The Indian Space Research Organization (ISRO) successfully completed a critical flight acceptance hot test of its CE20 cryogenic engine on September 9, marking a significant milestone in its ongoing efforts to enhance launch vehicle capabilities. The test, conducted at ISRO’s Propulsion Complex in Mahendragiri, Tamil Nadu, involved operating the engine at uprated thrust conditions of 220 kilonewtons (kN).

The CE20 engine is designated for the C32 upper stage of the upcoming launch mission using the LVM3 rocket, also known as the GSLV Mk III. Enhancing the engine’s thrust is expected to increase the payload capacity of the LVM3, which is central to ISRO’s plans for more ambitious space missions, including the human spaceflight initiative known as Gaganyaan.

In addition to the engine test, ISRO successfully demonstrated the performance of the Liquid Oxygen (LOX) Tank Pressurization Module (LTPM). This module is designed for the C32 stages of the Gaganyaan programme, underscoring its role in supporting the future crewed missions by ensuring reliable pressurization of the cryogenic fuel tanks.

The agency confirmed the success of the test through a post on the social media platform X, noting that the acceptance test at the uprated thrust level was carried out as part of preparations for upcoming LVM3 flights. The improved CE20 engine will play a crucial role in boosting the capability of India’s heavy-lift launch vehicles, helping to meet both national and international satellite deployment demands.

This development represents another step forward in ISRO’s propulsion technology, reinforcing its position in the competitive global space sector as it advances both robotic and crewed space exploration initiatives.