A novel concept for the deflection of rotating asteroids is presented, based on the conversion of the asteroid rotational kinetic energy into translational kinetic energy. Such conversion is achieved using an orbital siphon, a tether-connected chain of masses, arranged vertically from the asteroid surface, which exploits the rotation of the asteroid for the delivery of mass from the asteroid to escape. Under the conditions to be discussed, the siphon can be initiated to ensure self-sustained flow of mass from the asteroid to escape. This mechanism is proposed to use a fraction of the asteroid as reaction mass, with the asteroid rotational kinetic energy leveraged to deliver the mass to escape, and hence impart a reaction on the asteroid itself. Key parameters, such as velocity change, deflection duration, tension requirements, and siphon length, are discussed. Deflection effectiveness is assessed for different release strategies. It is shown that typical velocity changes on the order of 1    cm s 1 can be achieved within a time window of a decade.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Asteroid Deflection by Leveraging Rotational Self-Energy


    Beteiligte:
    Viale, Andrea (Autor:in) / McInnes, Colin (Autor:in) / Bailet, Gilles (Autor:in) / Ceriotti, Matteo (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.2021




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Neutron Energy Effects on Asteroid Deflection

    Horan, Lansing S. / Holland, Darren E. / Syal, Megan Bruck et al. | IEEE | 2020


    Billiards Shot for Asteroid Deflection

    Salotti, Jean-Marc | AIAA | 2003


    Effects of asteroid rotation on directed energy deflection

    Johansson, Isabella E. / Tsareva, Tatiana / Griswold, Janelle et al. | SPIE | 2014


    Mission Design for a Kinetic-Energy Asteroid-Deflection Spacecraft

    Petropoulos, A. / Sims, J. / Bhaskaran, S. et al. | British Library Conference Proceedings | 2008


    Lasers for Asteroid and Debris Deflection

    Vasile, Massimiliano / Minisci, Edmondo / Jankovic, Marko et al. | AIAA | 2016