Gas-generator cycle


The gas-generator cycle is a power cycle of a pumped liquid bipropellant rocket engine. Part of the unburned propellant is burned in a gas generator (or preburner) and the resulting hot gas is used to power the propellant pumps before being exhausted overboard, and lost. Because of this loss, this type of engine is termed open cycle.

Gas-generator rocket cycle. Some of the fuel and oxidizer is burned separately to power the pumps and then discarded. Most gas-generator engines use the fuel for nozzle cooling.


Gas-generator combustion engines include the following:

Rocket launch systems that use gas-generator combustion engines:

See alsoEdit


  1. ^ a b "Vulcain-2 Cryogenic Engine Passes First Test with New Nozzle Extension" (PDF). ESA.
  2. ^ "SpaceX Merlin Engine". SpaceX. Archived from the original on 2011-01-03.
  3. ^ a b "Delta 4 Data Sheet".
  4. ^ Joe Stangeland. "Turbopumps for Liquid Rocket Engines". Archived from the original on 2012-10-18.
  5. ^ "J-2X Engine".
  6. ^ a b "F-1 Engine Fact Sheet" (PDF). Archived from the original (PDF) on 2016-04-13. Retrieved 2013-04-17.
  7. ^ "RD-107". Encyclopedia Astronautica. Archived from the original on 2014-02-09.
  8. ^ a b Asraff, A and Muthukumar, R and Ramnathan, T and Balan, C (2008). Structural Analysis of Propulsion System Components of an Indigenous Cryogenic Rocket Engine. 44TH AIAA/ASME/SAE/ASEE JOINT PROPULSION CONFERENCE & EXHIBIT. doi:10.2514/6.2008-5120.{{cite conference}}: CS1 maint: multiple names: authors list (link)
  9. ^ "Neutron|Rocket Lab"
  10. ^ "Falcon 9 Overview". Archived from the original on 2013-05-01.
  11. ^ "Falcon Heavy Overview".
  12. ^ "Advanced Rocket Engines" (PDF). Institute of Space Propulsion, German Aerospace Center (DLR). Archived from the original (PDF) on 2012-09-04.
  13. ^ "Neutron|Rocket Lab"

External linksEdit

  • Rocket power cycles
  • Rocket-Engine Cooling at NASA