BIG MILESTONE: India Moves Closer to Becoming the World's 2nd Nation to Demonstrate On-Orbit Satellite Refuelling

BIG MILESTONE: India Moves Closer to Becoming the World's 2nd Nation to Demonstrate On-Orbit Satellite Refuelling

In a groundbreaking step for India's space ambitions, the Chennai-based startup OrbitAid Aerospace is set to launch its innovative AyulSAT (also spelled AayulSAT) satellite aboard ISRO's PSLV-C62 mission on January 12, 2026. This 25-kg technology demonstrator could position India as only the second country globally (after China) to achieve a successful on-orbit satellite refuelling demonstration, marking a historic leap in space sustainability and the emerging "on-orbit economy."

What is AyulSAT and Why It Matters

AyulSAT, meaning "Life" in Tamil, is a dedicated mini-tanker satellite developed by OrbitAid. It features the company's patented Standard Interface for Docking and Refuelling Port (SIDRP) — India's first commercial docking and refuelling interface.

The mission focuses on demonstrating key technologies in low Earth orbit:

• Internal propellant transfer (using propane-based fuel) from one tank to another within the satellite itself
• Power transfer
• Data transfer

This internal refuelling test validates how fluids behave in microgravity, a critical step before full inter-satellite refuelling. The first transfer is expected within hours of launch, with multiple cycles planned over a year-long mission.

If successful, AyulSAT will reach TRL-9 (Technology Readiness Level 9), proving the system for real-world commercial use.

Benefits of On-Orbit Refuelling include:

• Extending satellite lifespans by years (instead of replacing them)
• Reducing launch costs
• Minimizing space debris by servicing ageing satellites

This technology paves the way for "space petrol pumps" — orbital fuel stations that could transform satellite operations worldwide.

India's Historic Leap with ISRO Collaboration

The PSLV-C62 mission, launched from Sriharikota, carries AyulSAT alongside the primary EOS-N1 (Anvesha) hyperspectral Earth observation satellite (developed for strategic purposes) and 14 other co-passenger satellites from India and abroad.

This collaboration between ISRO and private startup OrbitAid highlights India's thriving space ecosystem under initiatives like NewSpace India Limited (NSIL).

OrbitAid plans to follow up with a "chaser" satellite by the end of 2026, which will dock with AyulSAT to demonstrate full Rendezvous Proximity Operations and Docking (RPOD), enabling actual satellite-to-satellite refuelling.

Global Context: China Leads, India Closes the Gap

China has demonstrated on-orbit refuelling (notably in geosynchronous orbit with missions like Shijian-21 and Shijian-25), making it the current leader. Full demonstrations by other nations remain limited.

A successful AyulSAT mission would make India the second nation to claim this capability, showcasing rapid progress in indigenous space tech.

The Future of Space Sustainability

As space becomes more crowded, technologies like AyulSAT are essential for a sustainable orbital environment. OrbitAid's efforts position India as a key player in the global on-orbit servicing market, potentially attracting international partnerships.

Stay tuned for updates on the PSLV-C62 mission outcomes — this could be the dawn of a new era in Indian space innovation!

For more exciting space news, tech updates, and global affairs, visit www.nriglobe.com. Share this milestone with fellow space enthusiasts! 

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