Structural Evaluation of Candidate Space Shuttle Thermal Protection Systems PDF Download
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Author:
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Languages : en
Pages : 74
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Author:
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ISBN:
Category :
Languages : en
Pages : 74
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Author:
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Category :
Languages : en
Pages : 76
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Author:
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Category :
Languages : en
Pages : 70
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Author:
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Category :
Languages : en
Pages : 742
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Author:
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Category : Aeronautics
Languages : en
Pages : 704
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Author: Jerry G. Williams
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Category : Space shuttles
Languages : en
Pages : 48
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Structural tests were conducted on thermal protection system (TPS) including LI 900 and LI 2200 tiles and .41 cm (.16 in) and .23 cm (.09 in) thick strain isolation pads (SIP). In addition, the bond surface of selected tiles was densified to obtain improved strength. Four basic types of experiments were conducted including tension tests, substrate mismatch (initial imperfection) tests, tension loads eccentrically applied, and pressure loads applied rapidly to the tile top surface. A small initial imperfection mismatch (2.29 m (90 in.) spherical radius on the substrate) did not influence significantly the ultimate failure strength. Densification of the tile bond region improved the strength of TPS constructed both of LI 900 tile and of LI 2200 tile. Pressure shock conditions studied did not significantly affect the TPS strength.
Author: National Aeronaut Administration (Nasa)
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Category :
Languages : en
Pages : 70
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A technology review and assessment of modeling and analysis efforts underway in support of a safe return to flight of the thermal protection system (TPS) for the Space Shuttle external tank (ET) are summarized. This review and assessment effort focuses on the structural modeling and analysis practices employed for ET TPS foam design and analysis and on identifying analysis capabilities needed in the short-term and long-term. The current understanding of the relationship between complex flight environments and ET TPS foam failure modes are reviewed as they relate to modeling and analysis. A literature review on modeling and analysis of TPS foam material systems is also presented. Finally, a review of modeling and analysis tools employed in the Space Shuttle Program is presented for the ET TPS acreage and close-out foam regions. This review includes existing simplified engineering analysis tools are well as finite element analysis procedures. Knight, Norman F., Jr. and Nemeth, Michael P. and Hilburger, Mark W. Langley Research Center NASA/TM-2004-213256/PT2, L-19044/PT2 EXTERNAL TANKS; SPACE SHUTTLES; THERMAL PROTECTION; FOAMS; FAILURE MODES; FINITE ELEMENT METHOD; STRUCTURAL ANALYSIS
Author: Donald M. Curry
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Category :
Languages : en
Pages : 24
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Author:
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Category :
Languages : en
Pages : 16
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Author: United States. Congress. Senate. Committee on Aeronautical and Space Sciences
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Category :
Languages : en
Pages : 1870
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