The ISRO CE20 Cryogenic Engine

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ISRO successfully finished a crucial flight acceptance hot test for its home-grown CE20 cryogenic engine.
This engine will power the upcoming LVM3-M7 space mission.
The testing took place at the ISRO Propulsion Complex located in Mahendragiri.

The CE20 is a powerful, locally made cryogenic rocket engine. It runs the top stage of India's heaviest rocket, the Launch Vehicle Mark-3 or LVM3.
This engine burns extremely cold liquid fuels. This process creates the high speed required to send heavy satellites into deep space and high orbits.

The Liquid Propulsion Systems Centre of ISRO designed this engine. Engineers then tested and approved it at the propulsion complex.
This new engine replaced the older and smaller CE-7.5 engine. It has already successfully worked on 8 straight LVM3 missions, including Chandrayaan-2 and Chandrayaan-3.

The main goal is to have a highly dependable Indian engine for heavy satellites. This engine will also help launch internet satellites and support manned space missions like Gaganyaan.

It uses a simple system called the Gas-Generator Cycle. This design makes the engine more reliable, easier to start, and simple to control while in space.
The engine burns liquid hydrogen and liquid oxygen as fuel. This mixture gives the rocket high efficiency for carrying heavy loads.
It can change its power level between 19 and 22 tonnes of thrust. This flexibility keeps the rocket stable during different phases of flight.
The Nozzle Protection System allows scientists to test the large engine safely on the ground. This system saves money because India does not need expensive vacuum test facilities.
The engine has extra safety backups and a health monitoring system. These features ensure it meets the strict safety standards required for the Gaganyaan human space mission.

The CE20 acts as the final engine for the LVM3 rocket. It gives the last push to place heavy communication satellites into their exact orbits.
It will serve as the main engine for the Gaganyaan mission. It will safely carry Indian astronauts into space and place them in low-Earth orbit.