Vikas (rocket engine)

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Vikas engine of ISRO.JPG
Model of the Vikas engine
Country of origin India
Designer ISRO
Manufacturer MTAR Technologies and Godrej & Boyce[1][2][3][4]
Status Active
Liquid-fuel engine
Propellant N2O4 / UDMH
Cycle Gas generator
Thrust 800 kN[5]
Chamber pressure 58.5 bar [6]
Isp (vac.) 290 seconds (2.8 km/s)[6]
Length 12.8 m (42 ft)
Diameter 2.8 m (9 ft 2 in)
Used in
2nd stage of PSLV and GSLV

The Vikas is a liquid fueled rocket engine built by Indian Space Research Organisation (ISRO).[7] It was developed by Nambi Narayanan and his team during the 1970s.[8] It is used in the Polar Satellite Launch Vehicle (PSLV) and the Geosynchronous Satellite Launch Vehicle (GSLV) series of expendable launch vehicles for space launch use.

The rocket engine benefited from technological advancements gained through cooperation on the Viking 4A engine built by CNES/SEP of France. The primary difference between the Viking and Vikas engines being that the latter is rated for a longer burn time.

The engine is used as the second stage of both the PSLV and the GSLV launch vehicles, with four strap-on boosters. The engine is also capable of gimballing. The GSLV MK-3 rocket uses two Vikas engines in its L110 core stage. The propellant loading for GSLV Mk-3 vikas engines is 55 tons compared to 40 tons for regular GSLV Mk-2 and PSLV rockets.

Technical details[edit]

The engine uses up about 40 metric tons of UDMH as fuel and Nitrogen tetroxide (N2O4) as oxidizer with a maximum thrust of 725 kN. An up-graded version of the engine has a chamber pressure of 58.5 bar as compared to 52.5 bar in the older version and produces a thrust of 800 kN.

External links[edit]


  1. ^ "Tata, L&T, Godrej & Boyce put in bids for drone project". Livemint. 2 June 2009. Retrieved 14 February 2014. 
  2. ^ "Manna from Mars ISRO's first mission to the red planet provides a fillip to its local component suppliers.". Business Today. 8 December 2013. Retrieved 14 February 2014. 
  3. ^ "Godrej & Boyce Mfg. Co. Ltd.". FAS. Retrieved 14 February 2014. 
  4. ^ "Godrej and Boyce Manufacturing Co. Ltd.". NTI. Retrieved 14 February 2014. 
  5. ^ India's VIKAS engines and its relationship to the European Viking engines Norbert Brügge, Germany 24 December 2014
  6. ^ a b PSLV Launch Vehicle Information Space Flight 101 24 December 2014
  7. ^ "ISRO tests Vikas engine". 2001-12-03. Retrieved 2012-12-11. 
  8. ^ "Unsung hero of moon mission is sad but forgiving". Retrieved 2012-12-11.