Picture of satellite hovering above Earth

Open Access research exploring new frontiers in aerospace engineering...

Strathprints makes available Open Access scholarly outputs by the Department of Mechanical & Aerospace Engineering at Strathclyde, which includes an emphasis on air and space research. The Advanced Space Concepts Laboratory (ASCL), the Future Air-Space Transportation Technology Laboratory (FASTTlab) and the Intelligent Computational Engineering Laboratory (ICElab) specialise in this work.

The ASCL undertakes frontier research on visionary space systems, delivering radically new approaches to space systems engineering. Meanwhile, FASTTlab seeks to revolutionise the global air-space transportation systems and infrastructure. ICElab develops advanced research on artificial and computational intelligence techniques with particular focus on optimisation, optimal control, uncertainty-based multidisciplinary design optimisation and machine learning applied to the design and control of complex engineering systems.

Learn more and explore the Open Access research by ASCL, FASTTlab and ICElab. Or, explore all of Strathclyde's Open Access research...

Evidence-based robust design of deflection actions for near Earth objects

Zuiani, Federico and Vasile, Massimiliano and Gibbings, Alison (2012) Evidence-based robust design of deflection actions for near Earth objects. Celestial Mechanics and Dynamical Astronomy, 114 (1-2). pp. 107-136. ISSN 0923-2958

[img] PDF

Download (997kB)


This paper presents a novel approach to the robust design of deflection actions for Near Earth Objects (NEO). In particular, the case of deflection by means of Solar-pumped Laser ablation is studied here in detail. The basic idea behind Laser ablation is that of inducing a sublimation of the NEO surface, which produces a low thrust thereby slowly deviating the asteroid from its initial Earth threatening trajectory. This work investigates the integrated design of the Space-based Laser system and the deflection action generated by laser ablation under uncertainty. The integrated design is formulated as a multi-objective optimisation problem in which the deviation is maximised and the total system mass is minimised. Both the model for the estimation of the thrust produced by surface laser ablation and the spacecraft system model are assumed to be affected by epistemic uncertainties (partial or complete lack of knowledge). Evidence Theory is used to quantify these uncertainties and introduce them in the optimisation process. The propagation of the trajectory of the NEO under the laser-ablation action is performed with a novel approach based on an approximated analytical solution of Gauss’ Variational Equations. An example of design of the deflection of asteroid Apophis with a swarm of spacecraft is presented.