Engines |
Liquid Engines
Designation | Application | Propellants | Thrust (KN) |
Mass (kg) |
Length (m) |
Diameter (m) |
Isp (sec) |
Comments |
YF-1 | CZ-1 stage 1 | NA27S/UDMH | 255 | 2.0 | 240 | |||
YF-1A | CZ-1D stage 1 | NA27S/UDMH | 275 | 2.0 | 243 | |||
YF-2 | CZ-1 stage 1 | NA27S/UDMH | 1020 | 1180 | 2.65 | 2.25 | 240 | 4xYF-1 |
YF-2A | CZ-1D stage 1 | NA27S/UDMH | 1101 | 2.0 | 243 | 4xYF-1A | ||
YF-3 | CZ-1 stage 2 | NA27S/UDMH | 320 | 350 | 2.45 | 1.55 | 287 | |
YF-20 | FB-1,CZ-2C,3 stage 1 | N2O4/UDMH | 696 | 712.5 | 259 | |||
YF-20B | CZ-2C/SD,2D,2E,3,3A,3B,3C,4A,4B stage1; CZ-2E,3B,3C strap-ons | N2O4/UDMH | 740 | 712.5 | 260 | |||
YF-21 | FB-1,CZ-2C, 3 stage 1 | N2O4/UDMH | 2785 | 2850 | 3.3 | 3.5 | 259 | 4xYF-20 |
YF-21B | CZ-2C/SD,2D,2E,3,3A,3B,3C,4A,4B stage1 | N2O4/UDMH | 2962 | 2850 | 3.3 | 3.5 | 260 | 4xYF-20B |
YF-22 | FB-1,CZ-2C,2D,3,4A stage 2 | N2O4/UDMH | 720 | 289 | ||||
YF-22B | CZ-2C/SD,2E,3,3A,3B,3C,4B stage 2 | N2O4/UDMH | 738 | 298 | ||||
YF-23/23F | FB-1,CZ-2C,2D,3,4A stage 2 | N2O4/UDMH | 46 | 282 | Vernier engine (4 chambers) | |||
YF-23B | CZ-2C/SD,2E,3A,3B,3C,4B stage 2 | N2O4/UDMH | 47 | 289 | Vernier engine (4 chambers) | |||
YF-24/24F | FB-1,CZ-2C,3 stage 2; CZ-2D,4A stage 2 (YF-24F) |
N2O4/UDMH | 766 | 875 | 3.46 | 3.3 | YF-22 + YF-23/23F | |
YF-24B/24D | CZ-2C/SD,2E,3A,3B,4B stage 2; CZ-3 stage 2 later version (YF-24D) |
N2O4/UDMH | 789 | 957 | 3.48 | 3.3 | YF-22B + YF-23B/23F | |
YF-40 | CZ-1D stage 2; CZ-4A,4B stage 3 | N2O4/UDMH | 100 | 166 | 1.2 | 0.65 | 306 | |
YF-73 | CZ-3 stage 3 | LOX/LH2 | 44.15 | 236 | 1.4 | 2.2 | 420 | |
YF-75 | CZ-3A,3B,3C stage 3 | LOX/LH2 | 78.45 | 550 | 2.8 | 3.0 | 437 | |
Note: 1. There were FY designations used for early launchers (FB-1) which are similar to YF series but porduced by different factories, with slightly lower performance than YF. 2. Some report mentioned DaFY5, DaFY6, DaFY20 and DaFY21 engines. In fact, they are similar to YF-20B, YF-21B, YF-24B and YF-22B (maybe with slightly higher performance). DaFYs are used on CZ-3 serious, CZ-2D and 4A. 3. Thrust and Isp for first stage engines are sea-level, while all others are vacuum. 4. Data sources: China Aerospace magazine; Dietrich Haeseler |
Solid Motors
(Left to right: EPKM, PKM, FG-02, PKM-77, FG-23, FG-47.
Photo credit: China Aerospace)
Designation | Application | Propellants | Thrust (KN) |
Mass (kg) |
Length (m) |
Diameter (m) |
Isp (sec) |
Comments |
FG-02 | CZ-1 stage 3 | PS | 118 | 2050 | 3.98 | 0.77 | 254 | |
FG-14 | FSW-0 | 246 | 0.68 | 266 | Retrofire motor | |||
FG-15 | DFH-2 | HTPB | 37.95 | 525 | 1.42 | 0.90 | 288 | Apogee motor |
FG-15B | DFH-2A | HTPB | 40.92 | 580 | 1.49 | 0.90 | 289 | Apogee motor |
FG-23 | FSW-1 | HTPB | 265 | 0.68 | 280 | Retrofire motor | ||
FG-23A | FSW-2 | HTPB | 33 | 265 | 0.68 | 280 | Retrofire motor | |
FG-36 | FY-2, CZ-1D stage3(?) | HTPB | 44 | 729 | 1.53 | 0.90 | 289 | Apogee motor |
(PKM) | CZ-2E | Perigee Kick Motor | ||||||
(PKM-77) | CZ-2E | Perigee Kick Motor planned for GlobalStar | ||||||
FG-46 (EPKM) |
CZ-2E | HTPB | 179.2 | 6001 | 2.93 | 1.70 | 292 | Perigee Kick Motor |
FG-47 (CPKM) |
CZ-2C/SD stage 3 | HTPB | 10.79 | 160 | 0.85 | 0.54 | 288 | Smart Dispenser |
? | CZ-1D stage 3(?) | HTPB | 60.5 | 1.49 | 0.82 | 289 | ||
Note: 1. There are inconsistent reports for the CZ-1D 3rd stage engine: FG-36 or a more powerful motor listed at the last line. 2. FG-46 is also called SpaB-17; FG-47 is also called SpaB-54. PKM is also called SPTS-M14. 3. This table contains only motors for space missions. China has more and larger solid motors for missiles. 4. Data sources: China Aerospace magazine |