YF-23 (rocket engine)
| Country of origin | China |
|---|---|
| First flight | 1974-11-05 |
| Designer | Academy of Aerospace Liquid Propulsion Technology |
| Application | Vernier engine |
| Associated L/V | Feng Bao 1, Long March 2, Long March 3 and Long March 4 |
| Status | In Production |
| Liquid-fuel engine | |
| Propellant | N2O4 / UDMH |
| Mixture ratio | 1.57 |
| Configuration | |
| Chamber | 4 |
| Performance | |
| Thrust (vac.) | 47.1 kN (10,600 lbf) |
| Isp (vac.) | 297 seconds (2.91 km/s) |
| Burn time | 300s |
| 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 | [1][2][3][4] |
The YF-23 is a liquid rocket vernier engine, burning N2O4 and UDMH.[5] It is used in along the YF-22 to form the YF-24 and YF-25 propulsion modules.[3][6][7][8]
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.[1][9][10]
- YF-23: Original version.
- YF-23B (AKA DaFY21-1): Improved version.[9][11][12]
- YF-23F: Improved version.[9]
Modules
This engine is bundled into modules along the YF-22 upper stage engine.[13][14][15][16]
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.[17]
References
- 1 2 Norbert Bgügge. "Asian space-rocket liquid-propellant engines". B14643.DE. Retrieved 2015-07-15.
- ↑ "Long March". Rocket and Space Technology. Retrieved 2015-07-08.
- 1 2 "YF-23". Encyclopedia Astronautica. Retrieved 2015-07-15.
- ↑ 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.
- ↑ 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.
- ↑ "YF-22/23". Encyclopedia Astronautica. Retrieved 2015-07-15.
- ↑ "YF-22A/23A". Encyclopedia Astronautica. Retrieved 2015-07-15.
- ↑ "YF-25". Encyclopedia Astronautica. Retrieved 2015-07-15.
- 1 2 3 Norbert Bgügge. "YF rocket engine history". B14643.DE. Retrieved 2015-07-15.
- ↑ Norbert Bgügge. "Propulsion FB-1". B14643.DE. Retrieved 2015-07-15.
- ↑ "Chapter 2 — General Description to LM-2E". LM-2E User's Manual. Issue 1999 (pdf). CASC. 1999. pp. 2–2. Retrieved 2015-07-08.
- ↑ "Chapter 2 — General Description to LM-3B". LM-3B User's Manual. Issue 1999 (pdf). CASC. 1999. pp. 2–2. Retrieved 2015-07-08.
- ↑ Norbert Bgügge. "Propulsion CZ-2, CZ-2C, CZ-2D". B14643.DE. Retrieved 2015-07-15.
- ↑ Norbert Bgügge. "Propulsion CZ-3, CZ-3A CZ-3B, CZ-3C". B14643.DE. Retrieved 2015-07-15.
- ↑ Norbert Bgügge. "Propulsion CZ-4A, CZ-4B, CZ-4C". B14643.DE. Retrieved 2015-07-15.
- ↑ 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.
- ↑ "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.
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