Feb 26, 2016 · Blue Origin's BE-4 EngineThe relative sizes of the hardware in the pictures is a bit off from the 3D models. Looks like the main turbopump shown on the floor and in the test …

Apr 19, 2024 · Blue Origin's BE-4 EnginePlugging in the above engine timeframes I don't see launching right now speeding up anything in the long run, just a slightly earlier USSF-106 …

Sep 27, 2018 · BE-4 Reverse EngineeredWith the available data on the BE-4 sea level engine, I have reverse engineered some other likely performance numbers. The performance numbers …

Jan 9, 2024 · How is this possible? The BE-4 is the engine of a Operational rocket, that just make a CisLunar mission, a complete success, is a perfect rocket engine at the moment. Complete …

Nov 20, 2025 · Blue Origin's BE-4 EngineI think there's two different things here. One is the upgrades to the first version of the vehicle, the 7x2 version. That is primarily what I'm referring …

Mar 13, 2018 · New test video of Blue’s 550K lbf thrust, ox-rich staged combustion, LNG-fueled BE-4 engine. The test is a mixture ratio sweep at 65% power level and 114 seconds in duration.

Oct 23, 2025 · Blue Origin's BE-4 EngineBruno has posted tweets like this one last year in which he alludes to 20+ Vulcans in production. That tweet in particular is almost a year and a half …

Oct 29, 2024 · Blue Origin's BE-4 EngineThe full Vulcan manifest for 2024 is a total of four flights. This latest delivery is the eighth BE-4 for ULA. The full Vulcan manifest for 2025 is about 11 …

Aug 13, 2025 · Even if you ran each BE-4 engine at 5% more power, which again I don't think they did, that's only 55k lbf more thrust. So even with that hypothetical, you're looking at 95% …

Jun 7, 2022 · Blue Origin's BE-4 EngineIt's kind of hard to tell as the XEEx stand was undergoing a flight engine readiness review a couple weeks ago and involved ULA personnel. But when …