| China, CALT | CZ-7 | CZ-7A | CZ-8+ | CZ-8 | ||||||
|
Overall Vehicle |
Operational | from | 25.06.2016 | 16.03.2020 | 22.12.2020 | 27.02.2022 | ||||
| to | 10.05.2023 | 08.01.2023 | ||||||||
| Orbital flights | 7 | 5 | 1 | 1 | ||||||
| Payload weight | t | LEO | 24 | GTO | 6 | SSO | 4.5 | SSO | ? | |
| Gross liftoff weight | t | ~595 | 570.3 | ~ 341.8 | ~180.0 | |||||
| Gross propellant weight | t | 518.35 | 512.3 | 305.05 | 160.64 | |||||
| Total length | m | 53.1 | 60.1 | ~ 49 | ~ 47 | |||||
| Max. diameter (span) | m | |||||||||
| Total liftoff thrust (s.l.) | kN | 7,341 | 7,341 | 4,894 | 2,447.0 | |||||
| Total impulse (vac) | MN*s | 1,704.0 | 1,706.9 | 1,021.6 | 546.5 | |||||
|
Fairing |
Total length | m | 12+2 | 12 | 12 | 10 | ||||
| Diameter | m | 4.0 | 4.0 | 4.0 | 4.0 | |||||
| Total weight | t | ~2.8 | ~2.5 | ~2.5 | ~2.3 | |||||
|
Stage 3 |
Name | H-18 | ||||||||
| Length | m | ~12 (12.6) | ||||||||
| Diameter | m | 3.00 - 3.35 | ||||||||
| Liftoff weight | t | ~19.4 | ||||||||
| Propellant weight | t | 18.2 | ||||||||
| Engines | YF-75+ (2) | |||||||||
| Propellant | LH2/LOX | |||||||||
| Total thrust (vac) | kN | 156.9 | ||||||||
| Specific impulse (vac) | N*s/kg | 4295 | ||||||||
| Burn time | s | 496 | ||||||||
| Total impulse (vac) | MN*s | 77.7 | ||||||||
|
Stage 2 |
Name | L-87 (K3-2) | L-65 (K3-2 short) | H-18 | H-18 | |||||
| Length | m | ~12 | ~9 (12.1) | ~12 | ~12 | |||||
| Diameter | m | 3.35 | 3.35 | 3.00 - 3.35 | 3.00 - 3.35 | |||||
| Liftoff weight | t | ~93 | ~68 | 18.76 | 18.76 | |||||
| Propellant weight | t | ~86.45 | 62.2 | 17.54 | 17.54 | |||||
| Engines | YF-115 (4) | YF-115 (4) | YF-75 (2) | YF-75 (2) | ||||||
| Propellant | Kerosene/LOX | Kerosene/LOX | LH2/LOX | LH2/LOX | ||||||
| Total thrust (vac) | kN | 723.7 | 723.7 | 166.0 | 166.0 | |||||
| Specific impulse (vac) | N*s/kg | 3349 | 3349 | 4315 | 4315 | |||||
| Burn time | s | 400 | 288 | 455.5 | 455.5 | |||||
| Total impulse (vac) | MN*s | 289.5 | 208.3 | 75.7 | 75.7 | |||||
| Stage 1 |
Name |
L-143 (K3-1) | L-143 (K3-1) | L-143 (K3-1) | L-143 (K3-1) | |||||
| Length | m | ~27 | ~27 (24.7) | ~27 | ~27 | |||||
| Diameter | m | 3.35 | 3.35 | 3.35 | 3.35 | |||||
| Liftoff weight | t | ~157.5 | ~157.5 | ~157.5 | ~157.5 | |||||
| Propellant weight | t | 143.1 | 143.1 | 143.1 | 143.1 | |||||
| Engines | YF-100F (2) | YF-100F (2) | YF-100F (2) | YF-100F (2) | ||||||
| Propellant | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | ||||||
| Total thrust ( s.l.) | kN | 2,447.0 | 2,447.0 | 2,447.0 | 2,447.0 | |||||
| Specific impulse ( s.l.) | N*s/kg | 2942 | 2942 | 2942 | 2942 | |||||
| Burn time | s | 172 | 172 | 172 | 172 | |||||
| Total impulse (vac) | MN*s | 470.8 | 470.8 | 470.8 | 470.8 | |||||
|
Booster |
Name | 4 x L-71 (K2-1) | 4 x L-71 (K2-1) | 2 x L-71 (K2-1) | ||||||
| Length | m | 26.9 | 26.9 | 26.9 | ||||||
| Diameter | m | 2.25 | 2.25 | 2.25 | ||||||
| Liftoff weight | t | ~317 | ~317 | ~158.5 | ||||||
| Propellant weight | t | 288.8 | 288.8 | 144.4 | ||||||
| Engines | YF-100F | YF-100F | YF-100F | |||||||
| Propellant | Kerosene/LOX | Kerosene/LOX | Kerosene/LOX | |||||||
| Total thrust (s.l.) | kN | 4,894.0 | 4,894.0 | 2,447.0 | ||||||
| Specific impulse (s.l.) | N*s/kg | 2942 | 2942 | 2942 | ||||||
| Burn time | s | 173.5 | 173.5 | 173.5 | ||||||
| Total impulse (vac) | MN*s | 950.1 | 950.1 | 475.1 | ||||||