India is inching closer to its historic human spaceflight mission, Gaganyaan, with the Indian Space Research Organisation (ISRO) announcing that it is ready to launch the first of three un-crewed flights by the end of this year. This major milestone comes after decades of research, testing, and infrastructure building. The mission, which aims to send Indian astronauts into orbit using an indigenous launch vehicle, is expected to culminate with a crewed flight by 2027. ISRO Chairman Dr. V Narayanan recently shared key updates on Gaganyaan’s progress, India’s participation in the upcoming Axiom Mission-4, and future plans for space docking and an Indian space station.
Final-Phase Testing Underway for Gaganyaan Systems
The groundwork for Gaganyaan has intensified, with most systems entering their final development stages. According to Dr. Narayanan, 95% of the human-rating process for the LVM Mk3 launch vehicle is complete, along with full structural tests. The crew module, designed to ensure astronaut safety, is also nearing completion, though it involves complex engineering challenges, especially in managing life support systems. The environmental control and life support mechanisms, which maintain pressure, temperature, and gas composition within the module, are undergoing rigorous qualification tests.
Safety is paramount, and ISRO has developed a crew escape system powered by high-thrust solid motors. Designed to operate even at rocket velocities of 25,000 km/h, this system ensures crew evacuation in emergencies. Thermal protection for re-entry and parachute systems for splashdown have been successfully developed, with nine parachutes set to aid safe sea landings. The un-crewed flights will carry Vyomitra, a humanoid robotic payload, to simulate crewed conditions before sending humans into space.
Spaceflight Training and International Missions
To gain deeper insights into human spaceflight, ISRO has chosen Group Captain Shubhanshu Shukla for the Axiom Mission-4 to the International Space Station (ISS), scheduled for June. His experience is expected to bring valuable data and training for future Indian missions. Dr. Narayanan emphasized that even past missions, like Rakesh Sharma’s 1984 flight, continue to offer lessons today.
Looking ahead, ISRO is preparing for Chandrayaan-4, a lunar sample return mission requiring space docking, a complex maneuver involving high-speed alignment of orbiting modules. This technique is crucial for both Chandrayaan-4 and the future Bhartiya Antriksh Station, which will require multiple modules to dock in space. After the success of SpaDeX in January and a second demonstration in April, ISRO is now confident in its docking technology and plans further testing in upcoming missions.
