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Re-Entry Analyses and Ground Footprint Determination of Generic Satellites using DRAMA and Python

Bergmann, Kevin (2021) Re-Entry Analyses and Ground Footprint Determination of Generic Satellites using DRAMA and Python. Project Report. SART TN-003/2021. 51 S.

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Within the scope of a contract for Bayern Chemie GmbH (BC), a study about the post mission disposal and re-entry of an arbitrary spacecraft (S/C) was performed. This study investigated, which velocity increments ΔV are required in order to de-orbit a generic S/C from a given initial orbit and to what extend the applied velocity increment influences the scatter of fragments of this S/C on Earth’s surface. Additionally, the influence of inaccuracies during the de-orbit burn (in ΔV, initial altitude and ignition time) and in modelling the break-up behavior of the S/C were investigated. The study aimed at developing a fundamental understanding on re-entry mechanics and on the size and shape of the resulting re-entry area(s) (REA). It was found, that higher ΔVs lead to a smaller REAs and thus compactify the ground footprint of a S/C, but also cause a higher number of fragments to impact on Earth’s surface (instead of dissipating sufficient energy to become uncritical). It was also recognized, that the higher the initial orbit of a S/C, the smaller its corresponding REA becomes – accommodated however by a larger number of fragments reaching Earth’s surface. Furthermore, a concluding Monte-Carlo analysis showed that high initial orbits are especially sensitive towards inaccuracies regarding the de-orbit maneuver.

Item URL in elib:https://elib.dlr.de/144137/
Document Type:Monograph (Project Report)
Additional Information:Das PDF ist auf Anfrage bei RY-SRT erhältlich!
Title:Re-Entry Analyses and Ground Footprint Determination of Generic Satellites using DRAMA and Python
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:15 March 2021
Refereed publication:No
Open Access:No
Number of Pages:51
Keywords:DRAMA, SARA, Python, Re-Entry, Re-Entry Area, Safety re-Entry Area, Casualty Area
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Systems Analysis Space Transport (SART)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Space Launcher Systems Analysis
Deposited By: Vormschlag, Nele Marei
Deposited On:30 Sep 2021 11:57
Last Modified:30 Sep 2021 11:57

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