Synchronous Deployed Solar Sail Subsystem Design Concept

Banik, Jeremy; Murphey, Thomas W.

doi:10.2514/6.2007-1837

Cited by 18 publications

(7 citation statements)

References 7 publications

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“…[1][2][3][4][5][6][7] One of the very successful solar sail mission launched to date is IKAROS, as illustrated in Fig. 1, which was developed by Japan Aerospace Exploration Agency (JAXA).…”

Section: A Background and Objectivementioning

confidence: 99%

Repeatability of Stored Configuration of a Large Solar Sail with Non-negligible Thickness

坂本

Sakamoto

門西

et al. 2013

54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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This paper proposes a method to store a large solar-sail membrane while ensuring repeatability of its stored configuration. The feasibility and effectiveness of the method is verified through a series of sail-storage experiments using 10m-size membranes. Large membranes used as a solar sail should be stored compactly to save the launch volume; in addition, their stored configuration should be sufficiently predictable in order to guarantee reliable deployment in orbit. However, it is difficult to store a large membrane compactly with sufficient repeatability because of the finite thickness of the membrane. This paper classifies the existing and proposed folding patterns that can consider the finite-thickness of membranes. This paper then demonstrates the feasibility of "bulging roll-up" experimentally, and evaluates the repeatability of its stored configuration quantatively.

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“…[1][2][3][4][5][6][7] One of the very successful solar sail mission launched to date is IKAROS, as illustrated in Fig. 1, which was developed by Japan Aerospace Exploration Agency (JAXA).…”

Section: A Background and Objectivementioning

confidence: 99%

Repeatability of Stored Configuration of a Large Solar Sail with Non-negligible Thickness

坂本

Sakamoto

門西

et al. 2013

54th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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“…6 is designed to unwrap in a strictly deterministic manner which stores the sail folded and flat against the inner hub. 7 During deployment each tensioning line alternately defines a peak or valley in the sail topology. The result is a final surface that is significantly corrugated.…”

Section: Micro-solar-sail Thrust Model Applicationmentioning

confidence: 99%

Secondary Solar Reflection Thrust Effects on Non-Planar Solar Sail Topologies

Howard

Banik

2009

50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

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The classic first-order thrust approximation for solar sails is analytically extended to include the effects of secondary reflections and generalized in a practical Finite Element Model (FEM) based routine. Examination and inclusion of secondary reflection forces are shown to grow increasingly non-trivial as the deformation becomes more extreme. The approach taken herein does not address the "billow" deformation of a sail, rather the focus is on heavily corrugated sail topologies such as those present during the unfolding of a zfolded membrane. First, a second-order thrust estimation for a simple corrugated section is developed. These results are then used to verify an FEM based thrust estimation for a similar generic surface geometry that does not consider any elastic membrane behavior. Finally, the FEM approach is used in characterizing the thrust production of a specific micro-solar sail design with severely corrugated topology. Results show that secondary reflections can have a significant effect on the thrust and control of the sail depending on the craft orientation and the ability of the sail structure to achieve the ideal flat surface.

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“…Examples of gossamer technology which has flown in space is the ECHO I sphere, which launched in 1960 to serve as a communications reflector, 1 or the L'Garde inflatable antenna, which was launched from the Space Shuttle in 1996. 2 Examples of current research on gossamer structures is solar sail technology, 3 inflatable solar arrays, 4 and space habitats. 5 A subset of gossamer structures is inflatable gossamer structures.…”

Section: Introductionmentioning

confidence: 99%

Electron Flux Deflection Experiments with Coulomb Gossamer Structures

Stiles¹,

Schaub²

2012

53rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

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This paper explores using Electrostatically Inflated Membrane Structures (EIMS) in a plasma flow. In particular, experiments are presented illustrating EIMS inflation in an electron flux while studying the structural stability. EIMS consists of conducting membranes coupled with active charge emission to provide an inflationary electrostatic pressure. Of interest is how the light-weight membrane charge distribution will interact with an electron flux, and will the deflection of this charge cause a structural response. Vacuum chamber experiments are performed with electron flux energies up to 5keV, while the membranes are charged using an external power supply up to 10kV. The experiments show that EIMS will remain inflated in the presence of this low-energy electron flux, which provides critical insight into developing Low-Earth Orbit EIMS experiments. At particular EIMS voltages and electron flux energy levels, unknown membrane vibrations are observed. Studying the experimental setup, these vibrations are not due to variations in the power supply or the electron flux, nor are they due to the momentum exchange of charge deflection. Rather, it is postulated these vibrations are due to the charge flux causing local membrane charge distribution changes. As the membrane structure inflation pressure is changed, the shape responds, and causes the observed sustained vibration. Having identified this phenomena is important when considering implying EIMS in a space environment.

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Synchronous Deployed Solar Sail Subsystem Design Concept

Cited by 18 publications

References 7 publications

Repeatability of Stored Configuration of a Large Solar Sail with Non-negligible Thickness

Repeatability of Stored Configuration of a Large Solar Sail with Non-negligible Thickness

Secondary Solar Reflection Thrust Effects on Non-Planar Solar Sail Topologies

Electron Flux Deflection Experiments with Coulomb Gossamer Structures

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