India Moves Toward Satellite Life-Extension Technology with Support for OrbitAID

In a major push to strengthen India’s growing private space ecosystem, the Technology Development Board (TDB) under the Department of Science and Technology (DST) has extended financial assistance to OrbitAID Aerospace Private Limited.

The support is aimed at developing indigenous on-orbit satellite docking and refueling technology, a critical capability that can extend the operational life of satellites already operating in space. The project, titled “Development of Docking and Refueling Systems for In-Space Life Extension of Satellites,” reflects the Government of India’s broader vision of encouraging private participation in the space sector while strengthening domestic capabilities in advanced space technologies.

Addressing the Growing Challenge of Satellite Congestion

OrbitAID Aerospace is working to develop advanced on-orbit satellite servicing systems, including technologies that allow satellites to be refueled while they remain in orbit.

Such innovations are becoming increasingly important as the number of satellites in Earth’s orbit continues to grow rapidly. The surge in satellite launches has created new opportunities in communication, navigation, and Earth observation, but it has also raised concerns related to space congestion, satellite lifecycle management, and long-term sustainability of space operations.

Technologies that enable in-orbit servicing can significantly reduce the need to launch replacement satellites, thereby lowering costs and minimizing the accumulation of space debris.

SIDRP: A New Docking and Refueling Interface

A key innovation being developed under the project is the Standard Interface Docking and Refueling Port (SIDRP).

The system has reached Technology Readiness Level 7 (TRL-7) and is designed to enable autonomous docking and propellant transfer between satellites in orbit. The SIDRP integrates a satellite fill-and-drain valve with a dual docking interface, allowing it to operate effectively both on Earth and in the microgravity conditions of space.

The technology incorporates several advanced engineering features, including:

• Autonomous docking capability
• Dual docking mechanisms
• Multiple redundancy systems to ensure safety and reliability

These features enable a servicing spacecraft to dock with a client satellite and safely transfer fuel, thereby extending the satellite’s operational lifespan.

How the Refueling Process Works

During operations, an OrbitAID Service Module approaches the target satellite using advanced guidance, navigation, and control systems.

The spacecraft relies on a combination of LiDAR sensors, optical cameras, and infrared sensors to accurately track and align with the satellite. Once the service module reaches close proximity, the docking interface performs a soft capture, followed by secure latching.

After a stable connection is established, propellant is transferred from the servicing spacecraft to the satellite, replenishing its fuel reserves. This process allows satellites to continue functioning for longer periods, often at a fraction of the cost required to launch a new satellite.

Toward an Indigenous On-Orbit Servicing Ecosystem

With financial support from TDB, OrbitAID Aerospace will focus on further development, testing, and eventual in-space demonstration of the SIDRP system.

The initiative is expected to pave the way for the development of an indigenous on-orbit satellite servicing ecosystem in India, opening new commercial opportunities in satellite life-extension services and improving operational efficiency for satellite operators.

According to Rajesh Kumar Pathak, India’s space sector is currently undergoing a transformative phase driven by policy reforms that encourage private innovation and entrepreneurship.

He noted that technologies such as on-orbit servicing and satellite life-extension systems represent the next frontier of commercial space activities, and reaffirmed the government’s commitment to supporting Indian startups working in advanced space technologies.

Strengthening India’s Space Innovation Ecosystem

The promoters of OrbitAID Aerospace also welcomed the support from the Technology Development Board, stating that the assistance will accelerate the development and testing of the docking and refueling system.

Once demonstrated in space, the technology could play a crucial role in enhancing satellite longevity, improving mission efficiency, and supporting sustainable space infrastructure.

The project represents another step in India’s efforts to build a robust domestic space innovation ecosystem, enabling private companies to develop cutting-edge technologies while strengthening the country’s position in the rapidly expanding global space economy.

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Reference: PIB

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