Long March 4B (CZ-4B)
CALT (China Academy of Launch Vehicle Technology)
The Long March 4B is a three-stage medium-lift launch vehicle optimized for polar and sun-synchronous orbits. Using N2O4/UDMH propellants across all three stages, it delivers 2,800 kg to SSO and 4,200 kg to LEO. First flown in 1999, CZ-4B is primarily used to deploy Earth observation and meteorological satellites.
Technical specifications
- SSO Capacity
- 2800
- LEO Capacity
- 4200
- Height
- 44.1
- Diameter
- 3.35
- Liftoff Mass
- 249200
- First Flight
- 1999
About
The Long March 4B is a three-stage medium-lift launch vehicle optimized for polar and sun-synchronous orbits. Using N2O4/UDMH propellants across all three stages, it delivers 2,800 kg to SSO and 4,200 kg to LEO. First flown in 1999, CZ-4B is primarily used to deploy Earth observation and meteorological satellites.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
