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Momentum Predictability and Heat Accumulation in Laser-based Space Debris Removal

Scharring, Stefan and Eisert, Lukas and Lorbeer, Raoul-Amadeus and Eckel, Hans-Albert (2018) Momentum Predictability and Heat Accumulation in Laser-based Space Debris Removal. High Power Laser Ablation 2018, 26.-29. März 2018, Santa Fe, NM, USA.

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Small-sized space debris objects pose a challenging threat for aerospace security: Within a size range of 1 to 10 centimeters they are still large enough to cause severe damage to space assets but, moreover, they are almost too small to be detected and monitored. Recent progresses in laser-based debris monitoring yield promising results in detection and tracking of even small-sized debris objects and enable for the short-term solution of obstacle avoidance maneuvers. For the long run, however, it has to be analyzed whether and how the usage of high energy lasers can provide for a reliable solution of the space debris problem in the abovementioned particle size range. In our simulations we explore both potential and limitations of laser-ablative momentum generation, in particular with respect to the predictability of its magnitude and direction as well as to the accumulation of residual heat from the ablation process. For this purpose, we use Monte Carlo simulations with a variety of debris target geometries in order to analyze how restrictions in laser pointing accuracy as well as random target orientation affect the predictability of laser-ablative momentum generation. Moreover, pulse number restrictions are discussed in order to avoid target melting and its compactification. A database on laser-matter interaction is established for various materials and laser parameters enabling us to account for the local fluence distribution on the target surface obtained by raytracing with respect to the laser beam profile. Accordingly, main similarities and differences between short-pulse and ultrashort-pulse laser ablation are highlighted and discussed with respect to their implications for debris removal.

Item URL in elib:https://elib.dlr.de/119573/
Document Type:Conference or Workshop Item (Speech)
Title:Momentum Predictability and Heat Accumulation in Laser-based Space Debris Removal
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Scharring, Stefanstefan.scharring (at) dlr.deUNSPECIFIED
Eisert, Lukaslukas.eisert (at) dlr.deUNSPECIFIED
Lorbeer, Raoul-Amadeusraoul.lorbeer (at) dlr.deUNSPECIFIED
Eckel, Hans-AlbertHans-Albert.Eckel (at) dlr.dehttps://orcid.org/0000-0002-4581-6375
Date:27 March 2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Space debris, Debris removal, High energy laser, Laser Ablation, Monte Carlo Simulation
Event Title:High Power Laser Ablation 2018
Event Location:Santa Fe, NM, USA
Event Type:international Conference
Event Dates:26.-29. März 2018
Organizer:Claude Phipps, Photonic Associates, LLC, Santa Fe (USA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Studies and Concepts
Deposited By: Scharring, Stefan
Deposited On:02 May 2018 16:50
Last Modified:31 Jul 2019 20:17

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