GSLV Mk.I and .II (2001-Active)
First Flight: April 18, 2001; Mk.II = April 15, 2010
Last Flight: (Active ?)
Stages: 3 + Boosters
Total Mass: 402 tons
Payload Mass: 5000 kg to LEO; 2,500 kg to GTO
Diameter: 2.8 m
Length: 49 m
Booster Stage
Type: Four Boosters
Arrangement: 1 x L40H Vikas 2
Thrust (kN): 2720 total
Propellant: N2O4/UDMH
ISP: 262 s
ISP (sea level):
Burn Time: 160 s
Gross Mass: ?
First Stage
Type: Core
Arrangement: 1 x S139
Thrust (kN): 4700
Propellant: HTPB (solid)
ISP: 166 s
ISP (sea level):
Burn Time: 100 s
Gross Mass: ?
Second Stage
Type: Core
Arrangement: 1 x GS2 Vikas 4
Thrust (kN): 720
Propellant: N2O4/UDMH
ISP: 295 s
ISP (sea level):
Burn Time: 150 s
Gross Mass: ?
Third Stage
Type: Mk.I = 12KRB Core; Mk.2 = CUS12 Core
Arrangement: Mk.I = 1 x KVD-1; Mk.2 = 1 x ICE
Thrust (kN): Mk.I = 69; Mk.2 = 73.5
Propellant: LOX/LH2
ISP: Mk.I = 460 s
ISP (sea level):
Burn Time: Mk.I = 720 s
Gross Mass: ?