The ion beam shepherd: A new concept for asteroid deflection

Bombardelli, Claudio and Urrutxua, Hodei and Merino, Mario and Peláez Álvarez, Jesús and 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.

Description

Title: The ion beam shepherd: A new concept for asteroid deflection
Author/s:
  • Bombardelli, Claudio
  • Urrutxua, Hodei
  • Merino, Mario
  • Peláez Álvarez, Jesús
  • Ahedo Galilea, Eduardo
Item Type: Article
Título de Revista/Publicación: Acta Astronáutica
Date: September 2013
ISSN: 0094-5765
Volume: 90
Subjects:
Freetext Keywords: Asteroid deflection; Low thrust; Ion beam shepherd; Gravity tractor; b-plane; Tangential thrust
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Aeronaves y Vehículos Espaciales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (344kB) | Preview

Abstract

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

More information

Item ID: 33098
DC Identifier: http://oa.upm.es/33098/
OAI Identifier: oai:oa.upm.es:33098
DOI: 10.1016/j.actaastro.2012.10.019
Official URL: http://www.sciencedirect.com/science/article/pii/S0094576512003979
Deposited by: Memoria Investigacion
Deposited on: 19 Dec 2014 17:04
Last Modified: 19 Dec 2014 17:04
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM