Rocket Engine Manufacturers

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Liquid rocket engine and solid rocket motor makers, and in-space propulsion companies.

More on webcentive: Rockets | Rocket Companies

Each site has quick lookups: who owns it (whois), its history (Wayback Machine), a safety check, and one-tap questions to AI helpers. Grok asks you to tap Send first.
Links last checked Oct 25, 2026.

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U.S. engine makers
agilespaceindustries.com - Agile Space Industries (thrusters and engines), Durango, Colorado X: @agile_space whois history safety search AI Mode Grok Bing AI
blueorigin.com/engines - Blue Origin engines (BE-4 for New Glenn and Vulcan, BE-3). Site blocks automated checks. X: @blueorigin whois history safety search AI Mode Grok Bing AI
firehawkdefense.com - Firehawk Aerospace (hybrid rocket engines, 3D-printed fuel), Texas X: @FirehawkAero whois history safety search AI Mode Grok Bing AI
l3harris.com - L3Harris (Aerojet Rocketdyne: RS-25, RL10, AR1), Melbourne, Florida X: @L3HarrisTech whois history safety search AI Mode Grok Bing AI
moog.com - Moog (space propulsion and thrusters), East Aurora, New York X: @Moog_Inc whois history safety search AI Mode Grok Bing AI
northropgrumman.com/what-we-do/space - Northrop Grumman space systems, including the solid rocket motors and boosters it builds for launch vehicles and missiles. X: @northropgrumman whois history safety search AI Mode Grok Bing AI
spacex.com/vehicles - SpaceX Starship page. SpaceX builds its own Raptor and Merlin engines in-house. X: @SpaceX whois history safety search AI Mode Grok Bing AI
ursamajor.com - Ursa Major (Hadley, Draper, solid rocket motors), Berthoud, Colorado X: @ursamajortech whois history safety search AI Mode Grok Bing AI
vastspace.com - Vast (acquired Launcher and its E-2 engine work in 2023), Long Beach, California X: @vast whois history safety search AI Mode Grok Bing AI
x-bow.com - X-Bow Systems (solid rocket motors), Austin, Texas. Site blocks automated checks. X: @XBowSystems whois history safety search AI Mode Grok Bing AI
European engine makers
ariane.group - ArianeGroup (Vulcain 2.1, Vinci, Prometheus), Airbus and Safran joint venture X: @ArianeGroup whois history safety search AI Mode Grok Bing AI
avio.com/propulsion - Avio (P120C solid motors, M10 engine), Italy X: @Avio_Group whois history safety search AI Mode Grok Bing AI
nammo.com - Nammo (space propulsion and motors), Norway; owned by the Norwegian state and Patria (Finland) X: none found whois history safety search AI Mode Grok Bing AI
pangeapropulsion.com - Pangea Aerospace (aerospike engines), Barcelona, Spain X: none found whois history safety search AI Mode Grok Bing AI
safran-group.com - Safran (space propulsion, ArianeGroup co-owner), France. Site blocks automated checks. X: @SAFRAN whois history safety search AI Mode Grok Bing AI
Asian engine makers
ihi.co.jp - IHI (rocket engines and solid motors, IHI Aerospace), Japan X: none found whois history safety search AI Mode Grok Bing AI
mhi.com - Mitsubishi Heavy Industries (LE-9 engine, H3 rocket), Japan X: @MHI_Group whois history safety search AI Mode Grok Bing AI
In-space propulsion
benchmarkspacesystems.com - Benchmark Space Systems (in-space propulsion), Vermont X: @BenchmarkSpace whois history safety search AI Mode Grok Bing AI
busek.com - Busek (electric propulsion), Natick, Massachusetts X: @BusekPropulsion whois history safety search AI Mode Grok Bing AI
dawnaerospace.com - Dawn Aerospace (green thrusters, Aurora spaceplane), New Zealand and Netherlands X: @DawnAerospace whois history safety search AI Mode Grok Bing AI
exotrail.com - Exotrail (electric propulsion and space tugs), France X: @exotrail whois history safety search AI Mode Grok Bing AI


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