GSLV

Development of Geo-synchronous Satellite Launch Vehicle (GSLV) has been undertaken to achieve capacity to launch 2500-Kg class of communication satellites in to geo-synchronous transfer orbit. INSAT-1 weighed 1200 Kg and INSAT-2, almost 2000 Kg. Typically, geo-stationary payloads now-a-days need 2.5 M.tonnes. Hence the most efficient method of reaching the orbit is preferred. GSLV is a three stage vehicle-the first stage employs a 129 tonnes solid propellant core motor with four liquid propellant strap-ons with a loading of 40 tonnes each. The second stage is a liquid propulsion system with a propellant loading of 37.5 tonnes and the upper stage is a cryogenic engine with a loading of 12 tonnes using liquid oxygen and liquid hydrogen that remain liquid only at very low temperatures.

A Science Park has been organised behind the Children’s Museum as part of an events to mark the completion of 151 years of Government Museum, Chennai. Twenty-two open-air exhibits are on display as play-models, which will teach and popularise the laws of science among children.