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ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (688 download)
Download or read book Verification of a 2 KWe Closed-Brayton-cycle Power Conversion System Mechanical Dynamics Model written by and published by . This book was released on 2005 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721789665
Total Pages : 36 pages
Book Rating : 4.7/5 (896 download)
Download or read book Design and Off-Design Performance of 100 Kwe-Class Brayton Power Conversion Systems written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Glenn Research Center in-house computer model Closed Cycle Engine Program (CCEP) was used to explore the design trade space and off-design performance characteristics of 100 kWe-class recuperated Closed Brayton Cycle (CBC) power conversion systems. Input variables for a potential design point included the number of operating units (1, 2, 4), cycle peak pressure (0.5, 1, 2 MPa), and turbo-alternator shaft speed (30, 45, 60 kRPM). The design point analysis assumed a fixed turbine inlet temperature (1150 K), compressor inlet temperature (400 K), helium-xenon working-fluid molecular weight (40 g/mol), compressor pressure ratio (2.0), recuperator effectiveness (0.95), and a Sodium-Potassium (NaK) pumped-loop radiator. The design point options were compared on the basis of thermal input power, radiator area, and mass. For a nominal design point with defined Brayton components and radiator area, off-design cases were examined by reducing turbine inlet temperature (as low as 900 K), reducing shaft speed (as low as 50 percent of nominal), and circulating a percentage (up to 20 percent) of the compressor exit flow back to the gas cooler. The off-design examination sought approaches to reduce thermal input power without freezing the radiator. Johnson, Paul K. and Mason, Lee S. Glenn Research Center NASA/TM-2005-213626, E-15110
Author : Nasa Technical Reports Server (Ntrs)
Publisher : BiblioGov
ISBN 13 : 9781289258948
Total Pages : 26 pages
Book Rating : 4.2/5 (589 download)
Download or read book Design and Off-Design Performance of 100 Kwe-Class Brayton Power Conversion Systems written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NASA Glenn Research Center in-house computer model Closed Cycle Engine Program (CCEP) was used to explore the design trade space and off-design performance characteristics of 100 kWe-class recuperated Closed Brayton Cycle (CBC) power conversion systems. Input variables for a potential design point included the number of operating units (1, 2, 4), cycle peak pressure (0.5, 1, 2 MPa), and turbo-alternator shaft speed (30, 45, 60 kRPM). The design point analysis assumed a fixed turbine inlet temperature (1150 K), compressor inlet temperature (400 K), helium-xenon working-fluid molecular weight (40 g/mol), compressor pressure ratio (2.0), recuperator effectiveness (0.95), and a Sodium-Potassium (NaK) pumped-loop radiator. The design point options were compared on the basis of thermal input power, radiator area, and mass. For a nominal design point with defined Brayton components and radiator area, off-design cases were examined by reducing turbine inlet temperature (as low as 900 K), reducing shaft speed (as low as 50 percent of nominal), and circulating a percentage (up to 20 percent) of the compressor exit flow back to the gas cooler. The off-design examination sought approaches to reduce thermal input power without freezing the radiator.
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781721828159
Total Pages : 32 pages
Book Rating : 4.8/5 (281 download)
Download or read book Experimental Validation of a Closed Brayton Cycle System Transient Simulation written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-24 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Brayton Power Conversion Unit (BPCU) located at NASA Glenn Research Center (GRC) in Cleveland, Ohio was used to validate the results of a computational code known as Closed Cycle System Simulation (CCSS). Conversion system thermal transient behavior was the focus of this validation. The BPCU was operated at various steady state points and then subjected to transient changes involving shaft rotational speed and thermal energy input. These conditions were then duplicated in CCSS. Validation of the CCSS BPCU model provides confidence in developing future Brayton power system performance predictions, and helps to guide high power Brayton technology development. Johnson, Paul K. and Hervol, David S. Glenn Research Center NASA/CR-2006-214239, E-15485
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ISBN 13 :
Total Pages : 492 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1994 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (319 download)
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ISBN 13 :
Total Pages : 408 pages
Book Rating : 4.F/5 ( download)
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ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (3 download)
Download or read book Technology for Large Space Systems written by and published by . This book was released on 1990 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 1124 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Science and Astronautics
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ISBN 13 :
Total Pages : 1422 pages
Book Rating : 4.3/5 (91 download)
Download or read book Hearings written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1970 with total page 1422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 336 pages
Book Rating : 4.3/5 ( download)
Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1991 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 812 pages
Book Rating : 4.3/5 (91 download)
Download or read book Spaceflight Mechanics written by and published by . This book was released on 2003 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 646 pages
Book Rating : 4.3/5 (243 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1994 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Congress. House. Committee on Science and Astronautics
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ISBN 13 :
Total Pages : 804 pages
Book Rating : 4.:/5 (319 download)
Download or read book 1971 NASA Authorization written by United States. Congress. House. Committee on Science and Astronautics and published by . This book was released on 1970 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Total Pages : 1102 pages
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Download or read book International Aerospace Abstracts written by and published by . This book was released on 1993 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 710 pages
Book Rating : 4.3/5 (91 download)
Download or read book Large Space Structures & Systems in the Space Station Era written by and published by . This book was released on 1990 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 598 pages
Book Rating : 4.3/5 (91 download)
Download or read book Paper written by and published by . This book was released on 1988 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:
