Knowledge base · Propulsion & launch
Orbital Refueling
Refueling in orbit could make a smaller, more affordable vehicle capable of deep-space missions.
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Open questions
- ?What propellant transfer methods are proven versus still experimental?
- ?How much does orbital refueling actually change the affordable-vehicle-size equation?
- ?What are the biggest safety considerations in transferring propellant in microgravity?
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