Flyby error analysis based on contour plots for the Cassini tour

Abstract

The maneuver cancellation analysis consists of cost contour plots employed by the Cassini maneuver team. The plots are two-dimensional linear representations of a larger sixdimensional solution to a multi-maneuver, multi-encounter mission at Saturn. By using contours plotted with B•R and B•T components, it is possible to view the effects ΔV on for various encounter positions in the B-plane. The plot is used in operations to help determine if the Approach Maneuver (ensuing encounter minus three days) and/or the Cleanup Maneuver (ensuing encounter plus three days) can be cancelled and also is a linear check of an integrated solution.