In-space servicing, assembly, and manufacturing

NASA, Northrop Grumman, Airbus, and Orbit Fab Inc. are among the organizations identified across ISAM approaches. Northrop Grumman’s Mission Extension Vehicle docks with satellites to extend their service lives, while Airbus has researched modular assembly tools and satellite refueling. Orbit Fab is developing orbital refueling systems, and NASA advances technologies for in-orbit construction and servicing.

Orbit Fab Inc. is the startup identified in FACTS, with a focus on refueling and fluid transfer. The company is developing orbital refueling systems and has planned demonstrations using hosted and free-flying payloads. Its work addresses one barrier to extending spacecraft operations: transferring propellant to vehicles designed to receive it.

NASA (5,593 recent-window documents), the European Space Agency (1,602), and the Massachusetts Institute of Technology (1,304) are the research organizations with the largest listed document counts. NASA advances in-orbit construction and servicing technologies; ESA supports servicing and orbital sustainability; MIT researchers study spacecraft dynamics during assembly and the value of servicing observatories.

FACTS records $2,307,326,326 in grants across 2,098 awards since 2020. This is the recorded grant total, not a breakdown by technical approach or recipient. The funding-round entries are not reliably attributable to ISAM, so they do not provide a sound basis for identifying the sector’s latest investment rounds.

Contemporary Amperex Technology Co. Ltd has 705 listed patents, followed by Huawei with 292 and Samsung SDI Co., Ltd. with 290. These are the largest patent-holder counts in FACTS, but the names and counts alone do not establish that each patent is directly relevant to ISAM. They should be treated as broad dataset results rather than validated ISAM portfolios.

Patent activity declined 29.7% in the latest 12 months compared with the previous 12 months, while the 24-month patent window contains 19,815 patents. Publication activity moved in the opposite direction: 13,986 publications were recorded last year, up 6.4%. The indicators suggest continuing research activity alongside a contraction in recent patenting.

In September 2026, York University published work on dynamic SLAM and factor-graph reconstruction of tumbling space objects, while Harbin Institute of Technology studied reconfigurable CubeSats and multispacecraft servicing plans. In February 2026, Caracol advanced an ESA-backed project on AI monitoring for large-format in-orbit printing, and OrbiSky received a UK Space Agency contract for an optical-fibre manufacturing payload concept.

The United States accounts for 59.7% of listed documents, followed by the United Kingdom at 18.5% and China at 15.4%. Germany and Japan are also prominent, with 14.3% and 12.7%, respectively. These country shares describe recorded document activity and do not, by themselves, measure operational capability or commercial maturity.

FACTS identifies satellite life extension, orbital infrastructure, deep-space exploration, high-value products, and space sustainability as ISAM applications. Servicing can extend satellite operations, while assembly can enable larger orbital structures. Manufacturing concepts target high-value products, and debris removal and reuse connect ISAM with sustainability. The application mix ranges from near-term spacecraft maintenance to longer-term infrastructure and production goals.

FACTS groups ISAM into robotic inspection and repair, refueling and fluid transfer, assembly and construction, additive manufacturing, and advanced materials and biomanufacturing. Robotic servicing centers on inspection and physical interaction; refueling requires compatible transfer interfaces; assembly joins structures; and manufacturing produces components or materials in orbit. Each approach faces distinct challenges in autonomy, interface design, process control, and validation.