Geosynchronous Satellite Launch Vehicle

GSLV

GSLV-F14 carrying INSAT-3DS at the Satish Dhawan Space Centre Second Launch Pad
Function	Medium-lift Launch System
Manufacturer	ISRO
Country of origin	India
Cost per launch	US$47 million[1]
Size
Height	49.13 m (161.2 ft)[2]
Diameter	2.8 m (9 ft 2 in)
Mass	414,750 kg (914,370 lb)
Stages	3
Capacity
Payload to LEO
Mass	6,000 kg (13,000 lb)[3]
Payload to SSO
Mass	3,000 kg (6,600 lb)[3]
Payload to GTO
Mass	2,500 kg (5,500 lb)[2][4]
Launch history
Status	Mk I: Retired Mk II: Active
Launch sites	Satish Dhawan Space Centre
Total launches	16 + 8 (planned)
Success(es)	10
Failure(s)	4
Partial failure(s)	2
First flight	Mk.I: 18 April 2001 Mk.II: 15 April 2010
Last flight	Mk.I: 25 December 2010 Mk.II: 17 February 2024
Type of passengers/cargo	INSAT GSAT (South Asia Satellite) GISAT NVS NISAR
Boosters
No. boosters	4 L40 Hs
Height	19.7 m (65 ft)[5]
Diameter	2.1 m (6 ft 11 in)
Propellant mass	42,700 kg (94,100 lb) each
Powered by	1 L40H Vikas 2
Maximum thrust	760 kN (170,000 lbf)[6]
Total thrust	3,040 kN (680,000 lbf)
Specific impulse	262 s (2.57 km/s)
Burn time	154 seconds
Propellant	N2O4 / UDMH
First[6][5] stage
Height	20.2 m (66 ft)
Diameter	2.8 m (9 ft 2 in)
Propellant mass	138,200 kg (304,700 lb)
Powered by	1 S139 Booster
Maximum thrust	4,846.9 kN (1,089,600 lbf)
Specific impulse	237 s (2.32 km/s)
Burn time	100 seconds
Propellant	HTPB (solid)
Second[6][5] stage
Height	11.6 m (38 ft)
Diameter	2.8 m (9 ft 2 in)
Propellant mass	39,500 kg (87,100 lb)
Powered by	1 GS2 Vikas 4
Maximum thrust	846.8 kN (190,400 lbf)
Specific impulse	295 s (2.89 km/s)
Burn time	139 seconds
Propellant	N2O4 / UDMH
Second GS2 (GL40)[6][7] stage
Height	11.9 m (39 ft)
Diameter	2.8 m (9 ft 2 in)
Propellant mass	42,500 kg (93,700 lb)
Powered by	1 GS2 Vikas 4
Maximum thrust	846.8 kN (190,400 lbf)
Specific impulse	295 s (2.89 km/s)
Burn time	149 seconds
Propellant	N2O4 / UDMH
Third[5] stage (GSLV Mk I) – CUS
Height	N/A
Diameter	2.8 m (9 ft 2 in)
Propellant mass	N/A
Powered by	1 KVD-1
Maximum thrust	70 kN (16,000 lbf)
Specific impulse	462 s (4.53 km/s)
Burn time	N/A
Propellant	LOX / LH2
Third[5] stage (GSLV Mk II) – CUS12
Height	8.7 m (29 ft)
Diameter	2.8 m (9 ft 2 in)
Propellant mass	12,800 kg (28,200 lb)
Powered by	1 CE-7.5
Maximum thrust	75 kN (17,000 lbf)
Specific impulse	454 s (4.45 km/s)
Burn time	718 seconds
Propellant	LOX / LH2
Third[7] stage (GSLV Mk II) – CUS15
Height	9.9 m (32 ft)
Diameter	2.8 m (9 ft 2 in)
Propellant mass	15,000 kg (33,000 lb)
Powered by	1 CE-7.5
Maximum thrust	75 kN (17,000 lbf)
Specific impulse	454 s (4.45 km/s)
Burn time	846 seconds
Propellant	LOX / LH2
[edit on Wikidata]

Geosynchronous Satellite Launch Vehicle (GSLV) is a class of expendable launch systems operated by the Indian Space Research Organisation (ISRO). GSLV has been used in fifteen launches since 2001.