World Library  
Flag as Inappropriate
Email this Article


Article Id: WHEBN0024321439
Reproduction Date:

Title: Ce-7.5  
Author: World Heritage Encyclopedia
Language: English
Subject: CE-20, Comparison of orbital rocket engines, ISRO Propulsion Complex, Rocket engines, RD-120
Collection: Rocket Engines, Rocket Engines Using Hydrogen Propellant, Space Programme of India
Publisher: World Heritage Encyclopedia


Country of origin India
Date 2002
Designer Indian Space Research Organisation
Manufacturer Hindustan Aeronautics Limited,Godrej & Boyce,MTAR Technologies
Application Upper-stage booster
Status In use
Liquid-fuel engine
Propellant LOX / LH2[1]
Cycle Staged combustion
Chamber 1
Thrust (vac.) 73.5 kN[2]
Chamber pressure 5.8 MPa / 7.5 MPa
Isp (vac.) 454 seconds (4.45 km/s)
Length 2.14 m (7.02 ft)
Diameter 1.56 m (5.11 ft)
Dry weight 435 kg

The CE-7.5 is a cryogenic rocket engine developed by ISRO to power the upper stage of its GSLV Mk-2 launch vehicle. The engine was developed as a part of the Cryogenic Upper Stage Project (CUSP). It replaced the KVD-1 (RD-56) Russian cryogenic engine that powered the upper stage of GSLV Mk-1.


  • Overview 1
  • Specifications 2
  • Development 3
  • Applications 4
  • See also 5
  • References 6


CE-7.5 is a regeneratively cooled, variable thrust, staged combustion cycle[3][4] engine.


The specifications and key characteristics of the engine are:

  • Operating Cycle – Staged combustion[5]
  • Propellant Combination – LOX / LH2[6]
  • Maximum thrust (Vacuum) – 75 kN[7]
  • Operating Thrust Range (as demonstrated during GSLV Mk2 D5 flight) – 73.55 kN to 82 kN [8][2]
  • Chamber Pressure (Nom) – 58 bar
  • Engine Mixture ratio (Oxidizer/Fuel by mass) – 5.05
  • Engine Specific Impulse - 454 ± 3 seconds (4.452 ± 0.029 km/s)[5][3]
  • Engine Burn Duration (Nom) – 720 seconds[7]
  • Propellant Mass – 12800 kg[7]
  • Two independent regulators: thrust control and mixture ratio control[6]
  • Steering during thrust: provided by two gimbaled steering engines[6]


ISRO formally started the Cryogenic Upper Stage Project in 1994.[9] The engine successfully completed the Flight Acceptance Hot Test in 2008,[5] and was integrated with propellant tanks, third-stage structures and associated feed lines for the first launch. First flight attempt took place in April 2010 using GSLV Mk-2 D3 launch vehicle. However the engine failed to ignite.[2] On 27 March 2013 the engine was successfully tested under vacuum conditions. The engine performed as expected and was qualified to power the third stage of the GSLV Mk-2 rocket. On 5 January 2014 the cryogenic engine performed successfully and launched the GSAT-14 satellite using GSLV D5.[10][11]


CE-7.5 is being used in the third stage of ISRO's GSLV Mk-2 rocket.

See also


  1. ^
  2. ^ a b c
  3. ^ a b
  4. ^
  5. ^ a b c
  6. ^ a b c
  7. ^ a b c
  8. ^
  9. ^
  10. ^
  11. ^
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.