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Low-energy Earth–Moon transfers via Theory of Functional Connections and homotopy
Numerous missions leverage the weak stability boundary in the Earth–Moon–Sun system to achieve a safe and cost-effective access to the lunar...
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On optimal three-impulse Earth–Moon transfers in a four-body model
Within the emerging age of lunar exploration, optimizing transfer trajectories is a fundamental measure toward achieving more economical and...
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Optimization of bi-impulsive Earth-Moon transfers using periodic orbits
Low-energy bi-impulsive Earth-Moon transfers are investigated by using periodic orbits. Two Earth-Moon transfer design strategies in the CR3BP are...
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Dynamics around the Earth–Moon triangular points in the Hill restricted 4-body problem
This paper investigates the motion of a small particle moving near the triangular points of the Earth–Moon system. The dynamics are modeled in the...
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Two-impulse transfer to multi-revolution halo orbits in the Earth–Moon elliptic restricted three body problem framework
For the design of transfer trajectories in the Earth–Moon system, the manifolds theory is popularly used in the existing literature. Because the...
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Minimum-Thrust Transfers to the Moon
AbstractThis paper considers the problem of optimizing low-thrust transfers to lunar orbits, to the libration points of the Earth–Moon system, and to...
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Transfers from the Earth to \(L_2\) Halo orbits in the Earth–Moon bicircular problem
This paper deals with direct transfers from the Earth to Halo orbits related to the translunar point. The gravitational influence of the Sun as a...
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Thrust continuation of time-optimal orbital transfers with soft terminal conditions
Time-optimal orbital transfers with soft terminal conditions are studied in this work. First, a two-layer thrust continuation method is devised. The...
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Exploring more solutions for low-energy transfers to lunar distant retrograde orbits
This study aims to explore more solutions for low-energy transfers to lunar distant retrograde orbits (DROs) from the vicinity of the Earth. Millions...
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Optimal geometry for lunar swing-by maneuvers aided by solar sails in the restricted four-body problem
As the geometry of the swing-by maneuver greatly influences the outcome of the gain of energy and a possible escape trajectory, a study on the...
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Design and analysis of quasi-halo orbits and optimal transfers from the Earth under different Sun–Earth frameworks using differential evolution
In general, the initial designs of periodic orbits around the Lagrangian points and transfers to them from the Earth are generated under the Circular...
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Satellite transfers between Keplerian orbits
We introduce a new technique for satellite transfers between Keplerian orbits. This new technique is based on controlling the constants of motion of...
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The transfers from lunar DROs to Earth orbits via optimization in the four body problem
The distant retrograde orbits (DROs) can serve as the parking orbits for a long-term cis-lunar space station. This paper gives a comprehensive study...
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Order-chaos-order and invariant manifolds in the bounded planar Earth–Moon system
In this work, we investigate the Earth–Moon system, as modeled by the planar circular restricted three-body problem, and relate its dynamical...
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Families of transfers from the Moon to Distant Retrograde Orbits in cislunar space
This paper presents different families of transfers from Low Lunar Orbit to Distant Retrograde Orbits in the Earth-Moon system and analyzes their...
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Invariant manifolds near \(L_1\) and \(L_2\) in the quasi-bicircular problem
The quasi-bicircular problem (QBCP) is a periodic time-dependent perturbation of the Earth–Moon restricted three-body problem (RTBP) that accounts...
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Celestial mechanics: new discoveries and challenges for space exploration
This special issue entitled “Celestial Mechanics: New Discoveries and Challenges for Space Exploration” presents a series of 27 contributions. Some...
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Families of Earth–Moon trajectories with applications to transfers towards Sun–Earth libration point orbits
We studied Earth–Moon transfer trajectories in the circular restricted three-body problem (CRTBP) from the viewpoint of families and considered their...
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Global analysis of direct transfers from Lunar orbits to Sun-Earth libration point regimes
In this paper we look forward to obtain a global picture of simple transfer opportunities from Lunar to Sun-Earth libration orbits, useful for a...
