Picture of two heads

Open Access research that challenges the mind...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Optimal impact strategies for asteroid deflection

Vasile, M. and Colombo, C. (2008) Optimal impact strategies for asteroid deflection. Journal of Guidance, Control and Dynamics, 31 (4). pp. 858-872. ISSN 0731-5090

[img]
Preview
PDF (Colombo_C_-_strathprints_-_Optimal_Impact_Strategies_for_Asteroid_Deflection.pdf)
Colombo_C_-_strathprints_-_Optimal_Impact_Strategies_for_Asteroid_Deflection.pdf

Download (740kB) | Preview

Abstract

This paper presents an analysis of optimal impact strategies to deflect potentially dangerous asteroids. To compute the increase in the minimum orbit intersection distance of the asteroid due to an impact with a spacecraft, simple analytical formulas are derived from proximal motion equations. The proposed analytical formulation allows for an analysis of the optimal direction of the deviating impulse transferred to the asteroid. This ideal optimal direction cannot be achieved for every asteroid at any time; therefore, an analysis of the optimal launch opportunities for deviating a number of selected asteroids was performed through the use of a global optimization procedure. The results in this paper demonstrate that the proximal motion formulation has very good accuracy in predicting the actual deviation and can be used with any deviation method because it has general validity. Furthermore, the characterization of optimal launch opportunities shows that a significant deviation can be obtained even with a small spacecraft.