摘要
针对某卫星随动式供电电缆在百kW级热羽流冲击下难以采用传统隔热型热防护产品的难题,文章提出采用Nomex套管进行热防护的设计方案。通过热分析计算选定了合适的Nomex套管产品;部件级、系统级发动机羽流试验验证结果表明,应用该方案可有效降低电缆温度,满足不超过200℃的防护要求,并具有50℃以上的设计余量,同时保证了电缆的热耗排散和运动功能。
To address the challenge of protecting a satellite’s servo power supply cable from hundred kW thermal plume impact,where traditional thermal insulation materials prove inadequate,a thermal protection design using Nomex sleeves was proposed in this paper.Thermal analysis calculations were conducted to select an appropriate Nomex sleeve product.Component-level and system-level engine plume tests demonstrate that the proposed scheme effectively reduces the cable temperature,meeting the protection requirement of less than or equal to 200℃,providing a design margin of over 50℃.It also ensures the cable’s heat dissipation and motion functions.
作者
张有为
姚文蕊
张然
姚文娟
张栋
戴承浩
ZHANG Youwei;YAO Wenrui;ZHANG Ran;YAO Wenjuan;ZHANG Dong;DAI Chenghao(Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;National Key Laboratory of Spacecraft Thermal Control,Beijing 100094,China;Beijing Spacecraft Manufactory Co.,Ltd.,Beijing 100094,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《航天器环境工程》
2025年第1期46-51,共6页
Spacecraft Environment Engineering
关键词
航天器
供电电缆
热羽流冲击
热防护
热分析计算
试验验证
spacecraft
power cable
thermal plume impact
thermal protection
thermal analysis calculation
test validation
作者简介
第一作者:张有为,高级工程师,主要从事航天器热控设计研究。
