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A stowing and deployment strategy for large membrane space systems on the example of Gossamer-1

Seefeldt, Patric (2017) A stowing and deployment strategy for large membrane space systems on the example of Gossamer-1. Advances in Space Research, 60 (6), pp. 1345-1362. Elsevier. doi: 10.1016/j.asr.2017.06.006. ISSN 0273-1177.

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Official URL: http://www.sciencedirect.com/science/article/pii/S0273117717304131


Deployment systems for innovative space applications such as solar sails require a technique for a controlled and autonomous deployment in space. The deployment process has a strong impact on the mechanism and structural design and sizing. On the example of the design implemented in the Gossamer-1 project of the German Aerospace Center (DLR), such a stowing and deployment process is analyzed. It is based on a combination of zig-zag folding and coiling of triangular sail segments spanned between crossed booms. The deployment geometry and forces introduced by the mechanism considered are explored in order to reveal how the loads are transferred through the membranes to structural components such as the booms. The folding geometry and force progressions are described by function compositions of an inverse trigonometric function with the considered trigonometric function itself. If these functions are evaluated over several periods of the trigonometric function, a non-smooth oscillating curve occurs. Depending on the trigonometric function, these are often vividly described as zig-zag or sawtooth functions. The developed functions are applied to the Gossamer-1 design. The deployment geometry reveals a tendency that the loads are transferred along the catheti of the sail segments and therefore mainly along the boom axes. The load introduced by the spool deployment mechanism is described. By combining the deployment geometry with that load, a prediction of the deployment load progression is achieved. The mathematical description of the stowing and deployment geometry, as well as the forces inflicted by the mechanism provides an understanding of how exactly the membrane deploys and through which edges the deployment forces are transferred. The mathematical analysis also gives an impression of sensitive parameters that could be influenced by manufacturing tolerances or unsymmetrical deployment of the sail segments. While the mathematical model was applied on the design of the Gossamer-1 hardware, it allows an analysis of other geometries. This is of particular interest as Gossamer-1 investigated deployment technology on a relatively small scale of 5m×5m , while the currently considered solar sail missions require sails that are about one order of magnitude bigger.

Item URL in elib:https://elib.dlr.de/114145/
Document Type:Article
Title:A stowing and deployment strategy for large membrane space systems on the example of Gossamer-1
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:June 2017
Journal or Publication Title:Advances in Space Research
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1345-1362
Keywords:Gossamer-1; Gossamer structures; Deployable structures; Solar sailing; Controlled deployment
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):Huge Solar Array (old)
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Mechanic and Thermal Systems
Deposited By: Seefeldt, Patric
Deposited On:18 Sep 2017 11:53
Last Modified:06 Sep 2019 15:27

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