NASA NTRS · 20190031813
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Edmunson, Jennifer, Hill, Curtis, Ledbetter, Frank E., Hall, Phillip B., Russell, Carolyn K.. 2019-09-24. In-Space Manufacturing (ISM). https://ntrs.nasa.gov/citations/20190031813
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Constructed more than 20 years ago, the International Space Station’s primary power system originally used nickel-hydrogen batteries with a lifetime of 6.5 years, until NASA began the process of replacing them in 2016 with lithium-ion batteries with a lifetime of 10 years. The demanding and costly process was accomplished after four flights of the Japanese H-II Transfer Vehicle cargo spacecraft (with a cost of about $10,000 per pound of payload), and 13 different astronauts conducting 14 spacewalks. Besides utilization in the ISS, rechargeable batteries are present in many space applications: they are installed in exploration robots, life support systems and in portable communication devices, to mention some. In this context, this project is focused on the in-space manufacturing of shape-conformable batteries using in-situ resources, and aims to address the NASA’s gaps related to the development of next generation of energy storage devices (TX03), as well as in-space manufacturing and in-situ resource utilization (TX07). The proposed work also tackles the HEOMD’s objectives targeting the in-space additive manufacturing (AM) from Lunar/Martian materials (regolith as AM feedstock) to reinvigorate America’s Human Space Exploration Program (SPD-1). This project is in direct alignment with the STMD’s objectives to demonstrate in-space autonomous manufacturing and assembly of complete systems by 2030, and to enable humans to live and explore in space and on planetary surfaces by 2040 thanks to in-space habitation, infrastructure development and in-situ resource utilization (ST1 and ST5). Manufacturing of shape conformable batteries directly in-space and using in-situ resources would also contribute to reducing the payload weight and volume (TX12) for future missions, thus reducing risk for long term Mars missions where rapid resupply is logistically infeasible. Nowadays, commercial batteries consist of stacked two-dimensional (2D) sheets, which are only manufactured in restricted geometries (cylindrical and coin cell). Evolving from conventional 2D, complex 3D battery architectures have been proven to increase the electrochemical active surface area and ion diffusion path, leading to improved areal energy density and power performance. This tendency was illustrated in our recent in-depth modeling studies by simulating a classical Ragone plot exhibiting the energy-power relationship. Our team demonstrated through modeling that a complex gyroidal 3D printed battery architecture exhibits significantly improved power performances (>150% at the current density of 6C; full discharge in 10 minutes) in comparison to a traditional 3D printed planar geometry. Motivated by these results and as the fabrication of intricate 3D battery design is only possible experimentally thanks to the geometric freedom offered by additive manufacturing (AM), our team has already initiated leveraging thermoplastic material extrusion at the laboratory scale. While 3D printing of batteries is relatively recent (2013), it has witnessed a growing interest during the last recent years, as next-generation shape-conformable 3D batteries can be co-designed with the system. Consequently, dead-volume and mass brought from Earth are minimized, in addition to improved battery performance, in alignment with the aforementioned NASA’s objectives. Further, while this project is specifically dedicated to batteries, it lends itself towards the maturation of in-space manufacturing via 3D printing using in-situ resources, stated in HEOMD and STMD goals.
OSAM-2 began as a NASA Space Technology Mission Directorate Tipping Point project in 2016 in which an investment made in ground development and demonstration and/or flight demonstration will result in: Significant advancement of technology’s maturation High likelihood for utilization of technology in commercially fielded space application Significant improvement in ability to successfully bring space technology to market Topic area was “Robotic In-Space Manufacturing and Assembly of Spacecraft and Space Structures” Made In Space, Inc. (now Redwire) proposed Archinaut One, an in-space robotic precision manufacturing and assembly system for larger-than-deployable structures Manufacturing / assembly in the operational environment allows manufactured parts to be designed for that environment (and not for launch loads and need to deploy) In 2020 NASA budget language, NASA began using On-orbit Servicing, Assembly, and Manufacturing Mission 2 (OSAM-2) for Archinaut One Restore-L + SPIDER (SPace Infrastructure DExterous Robot) became OSAM-1 Note: Slide 7 contains video animation, best viewed in presentation mode, run time 2 mins 25 secs.