aerospace Corporation Space Communications developed a new type of composite material for orbiting satellites that, as a result of this material, will not cause damage or failure of the entire program when the satellite is bombarded with energetic electrons. High-energy electron bombardment can generate up to 20,000 volts of static electricity on the outer surface of the satellite’s insulation. When the voltage reaches the breakdown voltage of the insulation, a natural discharge occurs in the material. In this way, not only will the insulation at the discharge be damaged, but strong electromagnetic pulses caused by the discharge can also create spurious signals on the satellite electronics. These spurious signals have been interfering with the normal operation of the satellite until they have been corrected by ground instructions. The more serious situation is when the satellite is in