Synergistic approach of asteroid exploitation and planetary protection

Sanchez, J.P. and McInnes, C.R. (2012) Synergistic approach of asteroid exploitation and planetary protection. Advances in Space Research, 49(4), pp. 667-685. (doi:10.1016/j.asr.2011.11.014)

Sanchez, J.P. and McInnes, C.R. (2012) Synergistic approach of asteroid exploitation and planetary protection. Advances in Space Research, 49(4), pp. 667-685. (doi:10.1016/j.asr.2011.11.014)

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Publisher's URL: http://dx.doi.org/10.1016/j.asr.2011.11.014

Abstract

The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale space engineering ventures. This paper explores possible synergies between these two apparently opposed views; planetary protection and space resource exploitation. In particular, the paper assumes a 5 tonne low-thrust spacecraft as a baseline for asteroid deflection and capture (or resource transport) missions. The system is assumed to land on the asteroid and provide a continuous thrust able to modify the orbit of the asteroid according to the mission objective. The paper analyses the capability of such a near-term system to provide both planetary protection and asteroid resources to Earth. Results show that a 5 tonne spacecraft could provide a high level of protection for modest impact hazards: airburst and local damage events (caused by 15–170 m diameter objects). At the same time, the same spacecraft could also be used to transport to bound Earth orbits significant quantities of material through judicious use of orbital dynamics and passively safe aero-capture manoeuvres or low energy ballistic capture. As will be shown, a 5 tonne low-thrust spacecraft could potentially transport between 12 and 350 times its own mass of asteroid resources by means of ballistic capture or aero-capture trajectories that pose very low dynamical pressures on the object.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McInnes, Professor Colin
Authors: Sanchez, J.P., and McInnes, C.R.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:Advances in Space Research
Publisher:Elsevier
ISSN:0273-1177
ISSN (Online):1879-1948

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