Developing a Universal Interface to Standardize Satellite Connectivity

• The EU-funded SPACE USB project has successfully developed a prototype for a universal satellite interface, aiming to replace fragmented proprietary standards.
• This standardization facilitates in-orbit repair, component upgrades, and modular assembly, extending the operational life of satellites.

Addressing Fragmentation

• Currently, European spacecraft rely on three distinct, non-compatible interfaces: HOTDOCK, SIROM, and iSSI.
• Researchers created the 'Common Passive Interface,' which demonstrated full electrical and mechanical compatibility with all three existing systems during testing at Thales Alenia Space.
• The connector design allows for the addition of new sensors, computing units, or AI processing hardware to existing satellites.

Operational Benefits

• Enables a shift from current "use-and-discard" practices to a model of in-orbit maintenance, reducing the risk of collision-prone space debris.
• Provides the framework for modular in-orbit construction, supporting sectors like semiconductor manufacturing and pharmaceuticals that benefit from microgravity environments.

Policy and Future Outlook

• The European Commission and ESA have signed a declaration supporting the In-Space Operations and Services (ISOS) pilot, targeting a 2030 launch.
• Proposed EU space legislation is considering mandates that would require new EU-owned spacecraft to include standardized service interfaces, moving toward a sustainable in-orbit infrastructure.