India’s Polar Satellite Launch Vehicle, in its thirty first flight (PSLV-C30) launched 1515 kg AstroSat into a 650 km orbit of 6 deg inclination to the equator. PSLV-C30 was launched from First Launch Pad (FLP) of Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota on 28th September 2015.  PSLV-C30 was the thirtieth consecutive successful flight of PSLV.  Along with AstroSat, six smaller satellites from Canada, Indonesia and the USA also launched into orbit.  Thus PSLV launched a total of seven satellites in its 31st flight


PSLV-C30 at a glance [ Vehicle list-off mass: 320.2 tonne Height: 44.4 m]
Nomenclature Core stage PS1
+6 Strap-
on motors
PS 2 PS 3 PS 4
Propellant Solid{HTPB based} Liquid{UH25 + N2 O4} Solid{HTPB based} Liquid{MMH + MON-3}
Propellant Mass (T)) 138.2{Core},6 x 12.2 {Strap-on} 41.35 7.6 1.6
Stage Dia (m) 2.8{Core}{ 1 Starp on} 2.8 2.0 1.34
Stage Length(m) 20{Core}12 {Strap-on} 12.8 3.6 3.0


HTPB: Hydroxyl Terminated Poly Butadiene, UH25: Unsymmetrical Dimethyl  Hydrazine + 25% Hydrazine Hydrate

       N2O4:Nitrogen Tetroxide, MMH : Mono Methyl  Hydrazine , MON-3: Mixed Oxides of  Nitrogen