The story so far: A Bengaluru-based space company, Astrobase Space Technologies, on Friday (August 7, 2026) unveiled India’s first privately built 800 kN Full-Flow Staged Combustion (FFSC) LOX-Methane rocket engine named EVEREST. This makes India the fourth nation to have FFSC engine technology after Russia, USA and China. What are high thrust FFSC rocket engines? The FFSC rocket engines are very powerful engines where the propellant flows from the tank or the source to the rocket engine’s combustion chamber. How are FFSC rocket engines different from conventional engines?