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Since the founding of SpaceX in 2002, the company has developed four families of rocket engines — Merlin, Kestrel, Draco and SuperDraco — and is currently developing another rocket engine: Raptor. ==History== In the first ten years of SpaceX, the company has developed a variety of liquid-propellant rocket engines, with at least one more of that type under development in late 2012. , each of the engines developed to date—Kestrel, Merlin 1, Draco and Super Draco—have been developed for initial use in the SpaceX Falcon family of launch vehicles—Falcon 1, Falcon 9, and Falcon Heavy—or for the Dragon capsule. Each main engine to date has been Kerosene-based, using RP-1 as the fuel with liquid oxygen (LOX) as the oxidizer, while the RCS control thruster engines have used storable hypergolic propellants. In November 2012, at a meeting of the Royal Aeronautical Society in London, United Kingdom, SpaceX announced that they plan to develop methane-based engines for their future rockets. These engines will use staged cycle combustion, for higher efficiency similar to the system used on the former Soviet Union's NK-33 engine.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「SpaceX rocket engine family」の詳細全文を読む スポンサード リンク
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