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Full-Text Articles in Engineering
Cislunar Navigation Techniques And Navigation Performance Optimization, Quinn P. Moon
Cislunar Navigation Techniques And Navigation Performance Optimization, Quinn P. Moon
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Nova-C is a lunar lander developed by the private company Intuitive Machines to deliver commercial payloads to the Moon. The IM-1 mission set for 2023 will launch and land the Nova-C near the Moon's south pole. In this research, various navigation techniques are explored to determine the lander's position and velocity during key segments. This process is studied for key mission events including trajectory correction maneuvers (TCMs), lunar orbit insertion (LOI), and descent orbit insertion (DOI). Each mission segment, referred to as an Orbit Determination Segment (OD), is analyzed with three different navigation techniques: Monte Carlo Analysis, Linear Covariance Analysis, …
Guidance And Navigation Linear Covariance Analysis For Lunar Powered Descent, Travis J. Moesser
Guidance And Navigation Linear Covariance Analysis For Lunar Powered Descent, Travis J. Moesser
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A linear covariance analysis is conducted to assess closed-loop guidance, navigation, and control system (GN&C) performance of the Altair vehicle during lunar powered descent. Guidance algorithms designed for lunar landing are presented and incorporated into the closed-loop covariance equations. Navigation-based event triggering is also included in the covariance formulation to trigger maneuvers and control dispersions. Several navigation and guidance trade studies are presented demonstrating the influence of triggering and guidance and study parameters on the vehicle GN&C performance.