PULSAR · Project

Space Assembly Robots That Build Structures Too Large to Launch in One Piece

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h2020-pulsar.eu

Imagine trying to ship a fully assembled 12-meter telescope mirror into space — it simply won't fit on any rocket. PULSAR built robots that can assemble giant structures in orbit, piece by piece, autonomously. Think IKEA furniture assembly, but performed by robots floating in zero gravity with extreme precision. They created three working demonstrators that prove mirrors, solar arrays, and other massive space structures can be snapped together by machines without human hands.

By the numbers

12m

Target telescope mirror diameter for autonomous assembly

Working demonstrators built and validated

Consortium partners across the project

Countries represented in the consortium

Total project deliverables produced

The business problem

What needed solving

The next generation of space telescopes, solar arrays, and orbital structures are simply too large to launch in one piece — the James Webb Space Telescope already pushed that limit. Without autonomous robotic assembly in orbit, these critical missions cannot happen. Companies building space hardware need proven assembly technology that works without human intervention in the harshest environment imaginable.

The solution

What was built

Three physical demonstrators: one for precision mirror-tile assembly (dPAMT), one for large structure assembly in free-floating conditions (dLSAFFE), and one for simulated in-space assembly (dISAS). Plus 20 deliverables including validated datasets with real measurements from demonstration campaigns.

Audience

Who needs this

Space telescope and satellite manufacturers planning next-generation large-aperture missionsDefense contractors developing orbital infrastructure and large platform assemblySolar power satellite companies needing autonomous deployment of massive solar arraysPrecision robotics firms looking to enter the space assembly marketSpace agencies and their prime contractors planning post-JWST observatory missions

Business applications

Who can put this to work

Space systems manufacturing

enterprise

Target: Satellite and telescope manufacturers

If you are a space systems company struggling with the size limits of current launch vehicles — this project developed autonomous robotic assembly technology for building 12m-diameter structures in orbit. Their 3 demonstrators proved that precision mirror tiles, large free-floating structures, and simulated in-space assemblies can be handled robotically, opening the door to next-generation space hardware you currently cannot build.

Aerospace and defense

enterprise

Target: Defense contractors working on orbital infrastructure

If you are a defense or aerospace firm planning large orbital platforms like solar power arrays, heat shields, or communications arrays — PULSAR's modular building-block approach means you can reuse standardized robotic components across different missions. The technology was validated across 3 demonstration tracks with 8 partners from 5 countries, providing a tested supply chain for autonomous space construction.

Industrial robotics

mid-size

Target: Precision robotics and automation companies

If you are a robotics company looking to enter the space market or improve terrestrial precision assembly — PULSAR's core building blocks for autonomous alignment and assembly of delicate components transfer directly to ground applications. Their mirror-tile assembly demonstrator required accuracy far beyond what typical large structures demand, pushing precision robotics to new levels applicable to semiconductor or optics manufacturing.

Frequently asked

Quick answers

What would it cost to license or adopt this robotic assembly technology?

The project was funded as an RIA (Research and Innovation Action), meaning results are typically available under fair licensing terms. PULSAR's coordinator is MAGELLIUM SAS, an SME in France. Specific licensing costs would need to be negotiated directly with the consortium partners who own the individual building blocks.

Can this technology work at industrial scale for real space missions?

PULSAR targeted a 12m-diameter telescope mirror assembly as its reference mission, which is significantly larger than anything currently deployed (the James Webb Space Telescope represents the current size limit). The 3 demonstrators validated key steps, but full in-orbit deployment would require further engineering and qualification.

Who owns the intellectual property and how is it structured?

IP is distributed among the 8 consortium partners across 5 countries. The modular building-block design means different partners maintain different components (SIROM, ESROCOS, ERGO, INFUSE, I3DS). Licensing would likely involve multiple parties depending on which components you need.

How soon could this be integrated into a real space mission?

The project ran from 2019 to 2021 and produced 3 working demonstrators with validation datasets. Based on available project data, the technology is at demonstration level but would need further space qualification and mission-specific adaptation before flight deployment.

Does this only work for telescopes or can it assemble other structures?

The project explicitly states that while it focused on mirror assembly — chosen because it demands the highest precision — the technology applies to solar arrays for power plants, light sails, and heat shields. Assembling a mirror is harder than these other structures, so the capability transfers directly.

What validation data exists to prove this works?

PULSAR produced 20 deliverables including demonstration datasets with measurements and ground-truth data from all 3 demonstrator tracks. The dataset deliverable (D51.3) contains actual performance measurements from physical demonstrations, not just simulations.

Consortium

Who built it

The PULSAR consortium of 8 partners from 5 countries (France, Germany, Italy, Belgium, Switzerland) is evenly split between industry (4) and research (4), with 3 SMEs including the coordinator MAGELLIUM SAS. This balanced structure means the technology was developed with commercial viability in mind from the start, not just academic interest. The 50% industry ratio is strong for a space robotics project, and the multi-country spread across major European space nations (FR, DE, IT) suggests alignment with ESA and national space agency roadmaps. For a business looking to partner, the SME-led coordination means faster decision-making and more flexible engagement than a large agency-led project.

MAGELLIUM SASCoordinator · FR
CSEM CENTRE SUISSE D'ELECTRONIQUE ET DE MICROTECHNIQUE SA - RECHERCHE ET DEVELOPPEMENTparticipant · CH
GRAAL TECH SRLparticipant · IT
SPACE APPLICATIONS SERVICES NVparticipant · BE
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AEROSPATIALESparticipant · FR
DEUTSCHES FORSCHUNGSZENTRUM FUR KUNSTLICHE INTELLIGENZ GMBHparticipant · DE
DEUTSCHES ZENTRUM FUR LUFT - UND RAUMFAHRT EVparticipant · DE
THALES ALENIA SPACE FRANCE SASparticipant · FR

How to reach the team

MAGELLIUM SAS is an SME based in France specializing in space technology. SciTransfer can facilitate a direct introduction to the project coordinator.

Order a report on this consortium See MAGELLIUM SAS profile →

Next steps

Talk to the team behind this work.

Want to explore how autonomous space assembly robotics could fit your product roadmap? SciTransfer can arrange a briefing with the PULSAR team and help you evaluate licensing or partnership options.

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