Direct Transfer Trajectory
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
A flight path that directly connects a near rectilinear halo orbit to a low lunar orbit through two impulsive maneuvers: the first at the NRHO departure point to enter the transfer trajectory, and the second at the trajectory perilune to achieve lunar capture. Unlike multi-segment transfers, a direct transfer consists of a single arc with shorter flight time, suitable for crewed lunar exploration missions.
Application Value
This term在cislunar space missions中has important application value. In orbit design, it can be used foroptimizing transfer trajectories, reducing mission fuel consumption. In attitude control and dynamics analysis, it helps understandthe motion characteristics of spacecraft in complex gravitational fields, providing theoretical support for mission planning. In navigation and orbit determination, methods based on this termcan improve orbit prediction accuracy, supporting the development of autonomous navigation algorithms.
Related Concepts
- DRO-to-Earth-Orbit Transfer
- Maximum Excursion Distance
- Short-Path Transfer Orbit
- Conic Orbit
References
- Lu et al., 2021