Near Rectilinear Halo Orbits (NRHOs), a subset of the L1 and L2 halo orbit families, are
strong candidates for a future inhabited facility in cis-lunar space. Characteristics of the …

Incorporating quasi-periodic orbits into the preliminary design process offers a wide range of
options to meet mission constraints and address the challenges in a complex trade space. In …

In the near future, several space applications in the Earth-Moon system may require a
spacecraft to hold a stable motion, but the transfer trajectory infrastructure to access such …

Future long-term lunar missions, such as cis-lunar space stations and communication/
navigation constellations, have been proposed by different space agencies. For such long …

A critical first step towards achieving the goal of a far-reaching human presence in space
within the 21st century is the creation of a long-term crewed habitat in cislunar space, well …

The stable near rectilinear halo orbits (NRHOs) and distant retrograde orbits (DROs) are
both considered as potential parking orbits for cis-lunar stations. Transfer orbits between …

As demonstrated by ongoing concept designs and the recent ARTEMIS mission, there is,
currently, significant interest in exploiting three-body dynamics in the design of trajectories …

The orbital dynamics in the three-body system is a classical problem in the field of
astrodynamics. It has rich theoretical and engineering significance, and have played an …

Wide-ranging transfer capabilities are necessary to support the development of cislunar
space. But, low-thrust transfers between stable periodic orbits are challenging in this regime …

T establishment of a permanent human presence in cislunar space is a near term goal of
both government space agencies and private companies. This objective will enable the …