Download or read book An Experimental and Analytical Investigation of Stirling Space Power Converter Heater Head written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-24 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: NASA has identified the Stirling power converter as a prime candidate for the next generation power system for space applications requiring 60000 hr of operation. To meet this long-term goal, several critical components of the power converter have been analyzed using advanced structural assessment methods. Perhaps the most critical component, because of its geometric complexity and operating environment, is the power converter's heater head. This report describes the life assessment of the heater head which includes the characterization of a viscoplastic material model, the thermal and structural analyses of the heater head, and the interpolation of fatigue and creep test results of a nickel-base superalloy, Udimet 720 LI (Low Inclusions), at several elevated temperatures for life prediction purposes. Abdul-Aziz, Ali and Bartolotta, Paul and Tong, Mike and Allen, Gorden Glenn Research Center NAS3-25266; NAS3-25776; RTOP 590-13-11
Download or read book An Experimental and Analytical Investigation of Stirling Space Power Converter Heater Head written by and published by . This book was released on 1995 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA GRC Technology Development Project for a Stirling Radioisotope Power System written by Lanny G. Thieme and published by . This book was released on 2000 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long Term Durability Analysis of a 100 000 Hr Stirling Power Converter Heater Head NASA written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Collection of Technical Papers written by Conference and published by . This book was released on 2000 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reliability Based Life Assessment of Stirling Convertor Heater Head 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: Onboard radioisotope power systems being developed and planned for NASA's deep-space missions require reliable design lifetimes of up to 14 yr. The structurally critical heater head of the high-efficiency Stirling power convertor has undergone extensive computational analysis of operating temperatures, stresses, and creep resistance of the thin-walled Inconel 718 bill of material. A preliminary assessment of the effect of uncertainties in the material behavior was also performed. Creep failure resistance of the thin-walled heater head could show variation due to small deviations in the manufactured thickness and in uncertainties in operating temperature and pressure. Durability prediction and reliability of the heater head are affected by these deviations from nominal design conditions. Therefore, it is important to include the effects of these uncertainties in predicting the probability of survival of the heater head under mission loads. Furthermore, it may be possible for the heater head to experience rare incidences of small temperature excursions of short duration. These rare incidences would affect the creep strain rate and, therefore, the life. This paper addresses the effects of such rare incidences on the reliability. In addition, the sensitivities of variables affecting the reliability are quantified, and guidelines developed to improve the reliability are outlined. Heater head reliability is being quantified with data from NASA Glenn Research Center's accelerated benchmark testing program. Shah, Ashwin R. and Halford, Gary R. and Korovaichuk, Igor Glenn Research Center NASA/TM-2004-213077, E-14553
Download or read book Technology Development for a Stirling Radioisotope Power System written by and published by . This book was released on 2000 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long term Durability Analysis of a 100 000 Hr Stirling Power Convertor Heater Head written by Paul A. Bartolotta and published by . This book was released on 2000 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technology Development for a Stirling Radioisotope Power System for Deep Space Missions written by and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and analytical investigations on nuclear reactor safety severe accident phenomena and severe accident mitigation of nuclear power plants written by Yapei Zhang and published by Frontiers Media SA. This book was released on 2023-02-02 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Random Thermal Spikes on Stirling Convertor Heater Head Reliability written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-21 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Onboard radioisotope power systems being developed to support future NASA exploration missions require reliable design lifetimes of up to 14 yr and beyond. The structurally critical heater head of the high-efficiency developmental Stirling power convertor has undergone extensive computational analysis of operating temperatures (up to 650 C), stresses, and creep resistance of the thin-walled Inconel 718 bill of material. Additionally, assessment of the effect of uncertainties in the creep behavior of the thin-walled heater head, the variation in the manufactured thickness, variation in control temperature, and variation in pressure on the durability and reliability were performed. However, it is possible for the heater head to experience rare incidences of random temperature spikes (excursions) of short duration. These incidences could occur randomly with random magnitude and duration during the desired mission life. These rare incidences could affect the creep strain rate and therefore the life. The paper accounts for these uncertainties and includes the effect of such rare incidences, random in nature, on the reliability. The sensitivities of variables affecting the reliability are quantified and guidelines developed to improve the reliability are outlined. Furthermore, the quantified reliability is being verified with test data from the accelerated benchmark tests being conducted at the NASA Glenn Research Center. Shah, Ashwin R. and Korovaichuk, Igor and Halford, Gary R. Glenn Research Center NASA/TM-2004-213368, AIAA Paper 2004-5507, E-14836
Download or read book LONG TERM DURABILITY ANALYSIS OF A 100 000 HR STIRLING POWER CONVERTER HEATER HEAD NASA TM 2000 210213 SEP 7 2000 written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 1470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Technology and Applications International Forum 2000 written by Mohamed S. El-Genk and published by American Institute of Physics. This book was released on 2000-01-27 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings document the opportunities for space science onboard the international space station (ISS), currently under construction by an international consortium. These proceedings include the latest on the construction of and payload operations on the ISS; human physiology in space; fundamental physics; engineering research and technology development; thermal control technologies for future spacecraft; propulsion technology for interstellar precursor missions; breakthrough propulsion physics; next generation commercial/civil space transportation and reusable launch systems technology; spaceport development; potential manned and unmanned space missions; and advances in energy conversion technologies. STAIF-2000 is co-sponsored by NASA Headquarters and Field Centers, DOE, and The Boeing Company, in cooperation with major professional societies. Government aerospace industry and universities exhibit and present papers.
Download or read book Evaluation of Candidate Materials for a High Temperature Stirling Convertor Heater Head written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Department of Energy (DOE) and NASA have identified Stirling Radioisotope Generators (SRG) as a candidate power system for use on long-duration, deep-space science missions and Mars rovers. One of the developments planned for an upgraded version of the current SRG design is to achieve higher efficiency by increasing the overall operating temperature of the system. Currently, the SRG operates with a heater head temperature of 650 C and is fabricated from the nickel base superalloy 718. This temperature is at the limit of Alloy 718's capability, and any planned increase in temperature will be contingent on identifying a more capable material from which to fabricate the heater head. To this end, an assessment of material candidates was performed assuming a range of heater head temperatures. The chosen alternative material candidates will be discussed, along with the development efforts needed to ensure that these materials can meet the demanding system requirements of long-duration operation in hostile environments. Bowman, Randy and Ritzert, Frank and Freedman, Marc Glenn Research Center NASA/TM-2003-212734, E-14259
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Research Technology 2004 written by and published by DIANE Publishing. This book was released on with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
