OrbitAID Aerospace Receives TDB Support for Indigenous On‑Orbit Docking & Refueling System The TDB , under the DST , has approved financial assistance to OrbitAID Aerospace Private Limited for its project ‘Development of Docking and Refueling Systems for In‑Space Life Extension of Satellites.’ The move underscores the Government’s push to nurture a private‑led space ecosystem and build indigenous capabilities in advanced space technologies. Key Developments Funding approved for the design, testing and in‑space demonstration of the SIDRP system. SIDRP integrates a satellite fill‑and‑drain valve with a dual docking interface, operable in both ground and micro‑gravity conditions. The service module will use advanced guidance, navigation and control aided by LiDAR , optical and infrared sensors for autonomous docking. Project aims to achieve a TRL‑7 status before in‑orbit demonstration. Important Facts The SIDRP system offers dual docking mechanisms and multiple redundancies to ensure safe propellant transfer. By enabling a servicing satellite to approach, dock, and refuel a client satellite, the technology can extend satellite operational life at a fraction of the cost of launching a replacement. This addresses growing concerns of space congestion and sustainability as the number of low‑Earth‑orbit satellites surges. During the docking sequence, the service module performs a soft‑capture followed by secure latching, after which propellant is transferred through the fill‑and‑drain valve. The entire operation is autonomous, reducing reliance on ground‑based control and minimizing mission risk. UPSC Relevance Understanding on‑orbit servicing is vital for GS‑3 (Science & Technology) and GS‑2 (Polity) as it reflects policy shifts encouraging private participation in strategic sectors. The initiative aligns with the Prime Minister’s vision of a self‑reliant India (Atmanirbhar Bharat) and showcases how public funding mechanisms like TDB can catalyse indigenous innovation. Way Forward Complete ground‑based validation of SIDRP and achieve TRL‑7 certification. Conduct an in‑space demonstration mission to validate autonomous docking and propellant transfer. Develop a regulatory framework for commercial on‑orbit servicing, addressing liability, licensing, and space debris mitigation. Encourage collaboration between Indian Space Research Organisation (ISRO), private firms, and academia to build a sustainable servicing ecosystem. Successful deployment of indigenous docking and refueling technology will not only boost India’s commercial space capabilities but also position the country as a leader in sustainable space operations.