Optimal deflection of earth-crossing objects using a power limited spacecraft

Young Joo Song, Sang Young Park, Kyu Hong Choi

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

4 Citations (Scopus)

Abstract

An optimal deflection method for Earth-Crossing Objects (ECOs) is formulated using a power limited spacecraft. To avoid the Earth impact, ECO's momentum is changed continuously using a power limited laser ablation system carried by the conceptual future spacecraft. The optimal operating duration and deflection angle variation history are estimated for various ECOs by using several power levels of ablation system. It is concluded that the timing of the operation start is very important. It is preferred to be as early as possible because the early start of operation requires relatively short operating duration with small operation angle variations. The method of continuous momentum change is more practical because there will be no fragmentation of ECO or unexpected ECO's orbital motions.

Original languageEnglish
Title of host publicationAmerican Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting
Pages701-718
Number of pages18
Volume127 PART 1
Publication statusPublished - 2007 Dec 1
Event17th Annual Space Flight Mechanics Meeting - Sedona, AZ, United States
Duration: 2007 Jan 282007 Feb 1

Other

Other17th Annual Space Flight Mechanics Meeting
CountryUnited States
CitySedona, AZ
Period07/1/2807/2/1

Fingerprint

power limited spacecraft
deflection
Spacecraft
spacecraft
Earth (planet)
ablation
momentum
Momentum
Laser ablation
Ablation
laser ablation
fragmentation
laser
time measurement
histories
orbits
history

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

Cite this

Song, Y. J., Park, S. Y., & Choi, K. H. (2007). Optimal deflection of earth-crossing objects using a power limited spacecraft. In American Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting (Vol. 127 PART 1, pp. 701-718)
Song, Young Joo ; Park, Sang Young ; Choi, Kyu Hong. / Optimal deflection of earth-crossing objects using a power limited spacecraft. American Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting. Vol. 127 PART 1 2007. pp. 701-718
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Song, YJ, Park, SY & Choi, KH 2007, Optimal deflection of earth-crossing objects using a power limited spacecraft. in American Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting. vol. 127 PART 1, pp. 701-718, 17th Annual Space Flight Mechanics Meeting, Sedona, AZ, United States, 07/1/28.

Optimal deflection of earth-crossing objects using a power limited spacecraft. / Song, Young Joo; Park, Sang Young; Choi, Kyu Hong.

American Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting. Vol. 127 PART 1 2007. p. 701-718.

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

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N2 - An optimal deflection method for Earth-Crossing Objects (ECOs) is formulated using a power limited spacecraft. To avoid the Earth impact, ECO's momentum is changed continuously using a power limited laser ablation system carried by the conceptual future spacecraft. The optimal operating duration and deflection angle variation history are estimated for various ECOs by using several power levels of ablation system. It is concluded that the timing of the operation start is very important. It is preferred to be as early as possible because the early start of operation requires relatively short operating duration with small operation angle variations. The method of continuous momentum change is more practical because there will be no fragmentation of ECO or unexpected ECO's orbital motions.

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Song YJ, Park SY, Choi KH. Optimal deflection of earth-crossing objects using a power limited spacecraft. In American Astronautical Society - Space Flight Mechanics 2007 - Advances in the Astronautical Sciences, Proceedings of the AAS/AIAA Space Flight Mechanics Meeting. Vol. 127 PART 1. 2007. p. 701-718