ISRO successfully test fired cryogenic engine for GSLV-Mark III rocket
Source :News Bharati English   Date :30-Jan-2017

Chennai, January 30: India’s foremost space agency Indian Space Research Organisation ISRO successfully test-fired it’s most powerful cryogenic engine. In order to give a boost to indigenous cryogenic technology, ISRO took its third step towards its landmark ‘GSLV MK III’ rocket.

The cryogenic stage was tested for the duration of 50 seconds at the ISRO Propulsion Complex at Mahendragiri in South India. This was the first test and the next test is planned for the duration of 640 seconds.

K. Sivan, Director of Vikram Sarabhai Space Centre, said that “the performance of the stage during the test was as predicted. The successful test of the stage in the first attempt itself demonstrates ISRO’s capability. This particular cryogenic stage is 100% indigenous. It is our own design and configuration. Though we realized the first indigenous cryogenic upper stage, the design is not ours. It’s of C-25.” C25 stage was conceptualized and designed BY Liquid Propulsion Systems Centre in collaboration with System Development Agencies from other three centres of ISRO- Vikram Sarabhai Space Centre VSCC, ISRO Propulsion Complex IPRC and Sathish Dhawan Space Centre SDSC.

It took 20 years for ISRO to develop this cryogenic technology. The 25-ton cryogenic technology aims to power India’s most powerful rocket, GSLV Mark. “It is very, very close to flight condition and that is why it is very significant. This indicates that we will be able to do the flight test successfully,” Sivan said.

The vehicle consists of two solid strap-on motors which contains 27.8 tons of propellants loaded in two independent tanks. During the flight, the propellant will be drawn from the stage to engine. This is tested in the first test. The C25 stage is the most powerful upper stage developed by ISRO and uses Liquid Oxygen (LOX) and Liquid Hydrogen (LH2) propellant combination. The propellants in the cryogenic engine are extremely cold. Liquid hydrogen is stored at -253 degrees Celsius, and the liquid oxygen is stored at -195 degrees Celsius.