ISRO Milestone: Successful Semi-Cryogenic Engine Preburner Ignition

The Indian Space Research Organisation (ISRO) has reached a major milestone in space propulsion technology with the successful ignition of a semi-cryogenic engine preburner. This achievement, achieved at the Semi Cryo Integrated Engine Test Facility (SIET) in Mahendragiri, signifies a significant step forward in India’s space exploration capabilities.

The semi-cryogenic engine, boasting a thrust of 2000 kN, utilizes a combination of Liquid Oxygen (LOX) and Kerosene propellants. Developed by the Liquid Propulsion Systems Centre (LPSC), with support from other ISRO launch vehicle centers, the engine aims to enhance the payload capability of the LVM3 and future launch vehicles.

The assembly and testing of the propulsion modules were conducted at the ISRO Propulsion Complex (IPRC) in Mahendragiri. The first ignition trial, conducted successfully on May 2, 2024, was dedicated to the nation by the honorable Prime Minister of India. This accomplishment demonstrates ISRO’s dedication to advancing space propulsion technology.

The ignition of the semi-cryo pre burner was achieved using a start fuel ampule, utilizing a combination of Triethyle Alumnide and Triethyle Boron developed by the Vikram Sarabhai Space Centre (VSSC). The ignition process underwent rigorous testing at the Propulsion Research Laboratory Division (PRLD) facility of VSSC to ensure reliability and performance.

The successful ignition of the semi-cryo preburner marks a significant accomplishment in ISRO’s development of semi-cryogenic propulsion systems. This achievement paves the way for further development tests on the engine powerhead test article and fully integrated engine. Additionally, ISRO is progressing with the development of a semi-cryo stage with a propellant loading capacity of 120 tons.

ISRO’s successful ignition of the semi-cryo preburner represents a crucial step forward in India’s space exploration journey. As the organization continues to push boundaries and innovate in space propulsion technology, the prospects for future space missions and exploration endeavors are brighter than ever.