ISRO’s second short hot test of semicryogenic engine a success

A short period hot test of the semicryogenic engine was efficiently carried out on the test facility in ISRO Propulsion Complex (IPRC), Mahendragiri. Photo: Special Arrangement

The Indian Space Research Organisation (ISRO) has efficiently carried out a short period hot test of the semicryogenic engine at its facility within the ISRO Propulsion Complex (IPRC), Mahendragiri.

This ignition test carried out on April 24, 2025 is the second milestone after the profitable first hot test on March 28, 2025, that was a main breakthrough within the testing of the semicryogenic engine test programme.

In this test, the Engine Power Head Test Article, encompassing all engine programs besides the thrust chamber, was subjected to a hot test for a period of 3.5 seconds that validated the engine start-up sequence. During the test, the engine was efficiently ignited and operated as much as 60% of its rated energy stage, demonstrating secure and managed efficiency.

“These tests are part of a planned series of evaluations designed to validate the design integrity and performance of critical subsystems, including the low-pressure and high-pressure turbo pumps, pre-burner and associated control systems. The results provided crucial data to finalise the operational sequencing of the full semicryogenic engine,” ISRO stated.

Further qualification checks are scheduled to comprehensively validate the engine system, in the end paving the way in which for its induction into ISRO’s launch automobiles.

NISAR satellite tv for pc

Meanwhile, the launch marketing campaign actions for NASA-ISRO Synthetic Aperture Radar (NISAR) satellite tv for pc onboard the GSLV-F16 has already commenced in Sriharikota, ISRO stated.

The Second Stage (GS2) of ISRO’s GSLV launch automobile was flagged off by V. Narayanan, Secretary, Department of Space/ Chairman, ISRO, on March 24, 2025, from the ISRO Propulsion Complex (IPRC), Mahendragiri, to the launch advanced at Sriharikota.

“The Directors of ISRO Propulsion Complex (IPRC) and Vikram Sarabhai Space Centre (VSSC) also participated in the flag-off ceremony. This liquid stage is earmarked for the upcoming mission of GSLV (GSLV-F16), that will launch the NASA-ISRO Synthetic Aperture Radar (NISAR) satellite,” ISRO stated.