• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IEEE Aerospace Conference >Evolutionary upgrade for the multi-mission radioisotope thermoelectric generator (MMRTG)
【24h】

Evolutionary upgrade for the multi-mission radioisotope thermoelectric generator (MMRTG)

机译：多任务放射性同位素热电发生器（MMRTG）的演进升级

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Advanced thermoelectric materials developed over the last 10 years have opened up a number of radioisotope generator design options for deep space and planetary exploration. Publications over the last several years have described options ranging from low risk upgrades to the Multi-Mission Radioisotope Thermoelectric Generator (MMRTG) to higher risk game changing designs with efficiency above 10% and power density above 5 W/kg. While the latter are very compelling to the mission planners, the reality is that only the former is within reach of the current NASA budget and near term missions. System design and mission studies have determined that even the former approach will provide significant power system improvements for future missions. A program is therefore in progress to evaluate evolutionary MMRTG upgrades using new skutterudite (SKD) thermoelectric materials. Modest temperature increases to produce higher beginning of life (BOL) power from the SKD materials are expected to be within the capability of the MMRTG system design. The SKD materials are also expected to provide a substantial end of life (EOL) improvement relative to MMRTG materials. This paper examines the evolutionary system design changes for this enhanced (e)MMRTG, provides a risk assessment of each and summarizes the expected performance.
机译：过去10年中开发的先进热电材料为深空和行星探索开辟了许多放射性同位素发生器的设计选择。过去几年的出版物描述了从低风险升级到多任务放射性同位素热电发电机（MMRTG）到高风险，改变游戏规则的设计方案，这些方案的效率超过10％，功率密度超过5 W / kg。尽管后者对任务计划者来说非常有吸引力，但现实情况是，只有前者才是当前NASA预算和近期任务所能及的。系统设计和任务研究已经确定，即使是前一种方法也将为未来的任务提供重大的动力系统改进。因此，正在开发一个程序，以评估使用新方钴矿（SKD）热电材料进行的MMRTG演进升级。适度的温度升高可通过SKD材料产生更高的寿命（BOL）功率，这预计将在MMRTG系统设计的能力范围内。相对于MMRTG材料，SKD材料也有望显着提高使用寿命（EOL）。本文研究了此增强型（e）MMRTG的进化系统设计更改，提供了每种更改的风险评估并总结了预期的性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号