Propulsion CZ-2, CZ-2C, CZ-2D


      
YF-21B (= 4x YF-20)


     
YF-20

 YF=Yeiti Fadong



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


        
Vernier engines YF-23 and 23B

CZ-2

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

1

YF-21

2,784.6 2539 3,001.0 2736 138.96 126.7 1.0968 380.2
2

YF-24

    686.5 2814 34.45 132 0.2440 96.8

YF-23 (4)

   

44.1

2756

140 0.0160

CZ-2C

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

1

YF-21A

2,804.0 2557 3,020.3 2754 142.04 129.5 1.0968 391,1
2

YF-24A

    719.8 2834 34.94 129.1 0.2540 98.9

YF-23 (4)

   

44.1

2756

134 0.0160

CZ-2C+

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

1

YF-21B

2,961.6 2557 3,190.0 2754 141.,90 122.5 1.1584 390.7
2

YF-24B

    742.4 2922 35.06 129.2 0.2540 102.1

YF-23B (4)

   

46.1

2762

134 0.0167

 

 
 
  
The new engine YF-24E with long nozzle (+ 4x YF-23F Verniers)



YF-24E

CZ-2CS/SD

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

1

YF-21B

2,961.6 2557 3,190.0 2754 143.06 123.5 1.1584 393.9
2

YF-24B

    742.4 2922 54.17 179.8 0.2540 156.0

YF-23B (4)

   

46.1

2762

489

0.0167
SD  (Dispenser)

FG-47

    10.8 2824 0.138 36 0.0038 0.39

CZ-2CS-4

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

1

YF-21C

2,961.6 2557 3,190.0 2754 143.29 123.7 1.1584 394.6
2

YF-24E l.n.

    784.5 2971 54.68 177.0 0.2640 162.0

YF-23F (4)

   

47.2

2911

490

0.0162

CZ-2D

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

1

YF-21B

2,961.6 2557 3,190.0 2754 174.92 151 1.1584 481.7
2

YF-24B

    742.4 2922 35.57 131 0.2540 100.6

YF-23B (4)

   

46.1

2762

137

0.0167

CZ-2D-4

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

1

YF-21C

2,961.6 2557 3,190.0 2754 174.92 151 1.1584 481.7
2

YF-24E l.n.

    784.5 2971 35.49 126 0.2640 105.3

YF-23F (4)

   

47.2

2911

137

0.0162

 

 

FG-47


SpaB-54 (FG-47)