ISRO is considering using kerosene for semi-cryogenic engine
Presently, the fuel being used, which is a combination of liquid hydrogen and liquid oxygen, is heavier and needs to be stored at -253 degree Celsius.
ISRO will reportedly flight-test the semi-cryogenic engine by 2021 if everything goes as planned.
"Kerosene is a fuel lighter than the conventional combination of liquid hydrogen and liquid oxygen but it gives higher thrust. Therefore kerosene occupies less space and more propellant can be packed in the semi-cryogenic engine's fuel compartment. However, liquid oxygen will be retained as oxidiser. The advantage of using this semi-cryogenic engine is the payload capacity of the launch vehicle will increase from four tonnes to six tonnes. This kind of rocket with the semi-cryogenic engine can therefore take heavier satellites into space and can also be used for interplanetary missions and deep space missions," Dr
"We will only replace the second stage of the launch vehicle like
"Space agencies of many countries like the US and Russia have been using the semi-cryogenic engine as it gives high thrust. In fact, Falcon-9 of SpaceX (the first US commercial company whose rocket has made multiple flights to the
The semi-cryogenic engine project was cleared by the Union Cabinet in 2008 at an estimated cost of Rs 1,798 crore. While initially the technology was to be developed in 2014, the project got delayed.
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