Vikas (rocket engine)

From Wikipedia, the free encyclopedia
  (Redirected from Vikas engine)
Jump to: navigation, search
Vikas engine of ISRO.JPG
Model of the Vikas engine
Country of origin India
Designer ISRO
Manufacturer Godrej & Boyce[1][2][3][4]
Status Active
Liquid-fuel engine
Propellant N2O4 / UDMH
Cycle Gas generator
Thrust 800 kN[5]
Chamber pressure 5.86 MPa,(58.5 bar) [6]
Isp (vac.) 290 seconds (2.8 km/s)[6]
Length 3.70 m (12.1 ft)(Vikas-4B)
Used in
2nd stage of PSLV and GSLV
Main stage L110 of GSLV Mk.III

The Vikas is a liquid fueled rocket engine built by Indian Space Research Organisation (ISRO).[7] It was developed at the Liquid Propulsion Systems Center 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 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.

The rocket benefited from technological cooperation from the Viking 4A engine built by CNES/SEP of France.[9][10][11] The primary difference being that the Vikas is rated for a longer burn time.


Type Nozzle






Area Ratio




Fuel Mix Rate Flow rate


Thrust(kN) Specific Impulse (Ns/kg) Launcher Stages
Sea Level Vacuum Sea Level Vacuum
Booster/first stage
Vikas-2 ~1.00 ~2.75 13.9 5.30 UDMH/N2O4 1.86 0.2469 600.5 680.5 2432 2756 GSLV Mk.I L40H Strapon
Vikas-2B ~1.00 ~2.75 13.9 5.30 UH25/N2O4 1.87 0.2710 677.7 765.5 2501 2824 GSLV Mk.II L40H Strapon
Vikas-X ~1.80 ~3.75 UH25/N2O4 0.2805 756.5 839.0 2697 2991 LVM3 L110 stage
Second stage
Vikas-4 ~1.50 ~3.50 5.35 UDMH/N2O4 1.86 0.2498 - 725.0 2903 GSLV Mk.I GS2 stage, PSLV PS2 stage
Vikas-4B ~1.80 ~3.70 5.85 UH25/N2O4 1.71 0.2716 - 804.5 2962 GSLV Mk.II GS2 stage, PSLV PS2 stage

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. 
  9. ^ "PSLV launches with IRNSS-1D to open India's 2015 campaign". NASA SpaceFlight. NASA. 28 March 2015. 
  10. ^ "India Successfully Launches Their Largest Rocket To Date Read more from Asian Scientist Magazine at:". The Asian Scientist. 24 December 2014.  External link in |title= (help)
  11. ^ "Class of 1974: Rocket science & reminiscences". India Today. IANS. 19 October 2015. 
  12. ^ Brügge, Norbert. "India's VIKAS engines and its relationship to the European Viking engines". B14643 Internet Presentation to Space Launch Vehicles. Norbert Brügge. Retrieved 11 December 2015.