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Title:Long-term effects of satellite megaconstellations on the debris environment in low earth orbit
Author(s):Hardy, Brian Patrick
Advisor(s):Ho, Koki
Department / Program:Aerospace Engineering
Discipline:Aerospace Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):space debris
megaconstellations
active debris removal
Abstract:This thesis examines the potential long-term impacts of satellite megaconstellations in Low Earth Orbit, with a focus on how post-mission disposal rates for megaconstellations will affect their contributions to orbital debris over the next 150 years. A new, medium-fidelity simulation for modeling orbital debris is developed and described, and several test cases are run with SpaceX’s Starlink megaconstellation and varying success rates for post-mission disposal. In cases where Starlink’s post-mission disposal rate is insufficient to prevent debris growth, varying amounts of active debris removal are explored as a potential mitigation measure. It is shown that LEO debris levels will grow at almost double their baseline rate if Starlink meets only the minimum regulatory requirements for post-mission disposal, and even relatively high rates of active debris removal cannot always return the LEO environment to its non-megaconstellation baseline. Still, the potential exists to minimize the debris-generating effects of large megaconstellations like Starlink if post-mission disposal rates of 95% or better can be achieved.
Issue Date:2020-05-11
Type:Thesis
URI:http://hdl.handle.net/2142/108004
Rights Information:Copyright 2020 Brian Hardy
Date Available in IDEALS:2020-08-26
Date Deposited:2020-05


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