Date of Award

3-2024

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Aeronautics and Astronautics

First Advisor

David H. Curtis, PhD

Abstract

As the prevalence of autonomous space systems rise, there is an urgent demand for robust and precise safety analysis. The future of RPO necessitates coordination of satellites in a dynamic and congested space environment while avoiding collisions. Passive safety in RPO refers to the implementation of strategies that minimize the collision risk in the event of orbital or control deviations. This multifaceted problem includes maintaining KOZ, utilizing predictive modeling to anticipate collision scenarios, and designing spacecraft with robust GNC systems allowing for timely course corrections. The current literature’s focus has been on the separation distance between spacecraft as a primary safety consideration. However, a more comprehensive approach is required that considers thrust malfunctions paired with RTA, a monitoring algorithm that evaluates the safety implications of primary controller commands. RTA then allows the command to proceed or triggering the implementation of a backup controller. This paper conducts a comprehensive survey of the literature on passive safety in RPO and presents a RTA solution addressing a wider range of safety violation issues.

AFIT Designator

AFIT-ENY-MS-24-M-199

Comments

A 12-month embargo was observed for posting this work on AFIT Scholar.

Distribution Statement A, Approved for Public Release. PA case number on file.

Related organizations and units for this Masters thesis:

  • Center for Space Research and Assurance (CSRA) at AFIT
  • Space Vehicles Directorate, Air Force Research Laboratory (AFRL/RV)

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