B20
Design and control of solar radiation pressure assisted missions in the Sun-Earth system
Stefania Soldini (JAXA)
This article investigates the use of solar radiation pressure for the design and control of trajectories in the restricted three-body problem of the Sun-Earth system. A modern approach that has arisen in space mission design is the use of the invariant manifold theory for the design of trajectory maneuvers that exploit the natural dynamics of the solar system. A spacecraftfs natural dynamics are affected by environmental perturbations such as solar radiation pressure. Traditionally, the design of space missions requires any perturbations to be canceled out through corrective maneuvers requiring propellant and therefore the pre-storing of fuel. Invariant manifold techniques are here applied for harnessing solar radiation pressure in the design of fuel-free maneuvers from the beginning until the end of the spacecraftfs lifetime. The advantage of solar radiation pressure maneuvers is that the spacecraft can have an unlimited source of gpropellanth (the Sunfs radiation) consequently extending the spacecraftfs gli h and reducing the overall missions cost associated with the fuel budget. The size of the required reflective deployable area and the spacecraft pointing accuracy are the ultimate outcomes of this work. Along with the design of the reflective area, the definition of a control law for the station-keeping of spacecraft in libration point orbits, a methodology to transfer between quasi-periodic orbits, and an end-of-life strategy to safely dispose of the spacecraft into a graveyard orbit around the Sun are the major important findings.