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YF-23 (rocket engine)

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This article is about the Chinese rocket engine. For the American fighter jet, see Northrop YF-23.Chinese rocket engine
YF-23E
Country of originChina
First flight1974-11-05
DesignerAcademy of Aerospace Liquid Propulsion Technology
ApplicationVernier engine
Associated LVFeng Bao 1, Long March 2, Long March 3 and Long March 4
StatusIn Production
Liquid-fuel engine
PropellantN2O4 / UDMH
Mixture ratio1.57
Configuration
Chamber4
Performance
Thrust, vacuum47.1 kN (10,600 lbf)
Specific impulse, vacuum297 seconds (2.91 km/s)
Burn time300s
Used in
Long March 2F, Long March 3A, Long March 3B, Long March 3C, Long March 4B and Long March 4C second stage.
References
References

The YF-23 is a liquid rocket vernier engine, burning N2O4 and UDMH. It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules.

Versions

The basic engine has been used since the Feng Bao 1 rocket and has been the vernier propulsion of the Long March 2, Long March 3 and Long March 4 families second stage.

  • YF-23: Original version.
  • YF-23B (AKA DaFY21-1): Improved version.
  • YF-23F: Improved version.

Modules

This engine is bundled into modules along the YF-22 upper stage engine.

The relevant modules for second stage application are:

  • YF-24: A module comprising an YF-22 and a single YF-23 verniers.
  • YF-24B: A module comprising an YF-22B and a single YF-23B verniers.
  • YF-24E: A module comprising an YF-22E and a single YF-23F verniers.

References

  1. ^ Norbert Bgügge. "Asian space-rocket liquid-propellant engines". B14643.DE. Archived from the original on 2015-07-17. Retrieved 2015-07-15.
  2. "Long March". Rocket and Space Technology. Retrieved 2015-07-08.
  3. ^ "YF-23". Encyclopedia Astronautica. Archived from the original on June 27, 2002. Retrieved 2015-07-15.
  4. Sutton, George Paul (November 2005). "Liquid Rocket Propellant Engines in the People's Republic of China". History of Liquid Propellant Rocket Engines. AIAA. p. 873. ISBN 978-1563476495. Retrieved 2015-07-15.
  5. Harvey, Brian (2004). "Launch Centers Rockets and Engines". China's Space Program — From Conception to Manned Spaceflight. Springer Science & Business Media. p. 232. ISBN 978-1852335663. Retrieved 2015-07-15.
  6. "YF-22/23". Encyclopedia Astronautica. Archived from the original on May 31, 2002. Retrieved 2015-07-15.
  7. "YF-22A/23A". Encyclopedia Astronautica. Archived from the original on June 26, 2002. Retrieved 2015-07-15.
  8. "YF-25". Encyclopedia Astronautica. Archived from the original on November 17, 2002. Retrieved 2015-07-15.
  9. ^ Norbert Bgügge. "YF rocket engine history". B14643.DE. Archived from the original on 2015-07-17. Retrieved 2015-07-15.
  10. Norbert Bgügge. "Propulsion FB-1". B14643.DE. Retrieved 2015-07-15.
  11. "Chapter 2 — General Description to LM-2E". LM-2E User's Manual. Issue 1999 (PDF). CASC. 1999. p. 2. Retrieved 2015-07-08.
  12. "Chapter 2 — General Description to LM-3B". LM-3B User's Manual. Issue 1999 (PDF). CASC. 1999. p. 2. Retrieved 2015-07-08.
  13. Norbert Bgügge. "Propulsion CZ-2, CZ-2C, CZ-2D". B14643.DE. Retrieved 2015-07-15.
  14. Norbert Bgügge. "Propulsion CZ-3, CZ-3A CZ-3B, CZ-3C". B14643.DE. Retrieved 2015-07-15.
  15. Norbert Bgügge. "Propulsion CZ-4A, CZ-4B, CZ-4C". B14643.DE. Retrieved 2015-07-15.
  16. Harvey, Brian (2013). "Chapter 3 — The Program". China in Space — The Great Leap Forward. Springer Science & Business Media. p. 87. ISBN 978-1461450436. Retrieved 2015-07-15.
  17. "2.3 LM-3B and LM-3BE Launch Vehicles". LM-3A Series Launch Vehicle User's Manual. Issue 2011 (PDF). CASC. 2011. pp. 2–16. Retrieved 2015-07-08.
Rocket engines and solid motors for orbital launch vehicles
Liquid
fuel
Cryogenic
Hydrolox
(LH2 / LOX)
Methalox
(CH4 / LOX)
Semi-
cryogenic
Kerolox
(RP-1 / LOX)
Storable
Hypergolic (Aerozine,
UH 25, MMH, or UDMH
/ N2O4, MON, or HNO3)
Other
Solid
fuel
  • * Different versions of the engine use different propellant combinations
  • Engines in italics are under development


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