Ivan Galuppi
Modeling and Design of an Orbital Simulator and of Guidance Algorithms for VLEO maneuvers.
Rel. Elisa Capello. Politecnico di Torino, Corso di laurea magistrale in Ingegneria Aerospaziale, 2025
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Abstract
With the ever growing interest in space operations more and more studies are considering Very Low Earth Orbits (VLEO) for specific mission; due to the lower altitude than traditional ones these types of orbits have different benefits and drawbacks. The advantages of this orbits are reduced communication latency, improved link budgets and enhanced ground resolution for Earth Observation missions. Since the launcher has to reach lower altitudes the launch costs are reduced and, due to new laws for end-of-life disposals, the thicker atmosphere helps in de-orbiting spacecrafts naturally in reduced time. The lower altitude also has its challenges, i.e. the gravitational anomalies are more severe, the aerodynamic drag is orders of magnitude bigger than at higher orbits and the interactions with the magnetosphere are more pronounced.
The objective of this thesis is to enable feasibility analysis of missions in VLEO, a 6 degree-of-freedom simulator is designed in MATLAB/Simulink and incorporates the models of the primary disturbances affecting satellite dynamics in an Earth-Centered Inertial (ECI) frame
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