Space manufacturing

A vision of a future Moon base that could be produced and maintained using 3D printing[1]
Crystals grown by American scientists on the Russian Space Station Mir in 1995: (a) rhombohedral canavalin, (b) creatine kinase, (c) lysozyme, (d) beef catalase, (e) porcine alpha amylase, (f) fungal catalase, (g) myglobin, (h) concanavalin B, (i) thaumatin, (j) apoferritin, (k) satellite tobacco mosaic virus and (l) hexagonal canavalin.[2]
Comparison of insulin crystals growth in outer space (left) and on Earth (right)

Space manufacturing or In-space manufacturing (ISM in short) is the fabrication, assembly or integration of tangible goods beyond Earth's atmosphere (or more generally, outside a planetary atmosphere), involving the transformation of raw or recycled materials into components, products, or infrastructure in space, where the manufacturing process is executed either by humans or automated systems by taking advantage of the unique characteristics of space.[3] Synonyms of Space/In-space manufacturing are In-orbit manufacturing (since most production capabilities are limited to low Earth orbit), Off-Earth manufacturing, Space-based manufacturing, Orbital manufacturing, In-situ manufacturing, In-space fabrication, In-space production, etc.[3] In-space manufacturing is a part of the broader activity of in-space servicing, assembly and manufacturing (ISAM) and is related to in situ resource utilization (ISRU).[3]

Three major domains of In-space manufacturing are ISM for space (space-for-space) where products remain in space, ISM for Earth (space-for-Earth) where goods with improved properties produced in outer-space microgravity are transported back to Earth, and ISM for surface where goods are produced on or sent to surfaces of celestial bodies like the Moon, Mars, and asteroids.[3]

In-space manufacturing uses processes such as additive manufacturing (printing a 3D object in successive layers), subtractive manufacturing (making 3D objects by successively removing material from a solid), hybrid manufacturing (usually combining additive manufacturing and subtractive manufacturing) and welding (joining pieces of material by melting or plasticizing along a joint line).[4]

In-space manufacturing removes spacecraft design limitations due to launch parameters (mass, vibration, structural load, etc.) and volume limitations imposed by payload size. It allows for recycling of launched materials, utilization space-mined resources and on-demand spare parts production, which enables on-site repair of critical parts (increasing reliability and redundancy) and infrastructure development. It takes advantage of unique space features such as microgravity, ultra-vacuum and containerless processing, which are difficult to do on Earth.[3][4]

  1. ^ "Off-Earth manufacturing: using local resources to build a new home". www.esa.int. Retrieved September 9, 2020.
  2. ^ Koszelak, S; Leja, C; McPherson, A (1996). "Crystallization of biological macromolecules from flash frozen samples on the Russian Space Station Mir". Biotechnology and Bioengineering. 52 (4): 449–58. doi:10.1002/(SICI)1097-0290(19961120)52:4<449::AID-BIT1>3.0.CO;2-P. PMID 11541085. S2CID 36939988.
  3. ^ a b c d e Erik Kulu (September 2022). In-Space Manufacturing - 2022 Industry Survey and Commercial Landscape. 73rd International Astronautical Congress (IAC 2022). Paris, France.
  4. ^ a b Tracy Prater; Matthew Moraguez (November 11, 2019). In-Space Manufacturing: The Gateway to the High Frontier and an Enabling Technology for Human Space Exploration (PDF). Tennessee Valley Interstellar Workshop. NASA Technical Reports Server (NTRS).