· Launched 1st rocket rohini on SLV 3 31 years ago
· Since then there hare been 32 launches
· PSLV ahs made 18 succesfully launched out of 19
· GSLV has made 4 succesfull launches out of 7
· PSLV C17 for first time launched a communication satellite. Howveer it has carried chandrayaan and kalpana 1 on similar missions before
· GSLV is more powerful than PSLV and can carry more load
· In case communications atellites size matters. Larger it is, more communication capacity it can handle and hence more economical
· It is now possible in world to launch 6 tonne classs satellites
· India’s GSLV can carry only abt 3 tonne
· GSLV mark III can carry 4 tonne
· India has started working on semi cryogenic engine comrpising liquid oxygen and kerosene which more powerful than cryogenic engine
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