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A 1 cm space debris impact onto the Sentinel-1A solar array

Krag, H. and Serrano, M. and Braun, V. and Kuchynka, P. and Catania, M. and Siminski, Jan and Schimmerohn, M. and Marc, X. and Kuijper, D. and Shurmer, Ian and O'Connel, A. and Otten, M. and Muñoz, Isidro and Morales, J. and Wermuth, Martin and McKissock, D. (2017) A 1 cm space debris impact onto the Sentinel-1A solar array. Acta Astronautica, 137, pp. 434-443. Elsevier. DOI: 10.1016/j.actaastro.2017.05.010 ISSN 0094-5765

Full text not available from this repository.

Official URL: http://http://www.sciencedirect.com/science/article/pii/S0094576517304125

Abstract

Sentinel-1A is a 2-ton spacecraft of the Copernicus Earth observation program operated by ESA's Space Operations Centre in Darmstadt, Germany. Sentinel-1A and its sister spacecraft Sentinel-1B operate in a sun-synchronous orbit at about 700 km altitude. On 2016/08/23 17:07:37 UTC, Sentinel-1A suffered from an anomaly resulting in a sudden permanent partial power loss and significant impulsive orbit and attitude changes. A deeper investigation identified that an impulsive orbit change against flight direction of 0.7 mm/s, estimated at the time of the event, gave the best results in terms of GPS residuals. At the same time, a peak attitude off-pointing of 0.7° (around the spacecraft yaw axis) and peak attitude rate increase of 0.04°/s (around the same axis) were observed. The simultaneous occurrence of these anomalies, starting from a sudden attitude change and ending with a permanent partial power loss, made an MMOD (Micro-Meteoroid and Orbital Debris) impact onto a solar array a possible explanation for this event. While the spacecraft is able to continue its mission nominally, a detailed investigation involving ESA's Space Debris and Flight Dynamics experts was conducted. An MMOD impact as an explanation gained further credibility, due to the pictures of the solar array taken by the on-board camera displaying a significant damage area. On September 7th, JSpOC (US Joint Space Operations Centre) informed SDO on 8 tracked fragments that are considered to be released by Sentinel-1A after the impact. This paper addresses the analysis that was performed on the data characterising the attitude and orbit change, the on-board camera image, and the tracked fragments. The data helped to identify the linear momentum vector while a flux analysis helped to identify the origin of the impactor and allowed to understand its mass and size characteristics.

Item URL in elib:https://elib.dlr.de/113658/
Document Type:Article
Title:A 1 cm space debris impact onto the Sentinel-1A solar array
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Krag, H.ESA/ESOCUNSPECIFIED
Serrano, M.ESA/ESOCUNSPECIFIED
Braun, V.ESA/ESOCUNSPECIFIED
Kuchynka, P.ESA/ESOCUNSPECIFIED
Catania, M.ESA/ESOCUNSPECIFIED
Siminski, JanESA/ESOCUNSPECIFIED
Schimmerohn, M.EMIUNSPECIFIED
Marc, X.ESA/ESOCUNSPECIFIED
Kuijper, D.ESA/ESOCUNSPECIFIED
Shurmer, Ianesa/esocUNSPECIFIED
O'Connel, A.ESA/ESOCUNSPECIFIED
Otten, M.ESA/ESOCUNSPECIFIED
Muñoz, IsidroESA/ESOCUNSPECIFIED
Morales, J.ESA/ESOCUNSPECIFIED
Wermuth, Martinmartin.wermuth (at) dlr.deUNSPECIFIED
McKissock, D.AOCUNSPECIFIED
Date:August 2017
Journal or Publication Title:Acta Astronautica
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:137
DOI :10.1016/j.actaastro.2017.05.010
Page Range:pp. 434-443
Publisher:Elsevier
ISSN:0094-5765
Status:Published
Keywords:Space debris Hypervelocity impact Space surveillance Sentinel Anomaly
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Infrastruktur und Unterstützung für Raumflugbetrieb
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Space Flight Technology
Deposited By: Wermuth, Martin
Deposited On:10 Aug 2017 09:41
Last Modified:10 Jan 2019 15:40

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