Dynamically Leveraged Automated N-Multibody (DyLAN) Trajectory Optimization

CU Aerospace (CUA) proposes further development of the Dynamically Leveraged Automated (N) Multi- body Trajectory Optimization (DyLAN) tool, which solves impulsive and low-thrust global optimization problems in multi-body dynamical regimes, and can do so in an automated fashion. NASA and commercial entities are in need of advanced methods that allow for rapid analysis of complex trajectory optimization problems, so that the most informed decisions with regard to mission design can be made at an early stage in the planning process. This includes having a solver that can intelligently search the large problem space, do so quickly, and with a great enough level of fidelity to ensure that the trajectory can be continued to a flight fidelity level. Advanced optimization tools for the LT multi-body problem do not currently exist, yet this regime is seen in numerous mission designs. During Phase I, CUA will combine recent ad- vances in global optimization, such as hybrid optimal control frameworks and intelligent heuristic global solvers, with robust and efficient local optimization and medium-high fidelity modeling of launch vehicles, spacecraft, and engine modeling to advance DyLAN to fill the aforementioned needs. Phase I efforts will include parallelism, both for personal computers and large compute clusters, to reduce run-time. Lastly, in Phase I, an automated export capability of solved solutions to NASA’s flight fidelity solver GMAT will be implemented; thereby providing an efficient global optimization capability to GMAT for multi-body, which does not currently exist. The aforementioned capabilities will be demonstrated with select test problems by CUA. DyLAN is the next logically tool for a mission design team that current uses NASA’s EMTG for interplanetary and GMAT for flight fidelity solutions.