Browsing by Author "Long, Archie David"
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Item A real time spacecraft guidance formulation based upon optimization theory(1972) Long, Archie David; Dawkins, George S.; Rhodes, Benjamin T., Jr.; Lewallen, Jay M.This thesis is concerned with the development of a spacecraft guidance which will solve the problem associated with the optimum transfer of a spacecraft between two states. The theoretical development of an existing guidance formulation is shown and this formulation is extended to include a more general mission capability. Specifically, the guidance formulation presented is extended to an operational capability for low-thrust maneuvers. Numerical results are presented which compare the guidance solution and a near optimal solution to the same low-thrust transfer problem. These results indicate that the guidance procedure can be extended to an operational capability for low-thrust maneuvers with performance (propellant expenditure) comparable to an optimum transfer.