PSLV
Polar Satellite Launch Vehicle
Polar Satellite Launch Vehicle
4-stage launch vehicle
Payload capacity (XL variant):
3800 kg to LEO
1750 kg to SSO
1300 kg to GTO
Variants:
G (Generic) - Retired
CA (Core Alone)
DL (2 boosters)
QL (4 boosters)
XL (6 boosters)
Mass of launch vehicle (XL variant): 320000 kg
Height of launch vehicle: 44m
Max Diameter of launch vehicle: 2.8m
First launch on: 20 September 1993
Total launches: 57 (54 successes, 2 failures and 1 partial failure)
Side Boosters (PSOM-XL):
- S12 Solid Rocket Motor
- Propellant - HTPB (Hydroxyl-terminated Polybutadiene)
- Height - 12m
- Diameter - 1m
- Thrust - 703.5kN
- Specific Impulse (Isp) - 262 sec
- Burn time - 70 sec
- Propellant mass: 12200 kg
- 6x on XL, 4x on QL, 2x on DL, none on CA. (G variant had 6x PSOM - S9 non XL version)
First stage/Core stage (PS1):
- S139 Solid Rocket Motor
- Propellant - HTPB (Hydroxyl-terminated Polybutadiene)
- Height - 20m
- Diameter - 2.8m
- Thrust - 4846.9kN
- Specific Impulse (Isp) - 237 sec (at sea level), 269 sec (in vacuum)
- Burn time - 110 sec
- Propellant mass: 138200 kg
Second stage (PS2):
- Hypergolic liquid propellant stage
- Propellants - UH25 (fuel) and N2O4 (oxidiser)
- Engine - 1x Vikas
- Height - 12.8m
- Diameter - 2.8m
- Thrust - 803.7kN
- Specific Impulse (Isp) - 293 sec (in vacuum)
- Burn time - 133 sec
- Propellant mass: 42000 kg
Third stage (PS3):
- S7 Solid Rocket Motor
- Propellant - HTPB (Hydroxyl-terminated Polybutadiene)
- Height - 3.6m
- Diameter - 2m
- Thrust - 250kN
- Specific Impulse (Isp) - 295 sec (in vacuum)
- Burn time - 113.5 sec
- Propellant mass: 7600 kg
Fourth Stage (PS4):
- Hypergolic liquid propellant stage
- Propellants - MMH (fuel) and MON (oxidiser)
- Engine - 2x ~7.5kN engines
- Height - 3m
- Diameter - 1.3m
- Thrust - 14.66kN
- Specific Impulse (Isp) - 308 sec (in vacuum)
- Burn time - 525 sec
- Propellant mass: 2500 kg max (variable propellant load)
Work in progress