Indeed this is very interesting to know the internals of a spacecraft! Here we go: The spacecraft configuration is a balanced mix of design from flight proven IRS/INSAT/Chandrayaan-1 bus. Modifications required for Mars mission are in the areas of Communication, Power, Propulsion systems (mainly related to Liquid Engine restart after nearly 10 months) and on-board autonomy. 390 litres capacity propellant ... Read More »