BE-4
Blue Origin BE-4 is a liquefied-natural-gas/liquid-oxygen, oxygen-rich staged-combustion liquid rocket engine developed for the first stages of ULA Vulcan and Blue Origin New Glenn. ULA identifies two BE-4 methane-fueled engines on the Vulcan VC2S booster that flew on the 2024-01-08 Cert-1 mission, establishing the exact first-flight boundary for this engine model.
Identity
- Aliases
- BE-4Blue Origin BE-4BE-4 oxygen-rich staged-combustion engine
- Domains
- spaceflight
- Identity Level
- model
- Kind
- liquid-rocket-engine
- Name
- BE-4
- Status
- active
Details
- Description
- Blue Origin BE-4 is a liquefied-natural-gas/liquid-oxygen, oxygen-rich staged-combustion liquid rocket engine developed for the first stages of ULA Vulcan and Blue Origin New Glenn. ULA identifies two BE-4 methane-fueled engines on the Vulcan VC2S booster that flew on the 2024-01-08 Cert-1 mission, establishing the exact first-flight boundary for this engine model.
- Developers
- First Flight Date
- 2024-01-08
- Manufacturers
- Propellants
- liquefied natural gasliquid oxygen
- Rocket Specs
- Cycle
- oxygen-rich staged combustion
- Sea Level Thrust Kn
- 2,846
Links
- Official Url
- https://www.blueorigin.com/engines/be-4
Assets & Meta
- Creation Time
- July 29, 2026 at 08:23:44 UTC
- Updated Time
- August 22, 2026 at 07:18:17 UTC
Other
- Sources
- Accessed Date
- 2026-07-29
- Publisher
- Blue Origin
- Title
- Blue Origin Engines
- Accessed Date
- 2026-07-29
- Note
- Supports the legacy vehicle installation and the narrow canonical identity used during migration.
- Publisher
- Official vehicle or program source
- Title
- New Glenn official vehicle reference
- Accessed Date
- 2026-07-29
- Publisher
- Blue Origin
- Title
- Blue Origin's New Glenn Reaches Orbit
- Accessed Date
- 2026-07-29
- Note
- Supports the legacy vehicle installation and the narrow canonical identity used during migration.
- Publisher
- Official vehicle or program source
- Title
- Vulcan Centaur official vehicle reference
- Accessed Date
- 2026-08-22
- Note
- ULA identifies two BE-4 methane-fueled engines on the Vulcan VC2S booster and dates the inaugural Cert-1 flight to 2024-01-08, establishing the exact first-flight boundary for BE-4.
- Publisher
- United Launch Alliance
- Title
- Vulcan Cert-1: Payloads mounted atop rocket for launch