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General features CZ-5 CZ-5B
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Core stages.............2 1
Strap-on boosters.......4 4
Length..................56.97 m 53.70 m
Diameter................5 m 5 m
Mass, gross.............869 t 837.5 t
Mass, empty.............N/A N/A
Lift-off thrust.........10,572 kN 10,572 kN
Payload to GTO..........14 t
Payload to LEO........................22 t
First-stage
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Length..................31.02 m
Diameter................5.00 m
Mass, gross.............175.8 t
Mass, empty.............17.8 t
Mass, propellants.......158 t
Engine..................2 x YF-77
Thrust..................1,400 kN (sea-level)
Isp.....................N/A
Burn time...............N/A
Propellants.............LOX / LH2
Strap-on boosters
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Length..................26.28 m
Diameter................3.25 m
Mass, gross.............147 t
Mass, empty.............12 t
Mass, propellants.......135 t
Engine..................2 x YF-100
Thrust..................2,680 kN (sea-level)
Isp.....................N/A
Burn time...............N/A
Propellants.............Lox / Kerosene
Second-stage
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Length..................12.00 m
Diameter................5.00 m
Mass, gross.............26 t
Mass, empty.............3.1 t
Mass, propellants.......N/A
Engine..................2 x YF-75D
Thrust..................156 kN (vacuum)
Isp.....................N/A
Burn time...............N/A
Propellants.............LOX / LH2
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