launch services

Casc Long March 3b

Missions → FY-4B (Operational) , FY-4A (Operational)

Long March 3B is a boosted Long March 3A-derived heavy GTO launch vehicle.^[1] It adds four liquid boosters to the Long March 3A architecture; the Long March 3B/E enhanced version uses enlarged core-stage and booster structures.^[1] Published GTO capacity is 5,100 kg for Long March 3B and 5,500 kg for Long March 3B/E.^[1] The vehicle remained active as of 2026-06-16, with successful Long March-3B launches in 2025, but buyer evaluation should also account for the Shijian-32 Long March-3B launch failure on 2026-01-17.^[2]^[3]

Supply chain position

launched FY-4B

launched FY-4A

Sources

[1]LM-3B, CGWICoperator datasheet-2026-06-16
[2]China successfully launches new satellite, Xinhuathird party2025-10-262026-06-16
[3]China's Shijian-32 satellite launch mission fails, Xinhuathird party2026-01-172026-06-16
[4]Launch Record, CGWICoperator datasheet-2026-06-16

Cite https://eo-atlas.org/launch_services/casc-long-march-3b Markdown twin → Field definitions → Suggest a correction →

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Plain text

Casc Long March 3b. EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/launch_services/casc-long-march-3b (CC BY 4.0)

BibTeX

@misc{eoatlas:launch_services:casc-long-march-3b,
  title = {Casc Long March 3b},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/launch_services/casc-long-march-3b}
}