Can the Orbital Debris Disease Be Cured Using Lasers?

Ground-based high-power lasers are, in principle, able to de-orbit any kind of space debris object from the low Earth orbit (LEO) by remotely inducing laser-ablative momentum. However, the assessment of efficiency and operational safety depends on many factors, like atmospheric constraints or the ri...

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Main Authors: Stefan Scharring, Jürgen Kästel
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Aerospace
Subjects:
Online Access:https://www.mdpi.com/2226-4310/10/7/633
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author Stefan Scharring
Jürgen Kästel
author_facet Stefan Scharring
Jürgen Kästel
author_sort Stefan Scharring
collection DOAJ
description Ground-based high-power lasers are, in principle, able to de-orbit any kind of space debris object from the low Earth orbit (LEO) by remotely inducing laser-ablative momentum. However, the assessment of efficiency and operational safety depends on many factors, like atmospheric constraints or the risk of debris disintegration during irradiation. We analyze laser momentum for a great variety of target geometries and sizes and—for the first time in a large-scale simulation—include thermal constraints in the laser irradiation configuration. Using a coherently coupled 100 kJ laser system at 1030 nm wavelength and a 5 ns pulse duration in an optimized pointing elevation angle range, the pulse frequency should amount to less than 10 Hz to prevent fragment meltdown. For mechanically intact payloads or rocket bodies, repetition rates should be even lower. Small debris fragments sized between 10 and 40 cm can be de-orbited by employing around 100 to 400 station passes with head-on irradiation, while objects exceeding 2 m typically require far more than 1000 irradiations for de-orbit. Hence, laser-based debris removal cannot be considered a prime space sustainability measure to tackle the highest-risk large debris, yet it can provide the remediation of a multitude of small-sized debris using small networks of globally distributed laser sites.
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spelling doaj.art-e779ad87c2cf446d92a404a2672ca3fb2023-11-18T17:51:03ZengMDPI AGAerospace2226-43102023-07-0110763310.3390/aerospace10070633Can the Orbital Debris Disease Be Cured Using Lasers?Stefan Scharring0Jürgen Kästel1Institute of Technical Physics, German Aerospace Center (DLR), Pfaffenwaldring 38–40, 70569 Stuttgart, GermanyInstitute of Technical Physics, German Aerospace Center (DLR), Pfaffenwaldring 38–40, 70569 Stuttgart, GermanyGround-based high-power lasers are, in principle, able to de-orbit any kind of space debris object from the low Earth orbit (LEO) by remotely inducing laser-ablative momentum. However, the assessment of efficiency and operational safety depends on many factors, like atmospheric constraints or the risk of debris disintegration during irradiation. We analyze laser momentum for a great variety of target geometries and sizes and—for the first time in a large-scale simulation—include thermal constraints in the laser irradiation configuration. Using a coherently coupled 100 kJ laser system at 1030 nm wavelength and a 5 ns pulse duration in an optimized pointing elevation angle range, the pulse frequency should amount to less than 10 Hz to prevent fragment meltdown. For mechanically intact payloads or rocket bodies, repetition rates should be even lower. Small debris fragments sized between 10 and 40 cm can be de-orbited by employing around 100 to 400 station passes with head-on irradiation, while objects exceeding 2 m typically require far more than 1000 irradiations for de-orbit. Hence, laser-based debris removal cannot be considered a prime space sustainability measure to tackle the highest-risk large debris, yet it can provide the remediation of a multitude of small-sized debris using small networks of globally distributed laser sites.https://www.mdpi.com/2226-4310/10/7/633space debrisspace sustainabilityKessler syndromedebris removalhigh-energy laserslaser pulse repetition rate
spellingShingle Stefan Scharring
Jürgen Kästel
Can the Orbital Debris Disease Be Cured Using Lasers?
Aerospace
space debris
space sustainability
Kessler syndrome
debris removal
high-energy lasers
laser pulse repetition rate
title Can the Orbital Debris Disease Be Cured Using Lasers?
title_full Can the Orbital Debris Disease Be Cured Using Lasers?
title_fullStr Can the Orbital Debris Disease Be Cured Using Lasers?
title_full_unstemmed Can the Orbital Debris Disease Be Cured Using Lasers?
title_short Can the Orbital Debris Disease Be Cured Using Lasers?
title_sort can the orbital debris disease be cured using lasers
topic space debris
space sustainability
Kessler syndrome
debris removal
high-energy lasers
laser pulse repetition rate
url https://www.mdpi.com/2226-4310/10/7/633
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