TRAJECTORY DESIGN FOR BOUNDED MOTION NEAR UNCERTAIN BINARY SYSTEMS COMPRISED OF SMALL IRREGULAR BODIES EXPLOITING SLIDING CONTROL MODES

摘要

To investigate the behavior of a spacecraft near a pair of irregular bodies, consider a three body configuration (one massless). Two massive bodies, P_1 and P_2, form the primary system; each primary is initially modeled as an ellipsoid. Concepts and tools similar to those applied in the Circular Restricted Three-Body Problem (CRTBP) are exploited to construct bounded trajectories for a third body in such a synchronous system. Then, to accommodate model uncertainties and other non-gravitational perturbations, a design strategy to maintain a spacecraft near a reference path is proposed.