ISRO Marks Ten Years of Progress Towards Human Spaceflight
December 18, 2014, was a milestone for ISRO when the Indian Coast Guard successfully recovered a Crew Module from the Bay of Bengal, about 1,600 km from SDSC-SHAR. This recovery followed the maiden flight of the LVM3-X, which lifted a 3,775 kg Crew Module to a suborbital altitude of 126 km. The module used thrusters for orientation and parachutes for a smooth splashdown. Developed as part of pre-project activities for the Human Spaceflight Project, this mission laid the groundwork for Gaganyaan, officially approved in 2019.
Now, a decade later, ISRO is preparing for the uncrewed Gaganyaan mission by beginning the stacking of the human-rated LVM3 (HLVM3) at SDSC-SHAR.
Enhanced Design for Human Safety: The HLVM3
The HLVM3 launch vehicle is an advanced version of the LVM3, designed to meet rigorous human safety standards. This three-stage vehicle, standing 53 metres tall and weighing 640 tonnes, can carry payloads of up to 10 tonnes to low-Earth orbit (LEO). Its Crew Escape System (CES) ensures safety by allowing the Crew Module to be ejected during emergencies from the launch pad until atmospheric separation.
ISRO has also refined the Crew Module design and integrated key systems for reliability. The vehicle and associated systems, including the Crew Module, are undergoing final tests at ISRO centres to prepare for the maiden uncrewed flight under Gaganyaan.
Milestones of the LVM3-X/CARE Mission
The LVM3-X/CARE mission in 2014 was a pivotal step for ISRO, achieving several technical milestones:
- Validation of LVM3’s performance through the atmospheric regime.
- Synchronised operation of S200 solid rocket boosters and Vikas engines.
- Complex control algorithms and stage separation mechanisms.
- Successful integration, testing, and re-entry technology demonstration.
This mission also tested the Crew Module’s blunt-body aerodynamics, thermal protection systems, and parachute-based deceleration. These achievements provided the foundation for the development of the Gaganyaan programme.
Looking Ahead: Gaganyaan and Beyond
Insights from the CARE mission have shaped ISRO’s human spaceflight programme. Tests like pad aborts, air-drops, and vehicle flights have refined the Crew Module’s design. The human-rated LVM3 has passed stringent ground and flight tests, ensuring safety even in off-nominal conditions.
The uncrewed missions of Gaganyaan will gather essential data to guarantee the safety of future Gaganyatris. The programme is also critical for India’s vision of constructing the Bharatiya Antariksh Station (BAS).
Prominent figures from the CARE mission, such as Dr S Somanath and Dr S Unnikrishnan Nair, continue to lead ISRO’s ambitious space initiatives. On December 18, 2024, ISRO initiated the stacking of the S200 motor’s nozzle segment for the HLVM3-G1/OM-1 mission. With all key systems in place, India’s journey to its first human spaceflight is closer than ever.