What propellants are utilized by the nine massive BE-4 engines powering New Glenn's first stage?
Answer
Liquid oxygen and liquid methane (methalox)
The first stage of the New Glenn rocket is propelled by nine BE-4 engines, which operate using a combination of liquid oxygen and liquid methane, commonly referred to as methalox. This selection of propellant is considered advantageous in modern rocketry for several reasons, including improvements in manufacturing processes, easier handling compared to some hypergolic or cryogenic alternatives, and beneficial characteristics for eventual in-space operations. Furthermore, the BE-4 engine system is highlighted as a crucial domestic powerhouse for the United States launch sector.
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