1 edition of Environmental Disturbance Modeling for Large Inflatable Space Structures found in the catalog.
Environmental Disturbance Modeling for Large Inflatable Space Structures
by Storming Media
Written in English
|The Physical Object|
The Air Force Institute of Technology is in the process of designing a space shuttle experiment designated as the Rigidized Inflatable Get-Away-Special Experiment (RIGEX) to study the effects of microgravity on the deployment of inflatable rigidizable composite structures. Once in space, the experiment is designed to inflate and rigidize three. This paper gives a brief overview of the develop ment of Precision Inflatable Space Structures during the last three decades or so. The authors cover the highlights of the work that has been done mainly in the U.S. during this time interval. This includes some of the characteristics of Space Inflatables, lessons learned in both DOD and NASA programs, current development efforts, and future.
STRUCTURAL BEHAVIOR OF INFLATABLE, REINFORCED, BRAIDED, TUBULAR MEMBERS By Joshua David Clapp B.S. University of Maine, M.S. University of Maine, A DISSERTATION Submitted in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy (in Civil Engineering) The Graduate School The University of Maine August, Inflatable structures offer the potential of compactly stowing lightweight structures, which assume a fully deployed state in space. An important category of space inflatables are cylindrical booms, which may form the structural members of trusses or the support structure for solar sails. Two critical and interdependent aspects of designing inflatable cylindrical booms for space applications.
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Environmental Disturbance Modeling for Inflatable Space Structures. Gregory Agnes and. This study examines the environmental disturbances which act upon large, orbiting structures.
Calculations are made on a base model to relate the torques generated by these disturbances to the. Therefore, inflatable structures offer improvements in performance to certain types of spacecraft components. Environmental factors induce surface errors on large inflatable structures, though.
This degrades performance, especially for inflatable antennas. To reduce this degradation, active and passive control systems can be used to sense errors and control the shape of the antenna. One Author: Craig M.
Whittinghill. American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA In this paper we develop a mathematical model of the dynamics for an inflatable space reflector, which can be used to design a controller for the shape of the inflatable structure.
Inflatable structures have very nice properties, suitable for aerospace applications. We can construct e.g. a huge light weight reflector for a satellite which. Active Control of Flexible Structures deals with vibration control for large-scale flexible structures which are, or may be, subject to a broadband primary vibration field.
The authors present a complete rationale for solving problems of vibration, from experimental structural characterization to. A modular inflatable structure consisting of thin, composite membranes is presented for use in a lunar base.
Results from a linear elastic analysis of the structure indicate that it is feasible in the lunar environment. Further analysis requires solving nonlinear equations and accurately specifying the geometries of the structural members. Modeling for control of an inflatable space reflector, the linear 1-D case Voß, T., Scherpen, J.
& van der Schaft, A. J.,Proceedings of the 18th International Symposium on Mathematical Theory of Networks. University of Groningen, Research Institute of Technology and Management, 12 p. Space inflatable and rigidizable structures technology is one of the emerging technologies that can potentially revolutionize the design and applications of large space structural systems.
In the last two years, NASA and its industry and academia partners have made significant progress in addressing important technical challenges for the actual. A Researcher’s Guide to: Space Environmental Effects. This International Space Station (ISS) Researcher’s Guide is published by Space environmental threats to spacecraft components vary greatly, based Space-exposure damage to Hubble Space Telescope multilayer insulation.
Large radiation-induced cracks in the. The volume is organized into five topical areas including: the effects of space operations on the Earth's environment; the effects of spacecraft charging on space systems; the effects of space radiation on spacecraft systems; the interactions between the space environment and large dimension, high-power spacecraft; and the effects of the environment on the structural integrity of space vehicles.
Inflatable structures in space engineering Article in Journal of the International Association for Shell and Spatial Structures 41() December with Reads How we measure 'reads'.
Structural mechanics is the study of the mechanical behavior of solids and structures. Aerospace structures differ from other structures due to their high demands for performance and lightweight. Modern aerospace structures typically require the use of composite materials, advanced multifunctional materials and thin-walled constructions.
Membrane structures for space have been investigated since the ’s as an alternative to conventional structures . The ECHO balloon project by NASA in the ’s was  the first successful demonstration of inflatable membranes on a large scale. ECHO 1 and 2 were large orbiting spheres. The demand for large antennas in future space missions has increasingly stimulated the development of deployable membrane antenna structures owing to their light weight and small stowage volume.
However, there is little literature providing a comprehensive review and comparison of different membrane antenna structures. Abstract. In ecological networks, network robustness should be large enough to confer intrinsic robustness for tolerating intrinsic parameter fluctuations and environmental robustness for resisting environmental disturbances so that the phenotype stability of the ecological network (community stability) can be maintained, thus guaranteeing phenotype robustness.
Our laboratory is interested in the modeling of the deployment of the inflatable structure, i.e. the modeling of the interaction between the flow of the injected gas and the deformation of the membrane, and the self-contact of the membrane.
correlate to an analytical model. The ability to measure strain in inflatable structures is a challenge for NASA. Foil strain gages, for example, are commonplace on metallic structures testing, but are extremely difficult to interface with a fabric substrate.
New strain measuring techniques need to be developed for use with fabric structures. Materials being considered for use in thin-film applications of inflatable structures were exposed to a simulated space environment representing a 5-year Low Earth Orbit (LEO) and also to a 5-year.
Chapter 5. Modeling the Deployment of Inflatable Space Structures I. Introduction II. Review of Relevant Literature on Flexible Structure Deployment Modeling A. Deployment Modeling and Testing of Conventional Aerospace Structures B. Tethers: Extremely Large, Flexible Space Structures.
Inflatable space structures offer the prospect of compact stowed large light-weight structures, which can be inflated to their full dimensions once in space. After inflation the structures may be rigidised to ensure long term structural performance without the need to maintain the internal pressure.
Inflatable cylindrical booms are an important category of space inflatable, and often form .L.C. Hollaway, in Advanced Fibre-Reinforced Polymer (FRP) Composites for Structural Applications, The rigidised inflatable flexible continuum structure to support the solar collectors.
Inflatable structures were originally investigated in the early space programmes to reduce the weight and volume of onboard items and hence the cost of the space flight. Rather than focusing on a single disturbance type or event, long-term research has the luxury of focusing on the disturbance regime, the sum of all disturbances affecting an ecosystem in space and time (White and Jentsch ).
Grassland ecosystems, for example, are subject to fire, periodic drought, and intense periods of herbivory by ungulates, invertebrates, and numerous species .