Psyche: Journey to a metal world
Psyche: Journey to a metal world
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Psyche：金属世界之旅
DOI：
10.1109/aero.2017.7943771
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
L. Elkins‐Tanton
中科院分区：
文献类型：
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作者：
P. Lord;S. Tilley;D. Oh;D. Goebel;C. Polanskey;Steve Snyder;G. Carr;S. Collins;G. Lantoine;D. Landau;L. Elkins‐Tanton
2015年9月，NASA从27个任务概念中选择了5个任务概念，进入最新的“发现”任务竞赛的下一阶段（第二步）。2016年8月，每个团队向NASA提交了一份任务概念研究报告，2017年1月，NASA选择了普赛克和第二个飞行任务。本文描述了普赛克，一个独特的金属世界的调查，这是最初的五个任务概念中唯一一个详细研究了使用电力推进（EP）来完成其任务目标的任务。Psyche将利用商业开发的EP和具有强大系统级传统的空间动力系统，以相对较低的技术风险和成本风险完成NASA的深空科学任务。本文描述了Psyche任务概念和独特的太阳能电力推进（SEP）架构，该架构允许使用SSL的商业SPT-140霍尔推进器推进系统，在太阳距离高达3.3 AU的情况下进行最小的修改。在先前对“发现”级SEP系统进行分析的基础上，本文描述了为开发“灵神”任务而对动力和推进系统进行的传承、设计和测试，解决了地球和深空环境的差异，并描述了为确保地球静止轨道传承系统在深空可靠运行而采取的措施。
In September 2015, NASA selected five mission concepts from a field of 27 to proceed to the next stage (step 2) of the latest Discovery mission competition. Each team submitted a Mission Concept Study to NASA in August 2016, and in January of 2017 NASA selected Psyche and a second mission for flight. This paper describes Psyche, a unique investigation of a metal world, which is the only one of the original five mission concepts studied in detail to propose the use of Electric Propulsion (EP) to accomplish its mission objectives. Psyche will harness commercially developed EP and space power systems with strong system-level heritage to accomplish a deep space NASA science mission at comparatively low technical-risk and cost-risk. This paper describes the Psyche mission concept and the unique Solar Electric Propulsion (SEP) architecture that allows the use of SSL's commercial SPT-140 Hall thruster propulsion system at solar distances of up to 3.3 AU with only minimal modifications. Building on previous work analyzing SEP systems for Discovery-class missions, this paper describes the heritage, design, and testing which have been conducted on the power and propulsion systems to develop the Psyche mission, addresses the differences between GEO and deep-space environments, and describes actions taken to ensure that GEO heritage systems can be operated reliably in deep-space.