Keep pushing forward! While Americans have left their space technology projects unfinished, the Chinese are stepping up to take on the challenge.
Rebirth of Space Spider Robots: China Revives NASA's Orbital Fabrication Concept
On April 25, according to *Interesting Engineering*, Chinese researchers are developing an autonomous version of NASA’s “SpiderFab” orbital manufacturing robot. This revival breathes new life into NASA’s abandoned space spider concept, while China has successfully demonstrated key in-orbit construction technologies, paving a new path for next-generation space systems.
Reports confirm that this development is supported by related information from *South China Morning Post*, with breakthroughs at the Shenyang Institute of Automation, Chinese Academy of Sciences, serving as the core technical foundation.
NASA’s SpiderFab was an autonomous robot never tested in orbit. Its core idea involves using raw materials like carbon fiber spools to weave large-scale space structures—such as solar power stations and antennas—on-site in low-gravity or zero-gravity environments.
These structures are too large to be transported directly as payloads on rockets. However, this robot enables on-orbit manufacturing, breaking through current limitations on size and weight for space equipment. Despite its promise, the project was ultimately shelved by NASA.
Currently, conventional deployment of space equipment involves manufacturing on Earth, folding the components into compact forms, loading them into spacecraft, launching into orbit, and then unfolding them.
While this method has been widely used, it comes with clear limitations: strict requirements on size and weight, and the need for equipment to withstand intense vibrations during rocket launch—severely restricting the exploration and application of large space structures.
By contrast, the SpiderFab-type robot concept could completely transform this paradigm. Operating similarly to how spiders spin webs on Earth, these robots can achieve 3D printing fabrication in space. Theoretically, given sufficient raw materials, such robots could manufacture previously unattainable structures—like one-kilometer-wide antennas or large solar panels—opening entirely new directions for space exploration.
The team from the Shenyang Institute of Automation has taken over the development baton and successfully overcome two major challenges that stymied NASA’s original efforts.
The developed robot uses carbon fiber composite materials instead of pure carbon fiber, enabling the creation of strong yet lightweight hollow tubes ideal for space environments. Moreover, the printed structures require no bolts or adhesives; connections are achieved through built-in 3D-printed joints combined with laser bonding technology, ensuring robust assembly and greater ease of automation.
Currently, this Chinese version of the space spider robot remains in Earth-based research and development. Concept validation tests have shown promising results, with the team successfully fabricating scaled-down antenna structures in the lab. However, achieving actual in-orbit application still requires overcoming significant hurdles—including autonomous assembly under microgravity, precise long-distance alignment, and long-term durability under space radiation exposure.
The institute emphasized that in-orbit construction technology eliminates the need to fold equipment into rockets and removes size constraints, allowing direct manufacturing, connection, and assembly of components in space—potentially becoming a cornerstone technology for next-generation space systems.
China’s revival and enhancement of the SpiderFab concept not only advance breakthroughs in space construction technology but also inject new vitality into future space exploration and development.
It should be noted that the SpiderFab concept was originally proposed by NASA, with detailed technological concepts outlined in its public reports, aiming to enable efficient construction of large-scale structures in orbit.
Original article: toutiao.com/article/1863454057424075/
Disclaimer: The views expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of any organization.