Lunar Flyby

Author: Tianjiang Shuo

Website: https://cislunarspace.cn

Definition

A close approach to the Moon where the spacecraft passes through the lunar gravity field without being captured. By controlling the perilune altitude and approach geometry, the trajectory's energy and direction can be significantly altered. High-altitude flybys require less energy but produce smaller changes; low-altitude flybys produce larger changes but require precise control.

Application Value

This concept is fundamental to cislunar orbital mechanics and mission analysis, providing essential theoretical support for trajectory design and operational planning.

  • Retrograde Motion
  • Absolute Phase Bias
  • Relative Attitude Quaternion
  • Radial-Tangential-Normal Coordinate System, RTN

References

  • Oshima et al. - 2017
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Contributors: ouyangjiahong, Ou Yang Jiahong