Deflection of earth-crossing asteroids/comets using rendezvous spacecraft and laser ablation

Sang Young Park, Daniel D. Mazanek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Space missions are presented to deflect four fictitious Earth impacting objects by using an advanced magnetoplasma spacecraft designed to deliver a laser ablation payload. The laser energy required to provide sufficient change in velocity is estimated for one long-period comet and three asteroids, and an optimal rendezvous trajectory is provided for each threat scenario. The end-to-end simulations provide an overall concept for solving the deflection problem. These analyses illustrate that the optimal deflection strategy is highly dependent on the size and the orbital elements of the impacting object, as well as the amount of warning time. A rendezvous spacecraft with a multi-megawatt laser ablation payload could be available by the year 2050. This approach could provide a capable and robust orbit modification approach for altering the orbits of Earth-crossing objects with relatively small size or long warning time. Significant technological advances, multiple spacecraft, or alternative deflection techniques are required for a feasible scenario to protect the Earth from an impacting celestial body with large size and short warning time.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 2004 Planetary Defense Conference
Subtitle of host publicationProtecting Earth from Asteroids
Pages257-268
Number of pages12
Publication statusPublished - 2004 Dec 1
EventCollection of Technical Papers - 2004 Planetary Defense Conference: Protecting Earth from Asteroids - Orange County, CA, United States
Duration: 2004 Feb 232004 Feb 26

Publication series

NameCollection of Technical Papers - 2004 Planetary Defense Conference: Protecting Earth from Asteroids

Other

OtherCollection of Technical Papers - 2004 Planetary Defense Conference: Protecting Earth from Asteroids
CountryUnited States
CityOrange County, CA
Period04/2/2304/2/26

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Park, S. Y., & Mazanek, D. D. (2004). Deflection of earth-crossing asteroids/comets using rendezvous spacecraft and laser ablation. In Collection of Technical Papers - 2004 Planetary Defense Conference: Protecting Earth from Asteroids (pp. 257-268). [AIAA 2004-1433] (Collection of Technical Papers - 2004 Planetary Defense Conference: Protecting Earth from Asteroids).