CALT / CASC

CZ -3

CZ -3+ CZ -3A  CZ -3B  CZ -3C
Overall
Vehicle
Operational from 29.01.1984 07.03.1988 08.02.1994 14.02.1996 25.04.2008
  to 01.02.1986 25.06.2000 13.01.2012 29.04.2012 24.02.2012
Orbital flights   3 10 23 20 8
Payload weight t GTO 1.20 GTO 1.50 GTO 2.65 GTO 5.20 GTO 3.80
Gross liftoff weight t 200.65 199.90 236.00 427.30 343.40
Gross propellant weight t 183.65  182.36 216.07  390.56  314.58
Total length m 44.17 46.60 52.52 54.84 54.84
Max. diameter (span) m 6.15 6.15 6.15 ? ?
Total liftoff thrust (s.l.) kN 2,785 2,804 2,962 5,923 4,442
Total impulse (vac) MN*s  517.7  519.6  627.4 1,110.6 902.0

Fairing

Total length m 5.84 7.27 8.89 9.56/8.58 9.56/8.58
Diameter m 2.60 3.00 3.35 4.00 4.00
Total weight t 0.60 0.80 0.80 1.10 1.20

Stage 3

Name            
  Length (+adapter) m 10.28 11.28 11.44 11.44 11.44
Diameter m 2.25 - 3.35 2.25 - 3.35 3.00 - 3.35 3.00 - 3.35 3.00 - 3.35
Liftoff weight t 10.35 10.20 19.60 20.20 20.20
Propellant weight t 8.65 8.50 17.60 18.19 18.19
Engines   YF-73 (4) YF-73+ (4) YF-75 (2) YF-75 (2) YF-75 (2)
Propellant   LH2/LOX LH2/LOX LH2/LOX LH2/LOX LH2/LOX
Total thrust (vac) kN 44.15 44.43 156.9 156.9 156.9
Specific impulse (vac) N*s/kg 4119 4168 4312 4312 4312
Burn time s 810 795 483 500 500
Total impulse (vac) MN*s 35.6 35.4 75.9 78.4 78.4
Stage 2

Name

   

 

     
  Length (+adapter) m 7.53 7.53 7.53 9.18 9.18
Diameter m 3.35 3.35 3.35 3.35 3.35
Liftoff weight t 39.00 38.90 33.46 54.60 54.10
Propellant weight t 35.00 34.90 29.46 49.61 49.12
Engines   YF-24 YF-24D YF-24B/24E YF-24B/24E YF-24E
Propellant   UDMH/N2O4

UDMH/N2O4

UDMH/N2O4 UDMH/N2O4 UDMH/N2O4
Total thrust (vac) kN 719.8 (+46.1) 742.4 (+47.2) 742.4 (+47.2) 742.4 (+47.2) 742.4 (+47.2)
Specific impulse (vac) N*s/kg 2834 2922 2922 2922 2922
Burn time s 129.1 (134) 128.5 (136) 109 (114) 183 (200) 183 (200)
Total impulse (vac) MN*s 99.1

101.6

86.1 144.9 143.5

Stage 1

Name    

 

     
  Length (+adapter) m 20.52 20.52 24.66 24.66 24.66
Diameter m 3.35 3.35 3.35 3.35 3.35
Liftoff weight t 149.50 148.50 179.50 182.30 182.30
Propellant weight t 140.00 138.96 169.01 171.78 171.78
Engines   YF-21  (4) YF-21A  (4) YF-21B/21C  (4) YF-21B/21C (4) YF-21C (4)
Propellant   UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4
Total thrust (s.l.) kN 2,784.6 2,804 2,961.6 2,961.6 2,961.6
Specific impulse (s.l.) N*s/kg 2539 2556 2556 2556 2556
Burn time s 127.6 126.7 145.9 148 148
Total impulse (vac) MN*s 383.0 382.6 465.4 473.0 473.0

Booster

Name         4 LRB 2 LRB
  Length m       15.33 15.33
Diameter m 2.25 2.25
Liftoff weight t 163.78 81.89
Propellant weight t 150.98 75.49
Engines   YF-25 YF-25
Propellant   UDMH/N2O4 UDMH/N2O4
Total thrust (s.l.) kN 2,961.6 1,480.8
Specific impulse (s.l.) N*s/kg 2556 2556
Burn time s 130 130
Total impulse (vac) MN*s 414.3 207.1