New Delhi: The Indian Space Research Organisation (ISRO) has achieved another significant milestone in its space programme by successfully conducting the flight acceptance hot test of the CE20 cryogenic engine designated for the seventh operational mission of the LVM3 launch vehicle (LVM3-M7). The test was carried out at the ISRO Propulsion Complex in Mahendragiri, Tamil Nadu, the space agency announced on Tuesday.
The LVM3, formerly known as GSLV MkIII, is India’s heaviest launch vehicle and plays a crucial role in carrying heavy satellites and deep-space missions. The powerful CE20 cryogenic engine powers the rocket’s upper stage and has been a key component in several of ISRO’s landmark missions.
According to ISRO, the CE20 engine is capable of operating at thrust levels ranging from 19 to 22 tonnes. The engine has already demonstrated its reliability by successfully powering eight consecutive LVM3 missions, including the prestigious Chandrayaan-2, Chandrayaan-3, and three commercial satellite launches.
The space agency also noted that the engine has successfully met the stringent human-rating qualification requirements, making it suitable for use in India’s ambitious Gaganyaan human spaceflight mission.
A major highlight of the latest test was the successful operation of the engine at a 22-tonne thrust level using the Nozzle Protection System (NPS) for the first time during a flight acceptance hot test. The newly introduced system simplifies the complex procedures involved in high-altitude engine testing, reduces resource requirements, and allows for longer test durations.
ISRO stated that the test results confirmed the excellent performance of both the CE20 engine and the Nozzle Protection System, paving the way for its integration into the upcoming LVM3-M7 mission.
The successful test further strengthens ISRO’s preparations for future satellite launches, commercial missions, and the country’s first crewed spaceflight programme, reinforcing India’s growing capabilities in advanced space technology.
