Engines CZ-2E, CZ-2F

Photos: S. Grahn, Sweden (2)
  
YF-21 (= 4x YF-20)



YF-21B (= 4x YF-20B)


            
  
YF-21B (= 4x YF-20B)

 YF=Yeiti Fadong

CZ-2E

Stage

Engines

Thrust s.l.

Isp s.l.

Thrust vac

Isp vac

Propellant

Burn time

Flow rate

Total Imp

-

-

kN

N*s/kg

kN

N*s/kg

tons

s

t/s

MN*s

Booster (1) YF-25 740.4 2556 797.5 2754 37.77 130.4 0.2896 104.0
1

YF-21B

2,961.6 2556 3,190.0 2754 184.07 158.9 1.1584 506.9
2

YF-26 (?) l.n.

    784.5 2971 84.78 295.8 0.2640  251.5

YF-23 (4)

   

47.2

2911

413

0.0162
EPKM FG-46     179.2 2864 5.444 87 0.0626 15.59
PAM-D2 TE-M-963-2     104.6 2914 4.264 119.8 0.0359 12.5

 CZ-2F

Stage

Engines

Thrust s.l.

Isp s.l.

Thrust vac

Isp vac

Propellant

Burn time

Flow rate

Total Imp

-

-

kN

N*s/kg

kN

N*s/kg

tons

s

t/s

MN*s

Booster (1) YF-25 740.4 2556 797.5 2754 39.42 136.1 0.2896 108.6
1

YF-21B/21C

2,961.6 2556 3,190.0 2754 186.31 160.8 1.1584 513.0
2

YF-26 (?)

    784.5 2971 86.15 301 0.2640 255.6

YF-23 (4)

   

47.2

2911

413

0.0162

 



YF-24B (=YF-22 + 4x YF-23)

                                 Photo: S.Grahn, Sweden
 
YF-22 engine


      
YF-26 (?) engine with long nozzle