The ion beam shepherd: A new concept for asteroid deflection

Bombardelli, Claudio; Urrutxua, Hodei; Merino, Mario; Peláez Álvarez, Jesús y Ahedo Galilea, Eduardo (2013). The ion beam shepherd: A new concept for asteroid deflection. "Acta Astronáutica", v. 90 (n. 1); pp. 98-102. ISSN 0094-5765. https://doi.org/10.1016/j.actaastro.2012.10.019.

Descripción

Título: The ion beam shepherd: A new concept for asteroid deflection
Autor/es:
  • Bombardelli, Claudio
  • Urrutxua, Hodei
  • Merino, Mario
  • Peláez Álvarez, Jesús
  • Ahedo Galilea, Eduardo
Tipo de Documento: Artículo
Título de Revista/Publicación: Acta Astronáutica
Fecha: Septiembre 2013
Volumen: 90
Materias:
Palabras Clave Informales: Asteroid deflection; Low thrust; Ion beam shepherd; Gravity tractor; b-plane; Tangential thrust
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Aeronaves y Vehículos Espaciales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

A novel slow push asteroid deflection strategy has been recently proposed in which an Earth threatening asteroid can be deflected by exploiting the momentum transmitted by a collimated beam of quasi-neutral plasma impinging against the asteroid surface. The beam can be generated with state-of-the art ion engines from a hovering spacecraft with no need for physical attachment or gravitational interaction with the celestial body. The spacecraft, placed at a distance of a few asteroid diameters, would need an ion thruster pointed at the asteroid surface as well as a second propulsion system to compensate for the ion engine reaction and keep the distance between the asteroid and the shepherd satellite constant throughout the deflection phase. A comparison in terms of required spacecraft mass per total imparted deflection impulse shows that the method outperforms the gravity tractor concept by more than one order of magnitude for asteroids up to about 200 m diameter. The two methods would yield comparable performance for asteroids larger than about 2 km

Más información

ID de Registro: 33098
Identificador DC: http://oa.upm.es/33098/
Identificador OAI: oai:oa.upm.es:33098
Identificador DOI: 10.1016/j.actaastro.2012.10.019
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0094576512003979
Depositado por: Memoria Investigacion
Depositado el: 19 Dic 2014 17:04
Ultima Modificación: 19 Dic 2014 17:04
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