Direct Phasing Maneuver in Cis-Lunar Space: Sensitivity and Robustness analysis

The Moon is selected as the next step of space exploration by industries and agencies around the world. To successfully accomplish this goal future missions are already planned to place one or more stable vehicles orbiting the Moon, mostly located on Halo orbits, which implies a continuous flux of spacecrafts to refurbish the orbiting space stations. The paper is focused on the phasing manoeuvre, in other words, the sequence of actions that must be taken to recover orbital phase and successfully perform proximity operations. In particular a direct phasing manoeuvre strategy is briefly presented, under the hypothesis of the Circular Restricted Three-Body Problem, the innovative contribution of the paper lays in the evaluation of the performances of the proposed strategy in presence of errors in the state of the spacecraft and perturbations of the model such as Solar Radiation Pressure, Moon's gravity harmonics or the presence of the Sun. The results will be shown in terms of error on the final state