CALT / CASC

CZ -2CS/SD CZ -2CS-4/SMA CZ -2D CZ-2D-4 (1) CZ -2D-4 (2)

Overall
Vehicle

Operational from 01.09.1997 06.09.2008 09.08.1992 03.11.2003 05.07.2005
  to 11.06.1999 09.07.2018 20.10.1996 05.04.2016 15.10.2023
Orbital flights   7 3 3 (FSW)               4 (FSW) 74 +1
Payload weight t Iridium 1.46 SSO 2.10 LEO 3.00 LEO 3.50 SSO 1.15
Gross liftoff weight t 212.10 213.85 228.30 228.70 226.60
Gross propellant weight t 197.41 198.12 210.47 210.39 210.36
Total length m 38.83 38.83 39.29 39.29 40.77
Max. diameter (span) m 3.35 3.35 3.35/ 6.15 3.35/ 6.15 6.15
Total liftoff thrust (s.l.) kN 2,962 2,962 2,962 2,962 2,962
Total impulse (vac) MN*s 550.3 557.0 585.3 587.0 587.0

Fairing

Total length m 8.37 8.37 5.84/6.34 5.84/6.34 7.82
Diameter m 3.35 3.35 3.35 (2.20) 3.35 (2.20) 3.35
Total weight t 0.80 0.80 0.50 0.50 0.75

Stage 3

Name   Smart Dispenser SM      (YZ-1S)

 

Length m 0.85 0.85      
Diameter m 2.70 (0.54) 2.70 (0.54)
Liftoff weight t 0.146 0.146
Propellant weight t 0.138 0.138
Engines (Chambers)   SpaB-54 (=FG-47) SpaB-54 (=FG-47)
Propellant   HTPB HTPB
Total thrust (vac) kN 10.8 10.8
Specific impulse (vac) N*s/kg 2824 2824
Burn time s 36 36
Total impulse (vac) MN*s 0.39 0.39
Stage 2

Name

  L-54 L-54 L-36 L-36 L-36

 

Length (+adapter) m 9.94 9.94 8.29 8.29 8.29
Diameter m 3.35 3.35 3.35 3.35 3.35
Liftoff weight t 56.60 57.50 37.60 37.50 37.50
Propellant weight t 54.17 54.68 35.57 35.49 35.49
Engines   YF-24B YF-24D (l.n.) YF-24B YF-24D (l.n.) YF-24D (l.n.)
Propellant   UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4
Total thrust (vac) kN 742.4 (+46.1) 784.5 (+46.1) 742.4 (+46.1) 784.5 (+46.1) 784.5 (+46.1)
Specific impulse (vac) N*s/kg 2922 2922 2922 2922 2922
Burning time s 179.8 (489) 177 (490) 131 (137) 126 (137) 126 (137)
Total impulse (vac) MN*s 156.0 162.0 103.6 105.3 105.3

Stage 1

Name   L-145 L-145 L-176 L-176 L-176
  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 153.1 153.3 187.2 187.2 187.2
Propellant weight t 143.1 143.3 174.9 174.9 174.9
Engines   YF-21B (4) YF-21C (4) YF-21B (4) YF-21C (4) YF-21C (4)
Propellant   UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4 UDMH/N2O4
Total thrust (s.l.) kN 2,961.6 2,961.6 2,961.6 2,961.6 2,961.6
Specific impulse (s.l.) N*s/kg 2557 2557 2557 2557 2557
Burn time s 123.5 123.7 151 151 151
Total impulse (vac) MN*s 393.9 394.6 481.7 481.7 481.7