NASA's Advanced Radioisotope Power Conversion Technology Development Status

D.J. Anderson, J. Sankovic, D. Wilt, R. Abelson, J. Fleurial
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引用次数: 8

Abstract

NASA's Advanced Radioisotope Power Systems (ARPS) project is developing the next generation of radioisotope power conversion technologies that will enable future missions that have requirements that cannot be met by either photovoltaic systems or by current radioisotope power systems (RPSs). Requirements of advanced RPSs include high efficiency and high specific power (watts/kilogram) in order to meet future mission requirements with less radioisotope fuel and lower mass so that these systems can meet requirements for a variety of future space applications, including continual operation surface missions, outer-planetary missions, and solar probe. These advances would enable a factor of 2 to 4 decrease in the amount of fuel required to generate electrical power. Advanced RPS development goals also include long-life, reliability, and scalability. This paper provides an update on the contractual efforts under the Radioisotope Power Conversion Technology (RPCT) NASA Research Announcement (NRA) for research and development of Stirling, thermoelectric, and thermophotovoltaic power conversion technologies. The paper summarizes the current RPCT NRA efforts with a brief description of the effort, a status and/or summary of the contractor's key accomplishments, a discussion of upcoming plans, and a discussion of relevant system-level benefits and implications. The paper also provides a general discussion of the benefits from the development of these advanced power conversion technologies and the eventual payoffs to future missions (discussing system benefits due to overall improvements in efficiency, specific power, etc.).
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美国宇航局先进放射性同位素功率转换技术发展现状
NASA的先进放射性同位素动力系统(ARPS)项目正在开发下一代放射性同位素动力转换技术,该技术将使未来的任务能够满足光伏系统或当前放射性同位素动力系统(RPSs)无法满足的需求。先进RPSs的要求包括高效率和高比功率(瓦特/千克),以满足未来的任务要求,使用更少的放射性同位素燃料和更低的质量,使这些系统能够满足未来各种空间应用的要求,包括持续操作的表面任务、外行星任务和太阳探测器。这些进步将使发电所需的燃料量减少2到4倍。高级RPS开发目标还包括长寿命、可靠性和可伸缩性。本文提供了放射性同位素功率转换技术(RPCT) NASA研究公告(NRA)下的合同工作的最新情况,用于研究和开发斯特林、热电和热光伏功率转换技术。本文总结了当前RPCT NRA的工作,包括工作的简要描述、承包商关键成就的状态和/或总结、即将到来的计划的讨论,以及相关系统级利益和影响的讨论。本文还对这些先进的功率转换技术的发展所带来的好处以及对未来任务的最终回报进行了一般性讨论(讨论了由于效率、比功率等方面的总体改进而带来的系统好处)。
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