ISRO'SSecond short hot test of semicryogenic engine a success

 The Indian Space Research Organisation (ISRO) has successfully conducted a short duration hot test of the semicryogenic engine at its facility in the ISRO Propulsion Complex (IPRC), Mahendragiri.


This ignition test, con-ducted on April 24, is the second milestone after the first successful hot test on March 28, which was a ma-jor breakthrough in the semicryogenic engine test programme.


In this test, the Engine Power Head Test Article, encompassing all engine systems except the thrust chamber, was subjected to a hot test for a duration of 3.5 seconds that validated the engine start-up se quence. During the test, the engine was successful ly ignited and operated up


to 60% of its rated power level, demonstrating stable and performance. controlled


"These tests are part of a planned series of evalua tions designed to validate the design integrity and performance of critical subsystems, including the low-pressure and high pressure turbo pumps, pre-burner and associated


Significant feat: This is the second milestone after the first successful hot test conducted on March 28. SPECIAL ARRANGEMENT


control systems. The re-sults provided crucial data to finalise the operational sequencing of the full sem-icryogenic engine," ISRO said.


Further qualification tests are scheduled to com-prehensively validate the engine system, ultimately. paving the way for its in duction into ISRO's launch vehicles.


Meanwhile, the launch campaign activities for NA SA-ISRO Synthetic Aper-ture Radar (NISAR) satellite onboard the GSLV-F16 has already commenced in Sri-harikota, ISRO said.


The Second Stage (GS2) of ISRO's GSLV launch veh-icle was flagged off by V. Narayanan, Secretary, De-partment of Space/ Chair-man, ISRO, on March 24, 2025, from the ISRO Pro-pulsion Complex (IPRC), Mahendragiri, to the launch complex at Srihari-kota.


"The Directors of ISRO Propulsion Complex (IPRC) and Vikram Sarab-hai Space Centre (VSSC) al-so 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 Syn thetic Aperture Radar (NJ-SAR) satellite

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