PTFE射频同轴稳相电缆空间环境应用性评估方法

Evaluation Method for Space Environment Application of PTFE RF Coaxial Stable Phase Cable

为了确保聚四氟乙烯(PTFE)射频同轴稳相电缆组件空间环境应用的可靠性,对PTFE射频同轴稳相电缆空间环境应用性的评估方法进行了研究。根据空间环境应用特点(即基本不含γ辐射、水汽、氧气、氮气,所含丰富的是质子辐射、α辐射、β辐射),指出了传统基于地面γ辐射试验评估方法的试验条件与太空真实环境差异非常大,会导致对γ辐射敏感型PTFE介质的射频同轴稳相电缆空间环境应用性评估出现极大的偏差,进而提出了更符合太空实际环境的基于地面质子-电子辐射试验评估方法。经试验验证和理论分析,表明基于地面质子-电子辐射试验评估方法可对PTFE射频同轴稳相电缆空间环境应用性进行准确评价,指导其在空间环境中的应用。

In order to ensure the reliability of the space environment application of PTFE RF coaxial stable phase cable assemblies, an evaluation method for the space environment application of PTFE RF coaxial stable phase cables is studied. According to the characteristics of space environment applications(i.e., basically excluding γ-radiation, water vapor, oxygen, nitrogen, rich in proton radiation, α-radiation, β-radiation), it is pointed out that the experimental conditions of evaluation method based traditional ground γ-radiation test is differ greatly from the real space environment, which can lead to significant deviation in the evaluation of the space environment application of RF coaxial stable phase cables with γ-radiation sensitive PTFE media. Furthermore, an evaluation method based ground proton electron radiation test that is more in line with the actual space environment is proposed. After experimental verification and theoretical analysis, it has been shown that the evaluation method based on ground proton electron radiation test can accurately evaluate the applicability of PTFE RF coaxial stable phase cables in space environment and guide their application in space environment.