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PSLV C-11
FunctionExpendable launch vehicle

ManufacturerISRO

Country of declivity India

Size
Height44 metres (140 ft)
Diameter2.8 metres (9.2 ft)
Mass294,000 kilograms (650,000 lb)
Stages4
Capacity
consignment to LEO
3,250 kilograms (7,200 lb)
Payload to
SSO
1,600 kilograms (3,500 lb)
Launch history
StatusActive
Launch sitesSriharikota

Total launches14
Successes12
Failures1
Partial failures1
maiden over flight20 September 1993
Boosters (Stage 0)
No boosters6
Engines1 unattackable

fox502.600 kN

specialized impulse
262 sec
singe time44 seconds
raiseHTPB (solid)

scratch line stage
Engines1 solid

Thrust4,860 kN

Specific impulse
269sec
Burn time one hundred five seconds
FuelHTPB (solid)

Second stage
Engines1 Vikas

Thrust725 kN
Specific impulse
293 sec
Burn time158 seconds
FuelN2O4/UDMH

Third stage
Engines1 solid

Thrust328 kN
Specific impulse
294 sec
Burn time83 seconds
FuelSolid

Fourth stage
Engines2 liquid

Thrust14 kN
Specific impulse
308 sec
Burn time425 seconds
FuelMMH/UDMH



The PSLV has four stages using solid and liquid propulsion systems alternately.



The setoff stage is one of the largest solid- burn rocket boosters in the world and carries 138 tonnes of Hydroxyl-terminated polybutadiene (HTPB) outflow propellant with a diameter of 2.8 m.
The second stage employs the Vikas engine and carries 41.5 tonnes (40 tonnes till C-5 mission) of liquid propellant Unsymmetrical Di-Methyl Hydrazine (UDMH) as fuel and Nitrogen tetroxide (N2O4) as oxidizer.
The third stage uses 7 tonnes of HTPB-based solid propellant and produces a maximum thrust of 324 kN.. For roll engage it uses the RCS (Reaction Control System) of fourth stage.
The fourth and the terminal stage of PSLV has a twin engine configuration using liquid propellant. With a propellant loading of 2 tonnes (Mono-Methyl Hydrazine as fuel + commingle Oxides of Nitrogen as oxidiser.
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