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=== New Glenn ===
{{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
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 [[LH2/LOX]] engines.<ref>{{Cite news |date=29 March 2018 |title=Blue Origin switches engines for New Glenn second stage |url=http://spacenews.com/blue-origin-switches-engines-for-new-glenn-second-stage/ |url-status=live |archive-url=https://archive.today/20180329194940/http://spacenews.com/blue-origin-switches-engines-for-new-glenn-second-stage/ |archive-date=29 March 2018 |access-date=28 April 2018 |work=SpaceNews.com}}</ref> The second stage will be [[expendable launch vehicle|expendable]].<ref name=nsf20160912/>
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