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The 25-Year Guideline: A New Approach For Practice

Fiedler, Hauke and Hackel, Stefan (2021) The 25-Year Guideline: A New Approach For Practice. 72nd International Astronautical Congress (IAC 2021), 25.-29. Okt. 2021, Dubai, Vereinigte Arabische Emirate. ISSN 0074-1795.

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As space is more contested and congested, it is a prerequisite to keep space as clean as possible for long term sustainability. One mean is the disposal of spacecraft after the end of their mission. For the time between end of mission and re-entry, several suggestions have been made, and one acknowledged proposal is the 25-year guideline. This guideline states, that each spacecraft shall be either returned onto the Earth’s ground or parked into a graveyard orbit 25 years after the end of mission. As the Sun and its activity is not predictable with high accuracy, mission designers make assumptions to calculate the remaining time in orbit. In most of the cases, the estimation is much shorter than in reality. To improve the situation, a new estimation approach is proposed and assessed by several decay objects. First, objects in space, which had been launched and already re-entered, are propagated from their end of mission to re-entry with existing atmospheric models and observed solar and geomagnetic values. The results and accuracy are presented. Subsequently, a simple model is established, which estimates the atmospheric drag with several uncertainties including the solar activity. Along with these models, the debris objects are propagated accordingly, resulting in new re-entry times. Based on the presented study, new rules can be established that ensure a better fulfilment of the 25-year guideline compared to the previous models.

Item URL in elib:https://elib.dlr.de/146871/
Document Type:Conference or Workshop Item (Speech)
Title:The 25-Year Guideline: A New Approach For Practice
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Fiedler, HaukeHauke.Fiedler (at) dlr.deUNSPECIFIED
Hackel, StefanStefan.Hackel (at) dlr.deUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:space debris, re-entry, life time prediction
Event Title:72nd International Astronautical Congress (IAC 2021)
Event Location:Dubai, Vereinigte Arabische Emirate
Event Type:international Conference
Event Dates:25.-29. Okt. 2021
Organizer:International Astronautical Federation (IAF)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Methods for improved detection, location and tracking of orbital objects
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Space Flight Technology
Deposited By: Fiedler, Dr. Hauke
Deposited On:08 Dec 2021 10:03
Last Modified:13 Dec 2021 10:00

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