VIKAS ENGINE:Vikas belongs to family of liquid fuelled rocket engines conceptualized and designed by ISRO’s Liquid Propulsion Systems Centre in the 1970s. It is the workhorse liquid rocket engine powering second stage of India’s Polar Satellite Launch Vehicle (PSLV), second stage and four strap on stages of Geosynchronous Launch Vehicle (GSLV) and is part of first stage i.e. twin engine core liquid stage (L110) of GSLV Mk-III. It was in news as the ISRO has recently successfully tested the high thrust version of the Vikas Engine.