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- Title
On optimal three-impulse Earth–Moon transfers in a four-body model.
- Authors
Grossi, Guido; Buonagura, Carmine; Giordano, Carmine; Topputo, Francesco
- Abstract
Within the emerging age of lunar exploration, optimizing transfer trajectories is a fundamental measure toward achieving more economical and efficient lunar missions. This study addresses the possibility of reducing the fuel cost of two-impulse Earth–Moon transfers in a four-body model with the Earth, the Moon, and the Sun as primaries. Lawden's primer vector theory is applied within this framework to derive a set of necessary conditions for a fuel-optimal trajectory. These conditions are used to identify which trajectories from an existing database could benefit from the insertion of an additional intermediate impulse. More than 10,000 three-impulse transfers are computed with a direct numerical optimization method. These solutions contribute to enriching the database of impulsive trajectories, useful to perform trade-off analyses. While the majority of trajectories exhibit only marginal improvements, a significant breakthrough emerges for transfers featuring an initial gravity assist at the Moon. Implementing a corrective maneuver after the lunar encounter yields substantial reductions in fuel costs.
- Subjects
ORBITAL transfer (Space flight); LUNAR exploration; SPACE flight to the moon; FUEL costs; SPACE trajectories; DATABASES
- Publication
Celestial Mechanics & Dynamical Astronomy, 2024, Vol 136, Issue 3, p1
- ISSN
0923-2958
- Publication type
Article
- DOI
10.1007/s10569-024-10193-4