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Ultralight Deployable Booms for Solar Sails and Other Large Gossamer Structures in Space

Block, Joachim und Straubel, Marco und Wiedemann, Martin (2010) Ultralight Deployable Booms for Solar Sails and Other Large Gossamer Structures in Space. Acta Astronautica, 68 (7-8), Seiten 984-992. Elsevier . DOI: 10.1016/j.actaastro.2010.09.005. ISSN 0094-5765.

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Offizielle URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V1N-51430JM-1&_user=100058&_coverDate=05%2F31%2F2011&_rdoc=33&_fmt=high&_orig

Kurzfassung

Future solar sail spacecraft which do not need any rocket motors and propellants are a promising option for long-term exploration missions in the solar system. However, they will require ultralight reflective foils and deployable booms which will allow for the unfolding of huge sails. The achievement of an acceptable ratio of reflective sail area and structural mass, which results in a still small, but significant acceleration under the photon pressure of sunlight, is extremely challenging. The same challenging deployment technique is required for the unfolding of large reflector membranes or antennas (gossamer structures). The key elements are the booms which must be stowable in a very small envelope before they reach their destination in space. Such booms were developed by DLR and have been successfully tested under zero-g-conditions during a parabolic flight campaign in February 2009. It could be convinc-ingly demonstrated that the unfolding process is both controllable and reproducible. The booms consisted of two co-bonded omega-shaped carbonfiber half shells with 0.1 mm wall thickness each and had a weight of only 62 grams per meter. Two different deployment technologies were tested, one based upon an inflatable 12μm thick polymer hose inside the boom, the other one using an electromechanical uncoiling device at the tip of each boom. In the latter case, the uncoiling devices will radially fly away from the spacecraft, such that they become “expendable deploy-ment mechanisms” and their mass does not count any more for the spacecraft mass that needs to be accelerated or actively controlled.

Dokumentart:Zeitschriftenbeitrag
Titel:Ultralight Deployable Booms for Solar Sails and Other Large Gossamer Structures in Space
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Block, JoachimNICHT SPEZIFIZIERT
Straubel, MarcoNICHT SPEZIFIZIERT
Wiedemann, MartinNICHT SPEZIFIZIERT
Datum:2010
Erschienen in:Acta Astronautica
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:68
DOI :10.1016/j.actaastro.2010.09.005
Seitenbereich:Seiten 984-992
Verlag:Elsevier
ISSN:0094-5765
Stichwörter:Ultralight, Deployable, Space Structures, Gossamer, Solar Sail
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W SY - Technik für Raumfahrtsysteme
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W SY - Technik für Raumfahrtsysteme
DLR - Teilgebiet (Projekt, Vorhaben):W - Entfaltungstechnologie . Solar Sail (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Faserverbundleichtbau und Adaptronik
Hinterlegt von: Doris Ries
Hinterlegt am:02 Feb 2011 10:39
Letzte Änderung:20 Mär 2013 19:43

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