Indigenous cryogenic engine puts a 1,982-kg communication satellite in orbit
One of India’s most ambitious dreams became a reality on Sunday when its Geosynchronous Satellite Launch Vehicle (GSLV-D5), powered by an indigenous cryogenic engine, effortlessly put the 1,982-kg GSAT-14 communication satellite into a perfect orbit after 17 minutes of flight.
The cryogenic engine built by the Indian Space Research Organisation (ISRO) fired for 12 of those 17 minutes.
The precision of the cryogenic upper stage was such that it put the GSAT-14 into an orbit with a perigee of 179 km, against the target of 180 km, and the apogee achieved was off by a mere 50 km for a target of 36,000 km.
The grand success caps 20 years of hard work by ISRO’s engineers, after being denied cryogenic technology under pressure from the U.S., suffering a heartbreaking failure with an indigenous cryogenic engine flight in April 2010 and having had to scrub its second attempt with an indigenous cryogenic engine in August 2013. “I am proud to say that ISRO has done it…,” ISRO Chairman K. Radhakrishnan announced.
The mission’s success means India now has the ability to put satellites weighing more than two tonnes in orbit, joining the elite club of the U.S., Russia, France, Japan and China who have mastered this perilous technology of using cryogenic propellants -- liquid oxygen at minus 183 degrees Celsius and liquid hydrogen at minus 253 degrees’ Celsius.