ISRO Successfully Conducts Hot Tests for Gaganyaan Mission

ISRO successfully conducts hot tests of Gaganyaan’s propulsion system, under Gaganyaan Mission marking a key step toward India’s first manned space mission in 2027.

ISRO Successfully Conducts Hot Tests for Gaganyaan Mission

Syllabus: Science and Technology – Space Technology
Source: New Indian Express

Context:

As Group Captain Shubhanshu Shukla, India’s first astronaut and designated Gaganyatri, gains practical experience aboard the International Space Station under the Axiom-4 mission, the Indian Space Research Organisation (ISRO) continues to make steady progress toward its ambitious Gaganyaan Mission—India’s first crewed spaceflight.

Key Development:

On Wednesday, ISRO announced the successful completion of two hot tests of the Gaganyaan Service Module Propulsion System (SMPS).

The tests lasted for 30 seconds and 100 seconds respectively.
These hot tests were conducted to validate the propulsion system’s design and performance under real conditions.
According to ISRO, the parameters remained normal and matched pre-test expectations.

Mission Timeline:

ISRO Chairman V. Narayanan confirmed that the Gaganyaan mission is scheduled for launch in March 2027.
He stressed that multiple rigorous tests are essential to ensure mission success on the first attempt.
“Every parameter is being verified thoroughly to avoid anomalies in later stages,” he stated.

Technical Highlights:

The Reaction Control System (RCS) thrusters and the Liquid Apogee Motor (LAM) performed successfully across different test modes.
The Service Module Propulsion System (SMPS) is crucial for:
- Orbital manoeuvring
- Abort scenarios during flight
SMPS comprises:
- Five Liquid Apogee Motors (LAMs)
- Sixteen Reaction Control System (RCS) thrusters
The Liquid Propulsion Systems Centre (LPSC) is leading the development of SMPS technology.

Next Steps:

With these successful short-duration tests, ISRO now plans to conduct a full-duration hot test in the coming weeks.
This is part of the step-by-step validation approach necessary for ensuring astronaut safety and mission reliability.

Conclusion:

The Gaganyaan mission is a major leap in India’s space journey, aiming to send Indian astronauts into low Earth orbit using indigenous technology. The successful hot tests mark a critical milestone in this process and reflect ISRO’s steady commitment toward achieving a safe and historic first manned mission.