Encyclopedia Astronautica
PSLV-4


N2O4/MMH propellant rocket stage. Loaded/empty mass 2,920/920 kg. Thrust 14.00 kN. Vacuum specific impulse 308 seconds.

No Engines: 2.

AKA: Polar Satellite Launch Vehicle.
Status: Active.
Gross mass: 2,920 kg (6,430 lb).
Unfuelled mass: 920 kg (2,020 lb).
Height: 2.60 m (8.50 ft).
Diameter: 1.34 m (4.39 ft).
Span: 2.02 m (6.62 ft).
Thrust: 14.00 kN (3,148 lbf).
Specific impulse: 308 s.
Burn time: 425 s.
Number: 20 .

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Associated Countries
Associated Engines
  • PSLV-4 ISRO N2O4/MMH rocket engine. 7 kN. Isp=308s. Used on PSLV launch vehicle. First flight 1993. More...

Associated Launch Vehicles
  • PSLV Indian third-generation launch vehicle, large enough to carry polar-orbiting earth resources satellites. More...
  • PSLV C Indian all-solid orbital launch vehicle. Five stage vehicle consisting of 6 x PSOM + 1 x S139 + 1 x PS2 + 1 x PS3 + 1 x PS4 More...

Associated Propellants
  • N2O4/MMH Nitrogen tetroxide became the storable liquid propellant of choice from the late 1950's. Monomethylhydrazine (CH3NHNH2) is a storable liquid fuel that found favour in the United States for use in orbital spacecraft engines. Its advantages in comparison to UDMH are higher density and slightly higher performance. More...

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