TimeToScoot
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Cyrogenic engines use Liquid Hydrogen in place of Kerosene used by the Semi-Cyros. While cyrogenic engines are more efficient as compared to semi's (google specific impulse) and therefore can theoretically haul more weight, they are much more costly and much more technically challenging to make (esp. with increasing size) which is why Russians went to cyrogenics only after 1980's and used semi's before. ISRO should have also followed a similar path; but no, these idiots are probably like Kennedy in the 1960's - we are going there (moon) not because its easy but because its hard. LOL
Thanks for the reply buddy. Any information/estimation on how much the semi-cryogenic engine, once developed, will be able to put in both LEO and GTO?