![]() ![]() The recently concluded Orbital Express (OE) mission included a fluid transfer demonstration that operated the hardware and control logic in space, bringing the Technology Readiness Level to a solid TRL 7 (demonstration of a system prototype in an operational environment). Propellant resupply of orbiting spacecraft is no longer in the realm of high risk development. Rotenberger, Scott SooHoo, David Abraham, Gabriel Orbital Express fluid transfer demonstration system The transfers surveyed include short 3-6 day direct transfers, longer 3-4 month low energy transfers, and variants that include Earth phasing orbits and/or lunar flybys. ![]() This strategy is used to survey the performance of numerous transfers between varying Earth parking orbits and varying low lunar target orbits. Peterson, AndrewĪ simple strategy is identified to generate ballistic transfers between the Earth and Moon, i.e., transfers that perform two maneuvers: a trans-lunar injection maneuver to depart the Earth and a Lunar Orbit Insertion maneuver to insert into orbit at the Moon. A Survey of Ballistic Transfers to Low Lunar Orbit ![]()
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