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Showing 1 to 3 of 3 for “"nrho"”.
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Generating Exploration Mission-3 Trajectories to a 9:2 NRHO Using Machine Learning
… a mission to a Near Rectilinear Halo Orbit (NRHO) with a 9:2 synodic frequency. Current launch availability knowledge under NASA’s Orion Orbit Performance Team is established by altering optimization variables associated to given reference launch epochs. This current method can be an abstract …
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Safety-Driven, Time-Sensitive Approach Strategies for Rendezvous with the Lunar Gateway
… Gateway resides in Near Rectilinear Halo Orbit (NRHO) around the Earth-Moon L2 point in cislunar space. The classical RPOD understandings through models such as the Clohessy–Wiltshire equations break down in a three-body dynamics-based orbit like the NRHO, requiring proven approach strategies …
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Multi-Objective Exploration of Refueling Architecture for Sustainable Crewed and Cargo Space Transportation
… of high Isp with Lox/LH2, the benefits with NRHO refueling for acceptable ΔV requirement, and positive and negative effects of reusability in mass and mission time. Furthermore, the study indicates that the number of required refueling events is more sensitive to payload and refueler capacity …