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  • 1
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    Recent Progress in Materials Selection and Characterizations for Ultra Long Duration Balloon (ULDB) Missions (2000)
    In:  Other Sources
    Details
    Publication Date: 2019-07-17
    Description: The development and characterization of materials suitable for ultra long duration balloon flights has recently been the focus of the materials R&D efforts for the NASA balloon program. Although basic materials selection criteria is similar to those used for conventional balloon missions, additional considerations related to balloon design, fabrication, durability, environmental effects, and cost must also be considered. Among these, the highest impact on material selection is, related to the design shape of the balloon. Work done by independent researchers indicate that for pumpkin type balloons, the load-carrying member is the tendon rather than the structural envelope. This in turn lowers the strength requirements on the envelope material to a large extent. Several materials and material combinations were explored for both design systems. This paper will present the progress made to date in the selection and characterization of these materials and the technical challenges remaining to be overcome,
    Keywords: Chemistry and Materials (General)
    Type: COSPAR2000; Jan 01, 2000; Warsaw,; Poland
    Format: text
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  • 2
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    National Educators' Workshop: Update 2001: Standard Experiments in Engineering, Materials Science, and Technology (2002)
    In:  CASI
    Details
    Publication Date: 2019-08-13
    Description: This document contains a collection of experiments presented and demonstrated at the National Educators' Workshop: Update 2001 held in College Park, Maryland, October 14-17, 2001.
    Keywords: Chemistry and Materials (General)
    Type: NASA/CP-2002-211735 , NAS 1.55:211735 , L-18193 , National Educators' Workshop: Update 2001 Standard Experiments in Engineering, Materials Science, and Technology; NASA/CP-2002-211735|National Educators'' Workshop: Update 2001: Standard Experiments in Engineering, Materials Science, and Technology; Oct 14, 2001 - Oct 17, 2001; College Park, MD; United States
    Format: application/pdf
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