Re-entry predictions of space objects and impact on air traffic

Re-entry predictions of space objects and impact on air traffic

Franco Bernelli-Zazzera, Camilla Colombo, Mattia Recchia

Abstract. This work focuses on predicting the re-entry of an uncontrolled re-entry vehicle (RV) and how this affects air traffic. It includes the propagation of the nominal trajectory and that of the fragments resulting from the breakup of the object. The breakup does not occur at a fixed altitude but is a consequence of the thermal and dynamic loads acting on the RV as it re-enters the atmosphere. The purpose of the analysis is to identify a dangerous area at specific heights (flight levels) to be evacuated in time for air traffic. The hazard area is defined as that which includes all the impact points of the fragments at this altitude taking into account the additional safety margins. The study also considers the presence of uncertainties affecting the initial state of the vehicle. Accordingly, a Monte Carlo analysis is performed to predict the worst-case scenario and to better estimate the hazard area. Once the area has been defined, an evacuation algorithm calculates, for each aircraft, the trajectory changes necessary to clear or avoid the zone over time.

Keywords
Spacecraft Re-Entry, Breakup, Air Traffic

Published online 11/1/2023, 5 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Franco Bernelli-Zazzera, Camilla Colombo, Mattia Recchia, Re-entry predictions of space objects and impact on air traffic, Materials Research Proceedings, Vol. 37, pp 639-643, 2023

DOI: https://doi.org/10.21741/9781644902813-139

The article was published as article 139 of the book Aeronautics and Astronautics

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] F. J. Regan and S. M. Anandakrishnan. Dynamics of Atmospheric Re-Entry. AIAA Education Series. American Institute of Aeronautics and Astronautics, 1993. ISBN 9781600860461. https://doi.org/10.2514/4.861741
[2] F. Sanson. On-ground risk estimation of reentering human-made space objects. PhD thesis, 09 2019.
[3] N.L. Johnson, P. Krisko, J.-C Liou, and P. Anz-Meador. Nasa’s new breakup model of evolve 4.0. Advances in Space Research, 28:1377–1384, 12 2001.. https://doi.org/10.1016/S0273-1177(01)00423-9
[4] P. Mehta, E. Minisci, and M. Vasile. Breakup modelling and trajectory simulation under uncertainty for asteroids. 04 2015.
[5] Ganghuai W., Zheng T., T. Masek, and J. Schwartz. A monte carlo simulation tool for evaluating space launch and re-entry operations. In 2016 Integrated Communications Navigation and Surveillance (ICNS), pages 9A3–1–9A3–15, 2016. dhttps://doi.org/10.1109/ICNSURV.2016.7486392
[6] Flightradar24. flightradar24:live air traffic, Accessed on 25 May 2023.