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ASTOS

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ASTOS is a trajectory optimization and simulation tool for launcher and reentry missions, orbit transfers, design optimization and for reentry safety assessments. It solves aerospace problems with a data driven interface and automatic initial guesses. Since 1989, the European Space Agency has developed, and improved this trajectory optimization environment to compute optimal trajectories for a variety of complex multi-phase optimal control problems. Astos is being extensively used at ESA and aerospace industry community to calculate optimal launch and entry trajectories. ASTOS was one of the tools used by ESA to assess the risk due to the ATV Jules Verne reentry. Astos is compatible with Windows and Unix platforms and is maintained and commercialized by Astos Solutions GmbH for the European Space Agency.