ChangZheng 12B
ChangZheng 12B
Space Launch Systems
Basic Information
Name
ChangZheng 12B
Designation
ChangZheng 12B
Alternate Designation
CZ-12B, Long March 12B
Equipment Type
Space Launch Systems
Manufacturer
CALT
Date of Introduction
2026
Description
The ChangZheng 12B, also known as the CZ-12B or Long March 12B (LM-12B) in the West, is a larger variant of the Long March 12 rocket designed to carry payloads of 20 tons onto Low Earth Orbit (LEO) or 12 tons payloads into Sun Synchronous Orbits (SSO) at 700 kilometers of altitude. The CZ-12B’s first stage is reusable and is propelled by nine liquid oxygen-kerosene-fueled YF-102R engines and the second stage uses a single YF-102V engine. The rocket has an overall height of 72 meters and 4.37 meters of diameter. The first launch was carried out on June 1, 2026.
Overview (Deagel)
Group
Space Launch Systems
Status
Active
Also Known As
CZ-12B, Long March 12B
Origin
China
Contractor
CALT
Initial Operational Capability (IOC)
June 1, 2026
First Flight
June 1, 2026
Total Production
1
Specifications (Deagel)
Number of Stages
2
Dimensions — Height
72 meter
Dimensions — Rocket Diameter
4.4 meter
Mass — Max Lift-off Thrust
7,515 kN
Mass — Max Lift-off Weight
437 ton
Mass — Payload to LEO
20,000 kilogram
Mass — Payload to SSO
12,000 kilogram
Variants
Variant 1
ChangZheng 12
Variant 2
ChangZheng 12B
Details
Country of Origin
China
Sources
deagel.com: https://www.deagel.com/x/x/a004389
Classification
Domain
Air & Air Defense
Equipment Status
Active
Dimensions
Length
72 m
Width
4.37 m
Height
72 m
Weight
437000 kg
Operators (1)
China
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