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  • *Ecosystem  (1)
  • Life and Medical Sciences
  • Spacecraft Design, Testing and Performance
  • 2020-2024
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  • 2006  (2)
  • 1
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    Ecology. Globalization, roving bandits, and marine resources (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-03-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berkes, F -- Hughes, T P -- Steneck, R S -- Wilson, J A -- Bellwood, D R -- Crona, B -- Folke, C -- Gunderson, L H -- Leslie, H M -- Norberg, J -- Nystrom, M -- Olsson, P -- Osterblom, H -- Scheffer, M -- Worm, B -- New York, N.Y. -- Science. 2006 Mar 17;311(5767):1557-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Natural Resources Institute, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada. berkes@cc.umanitoba.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16543444" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biodiversity ; *Commerce ; *Conservation of Natural Resources ; *Ecosystem ; *Fisheries ; Food Chain ; *Internationality ; Public Policy ; Sea Urchins ; *Seawater
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 2
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    Structural Analysis and Testing of the Inflatable Re-entry Vehicle Experiment (IRVE) (2006)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The Inflatable Re-entry Vehicle Experiment (IRVE) is a 3.0 meter, 60 degree half-angle sphere cone, inflatable aeroshell experiment designed to demonstrate various aspects of inflatable technology during Earth re-entry. IRVE will be launched on a Terrier-Improved Orion sounding rocket from NASA s Wallops Flight Facility in the fall of 2006 to an altitude of approximately 164 kilometers and re-enter the Earth s atmosphere. The experiment will demonstrate exo-atmospheric inflation, inflatable structure leak performance throughout the flight regime, structural integrity under aerodynamic pressure and associated deceleration loads, thermal protection system performance, and aerodynamic stability. Structural integrity and dynamic response of the inflatable will be monitored with photogrammetric measurements of the leeward side of the aeroshell during flight. Aerodynamic stability and drag performance will be verified with on-board inertial measurements and radar tracking from multiple ground radar stations. In addition to demonstrating inflatable technology, IRVE will help validate structural, aerothermal, and trajectory modeling and analysis techniques for the inflatable aeroshell system. This paper discusses the structural analysis and testing of the IRVE inflatable structure. Equations are presented for calculating fabric loads in sphere cone aeroshells, and finite element results are presented which validate the equations. Fabric material properties and testing are discussed along with aeroshell fabrication techniques. Stiffness and dynamics tests conducted on a small-scale development unit and a full-scale prototype unit are presented along with correlated finite element models to predict the in-flight fundamental mod
    Keywords: Spacecraft Design, Testing and Performance
    Type: AIAA Paper 2006-1699 , 47th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference; May 01, 2006 - May 04, 2006; Newport, RI; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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