There are currently over 7,700 known Near-Earth Asteroids (NEAs), and more are being discovered on a continual basis. Current models predict that the actual order of magnitude of the NEA population may range from 10' to 10 6 . The close proximity of NEA orbits to Earth's orbit makes it possible to design short duration round-trip trajectories to NEAs under the proper conditions. In previous work, 59 potentially accessible NEAs were identified for missions that depart Earth between the years 2016 and 2050 and have round-trip flight times of a year or less. We now present a new method for designing round-trip trajectories to NEAs in which the Moon's gravity aids the outbound trajectory via a lunar flyby. In some cases this gravity assist can reduce the overall spacecraft propellant required for the mission, which in turn can allow NEAs to be reached which would otherwise be inaccessible to a given mission architecture. Results are presented for a specific case study on NEA 2003 LN6.


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    Titel :

    Design of Round-trip Trajectories to Near-Earth Asteroids Utilizing a Lunar Flyby


    Beteiligte:

    Kongress:

    21st AAS/AIAA Space Flight Mechanics Meeting ; 2011 ; New Orleans, LA, United States


    Erscheinungsdatum :

    2011-02-13


    Medientyp :

    Preprint


    Format :

    Keine Angabe


    Sprache :

    Englisch





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