What property makes liquid hydrogen the preferred propellant choice for high-performance upper stages?

Answer

Extremely high specific impulse

Liquid hydrogen is celebrated in rocketry because it provides an extremely high specific impulse, which is crucial for maximizing rocket performance, especially in upper stages and core stages of heavy-lift vehicles.

What property makes liquid hydrogen the preferred propellant choice for high-performance upper stages?

#Videos

Plug Power Just Landed NASA — And It Could Change ... - YouTube

NASAhydrogenSourcefuelspace program