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=== New Glenn launch vehicle ===
{{main|New Glenn}}
The engine is to be used on the Blue Origin large [[orbital spaceflight|orbital]] [[launch vehicle]] [[New Glenn]], a {{convert|23|ft|disp=flip|adj=on|sp=us}}-diameter [[multistage rocket|two-stage]] [[orbital spaceflight|orbital]] [[launch vehicle]] with an optional third stage and a [[Reusable launch system|reusable]] first stage. The [[flight testing|first flight and orbital test]] is planned for no earlier than 2021,<ref name=boyle20181010/> although the company had earlier expected the BE-4 might be tested on a rocket flight as early as 2020.<ref name=nsf20160912/>
The first stage will be powered by seven BE-4 engines and will be [[reusable launch vehicle|reusable]], landing [[VTVL|vertically]]. The second stage of New Glenn will share the same diameter and use two [[BE-3]] vacuum-optimized [[hydrolox]] engines.<ref>{{Cite news|url=http://spacenews.com/blue-origin-switches-engines-for-new-glenn-second-stage/|title=Blue Origin switches engines for New Glenn second stage - SpaceNews.com|date=2018-03-29|work=SpaceNews.com|access-date=2018-04-28|language=en-US}}</ref> The second stage will be [[expendable launch vehicle|expendable]].<ref name=nsf20160912/>
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