The Indian Space Research Organisation (ISRO) has successfully tested a sub-scale thrust chamber for its next-generation LOX-Methane engine. The test took place on January 27, 2026, at the Thrust Chamber Test facility at the ISRO Propulsion Complex in Mahendragiri. ISRO reported, "The sub-scale thrust chamber and single element injector head were successfully tested to a chamber pressure of 56 bar." These parts were made using additive manufacturing technology. The agency confirmed, "Ignition and flame sustenance inside the thrust chamber were achieved and performance of all systems were normal." ISRO said this tested article will help choose the best injector setup after further hot tests. Development of key engine subsystems is underway at ISRO's Liquid Propulsion Systems Centre, with testing of smaller scale models already started. ISRO stated, "An optimally designed thrust chamber with injector head is key to the success of any cryogenic engine." They added, "ISRO has successfully conducted the first hot test of the high thrust LOX-Methane Engine at thrust chamber level with a single element injector."