The Liquid Propulsion Systems Centre of ISRO dispatched the Crew Module for the first uncrewed mission of Gaganyaan (G1), the space agency said on Wednesday. The dispatch occurred after the complete integration of the liquid propulsion system.
ISRO plans to send an uncrewed mission to space before launching the crewed mission under its Gaganyaan project, marking the first step toward acquiring human spaceflight capabilities.
“On 21 January 2025, the Liquid Propulsion Systems Centre (LPSC) of ISRO dispatched the Crew Module for the first uncrewed mission of Gaganyaan (G1), after successfully completing the integration of the liquid propulsion system,” ISRO said in a statement.
LPSC, Bengaluru has dispatched the module to Satish Dhawan Space Centre, Sriharikota, officials said.
The Crew Module Propulsion System (CMPS), designed for precise three-axis control—Pitch, Yaw, and Roll—of the crew module, is a key component of the mission. This bi-propellant-based Reaction Control System (RCS) will be activated after the separation of the service module during the descent and re-entry phase, continuing until the parachute-based deceleration system is deployed.
“The system uses 12 100N thrusters, a pressurization system with high-pressure gas bottles, and a propellant feed system, along with the associated fluid control components,” an ISRO spokesperson said.
The 100N thrusters are rocket motors used in spacecraft for propulsion. Additionally, the Crew Module Uprighting System (CMUS), developed by the Vikram Sarabhai Space Centre (VSSC), was integrated into the module at LPSC.
ISRO also stated that the Crew Module will undergo further integration processes, including avionics package assembly, electrical harnessing, and checks at VSSC. Following this, it will be dispatched to the U R Rao Satellite Centre in Bengaluru for the final integration phase of the Orbital Module.
(With PTI Inputs)
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