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Engines

Last updated: December 20, 1999


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

 

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