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Design of the Gossamer-1 Deployment Demonstrator

Spröwitz, Tom and Seefeldt, Patric and Grundmann, Jan Thimo and Spietz, Peter and Toth, Norbert and Hillebrandt, Martin and Straubel, Marco and Zander, Martin E. (2017) Design of the Gossamer-1 Deployment Demonstrator. In: Proceedings of The Fourth International Symposium on Solar Sailing. The Fourth International Symposium on Solar Sailing, 17-20 January 2017, Kyoto, Japan.

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Official URL: http://www.jsforum.or.jp/ISSS2017/


Gossamer structures for solar sails, require a technology that allows a controlled and thereby reliable deployment. This is important to stop and restart the deployment in case of failures during deployment and to prevent an entanglement of the sail with other elements based on suitable sail stowing techniques. Before employing such a technology for a dedicated science mission, it is necessary, to demonstrate its reliability with a Technology Readiness Level (TRL) of six or higher. The aim of the work presented is to provide an overview of the mission and of a system for controlled deployment. The development was conducted within the Gossamer-1 project of the German Aerospace Center (DLR). For a system based on coilable booms and coated polyimide foils the design of the deployment mechanisms and electronics required is shown. The design is based on a crossed boom configuration with four triangular sail segments. According to a stepwise development of scalable gossamer systems, the design is implemented for a five by five meter sail. The satellite has an estimated mass of about 30 kg with a compact launch configuration with a maximum width of 790 mm and a height of 500 mm. Design drivers are explained and a mission design in presented. By combining different functional principles respectively mechanisms a simultaneous deployment of the booms and the sail segments is achieved. The main innovation is to deploy the sail segments with deployment units that move away from the central satellite bus. This ensures that only a minimum amount of the sail is deployed that can be spanned between the deploying booms. By this the system is always in a mechanical stable state. The deployment can be performed in a slow and controlled manner and it can even be stopped and resumed if necessary without any risk of entanglement of the sail. An innovative stowing and deployment strategy for a controlled deployment was implemented. It offers a possible solution for the deployment of solar sails and might also be adapted for other deployable structures such as photovoltaic arrays based on flexible thin-film photovoltaics.

Item URL in elib:https://elib.dlr.de/111055/
Document Type:Conference or Workshop Item (Speech)
Title:Design of the Gossamer-1 Deployment Demonstrator
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Spröwitz, TomUNSPECIFIEDhttps://orcid.org/0000-0001-5369-6919UNSPECIFIED
Grundmann, Jan ThimoUNSPECIFIEDhttps://orcid.org/0000-0002-8809-0981UNSPECIFIED
Date:20 January 2017
Journal or Publication Title:Proceedings of The Fourth International Symposium on Solar Sailing
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:deployment systems, deployable structures, deployable membranes, solar sailing, verification testing, mechanisms
Event Title:The Fourth International Symposium on Solar Sailing
Event Location:Kyoto, Japan
Event Type:international Conference
Event Dates:17-20 January 2017
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 - Entfaltungstechnologie . Solar Sail (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Mechanic and Thermal Systems
Institute of Space Systems > Avionics Systems
Institute of Space Systems > Systems Engineering and Project Office
Deposited By: Sznajder, Dr.-Ing. Maciej
Deposited On:10 Feb 2017 12:36
Last Modified:31 Jul 2019 20:08

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