ISRO chairman Dr K Radhakrishnan said that two major ground tests remained before integrating the GSLV vehicle for launch.
"A lot of ground tests have already been conducted and we need to do two major ground tests this year, scheduled from September to November. Once the tests are successful the cryogenic stage will be integrated into the GSLV vehicle for launch", he told reporters at the sidelines of a convocation here.
The previous two GSLV launches by the premier space agency were unsuccessful.
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