Development of an inflatable space synthetic aperture radar

Lou, Michael; Feria, V. Alfonso; Huang, John

doi:10.2514/6.1998-2103

Cited by 13 publications

(4 citation statements)

References 2 publications

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“…One approach for achieving the necessary order-of-magnitude reduction in mass density is the use of thin film membrane material for the antenna aperture, along with lower-mass support structures. [4][5][6] Figure 4 shows an example of a membrane-based antenna. However, a system with less structural support is prone to surface deformation and errors.…”

Section: Enabling Technologiesmentioning

confidence: 99%

MeoSAR System Concepts & Technologies for Earth Remote Sensing

Chen

Moussessian

2004

Space 2004 Conference and Exhibit

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Next-generation interferometric synthetic aperture radar (InSAR) systems may provide the basis for establishing an earthquake-forecasting capability within a twenty-year time frame. Such systems would need to provide data with fine temporal resolution, so the system architecture would need to allow for wide-area coverage in order to minimize the effective interferometric repeat time. This paper discusses the coverage advantages associated with medium-Earth orbit (MEO) InSAR systems for observing geophysical phenomena. As MEO architectures dictate the need for large radar antennas, this paper also presents a discussion of advanced antenna technologies-and associated challenges-that might provide revolutionary decreases in the mass densities of large radar aperture antennas.

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Section: Enabling Technologiesmentioning

confidence: 99%

MeoSAR System Concepts & Technologies for Earth Remote Sensing

Chen

Moussessian

2004

Space 2004 Conference and Exhibit

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“…In Figure 3(a), the flattened tube has been subsequently folded into a concertina pattern. This folding has been used recently as part on an inflatable space synthetic aperture radar (SAR) (Lou, Feria and Huang, 1998). An alternative is to roll the flattened tube, as shown in Figure 3(b).…”

Section: The Use Of Triangulated Cylinders For 1nflatable Tubesmentioning

confidence: 99%

IUTAM-IASS Symposium on Deployable Structures: Theory and Applications

Pellegrino¹,

Guest²

2000

Solid Mechanics and Its Applications

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The fundamental questions arising in mechanics are: Why?, How?, and How much? The aim of this series is to provide lucid accounts written bij authoritative researchers giving vision and insight in answering these questions on the subject of mechanics as it relates to solids.The scope of the series covers the entire spectrum of solid mechanics. Thus it includes the foundation of mechanics; variational formulations; computational mechanics; statics, kinematics and dynamics of rigid and elastic bodies: vibrations of solids and structures; dynamical systems and chaos; the theories of elasticity, plasticity and viscoelasticity; composite materials; rods, beams, shells and membranes; structural control and stability; soils, rocks and geomechanics; fracture; tribology; experimental mechanics; biomechanics and machine design.The median level of presentation is the first year graduate student. Some texts are monographs defining the current state of the field; others are accessible to final year undergraduates; but essentially the emphasis is on readability and clarity.

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“…The mandrel extrusion, however, can be used only for in ating structural components having prismaticshapessuch as one-dimensionaltubes and is not applicable for other general shapes such as a torus or components of lenticular forms. Another example of controlled deployment has been used for the in atable space synthetic aperture radar, 3 in which the in atable structure is initially packaged by rolling. The latter scheme is perhaps the most common of the three concepts cited here.…”

Section: Deployment Conceptsmentioning

confidence: 99%

Simulation of deployment dynamics of inflatable structures

Salama

Kuo

Lou

1999

40th Structures, Structural Dynamics, and Materials Conference and Exhibit

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Analytical simulation of the in ation process of in atable structures is key to assessing their robust deployment in a space environment. Although the problem seems to be intractable, a simpli ed nite volume in ation model is developed, which allows discretized description of the gas ow, pressure variation, and resulting nonlinear large deformation throughout domains of the in atable structure. Simulation results are presented along with convergence studies, which provide insight into the deployment of three different packaging/deployment schemes: Z-unfolding, rollout, and extrusion of a cylindrical tube. The proposed in ation model is not limited to prismatic one-dimensional components and can be applied to in atable shapes with complex con gurations. As a validation of the numerical simulation, a laboratory experiment was conducted on the Z-folded con guration. Generally, good agreement in the overall in ation dynamics is observed between the analysis and experiment.

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Development of an inflatable space synthetic aperture radar

Cited by 13 publications

References 2 publications

MeoSAR System Concepts & Technologies for Earth Remote Sensing

MeoSAR System Concepts & Technologies for Earth Remote Sensing

IUTAM-IASS Symposium on Deployable Structures: Theory and Applications

Simulation of deployment dynamics of inflatable structures

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