Download or read book Space Radiator Study written by R. J. Denington and published by . This book was released on 1963 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design techniques are presented for condenser radiators for condensing mercury, sodium, potassium, and rubidium vapors for Rankine cycle space power plants. Included in the design techniques are radiation heat transfer, fluid mechanics, meteoroid protection and materials considerations, with the fluid mechanics stability aspects emphasized. Parametric data for large alkali metal condenser radiators relating geometry to weight and area are presented. Tests were conducted with water, sodium, potassium, and rubidium to investigate flow regime and stability in vertical up flow condensing. A correlation is presented for predicting the transition from a stable annular film flow to a slugging regime. Techniques for estimating pressure drop and inventory are provided. Condensing heat transfer coefficients for potassium and rubidium are measured and found to vary from 200 to 4000 Btu/hr sq. ft. F at relatively low velocities and pressures. This report summarizes the recommended design procedures, parametric data and the experimental details.

Download or read book Design considerations for lightweight space radiators based on fabrication and test experience with a carboncarbon composite prototype heat pipe written by and published by DIANE Publishing. This book was released on with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Laminar Flow Studies of a Low temperature Space Radiator Model Using D shaped Tubes written by Theodore C. Cintula and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Test results of a low-temperature space radiator model are presented. Radiator performance is evaluated with a low-thermal-conductivity fluid in laminar flow in D-shaped cross-section tubes. The test covered a Reynolds number range from 50 to 4500 and a fluid temperature range from 294 to 414 K (70 to 286 F). For low-temperature radiators, the fluid-to-surface temperature differential was predominately influenced by fluid temperature in laminar flow. Heat transfer and pressure drop for the radiator tube could be predicted within engineering accuracy from existing correlations.

Download or read book Review of Advanced Radiator Technologies for Spacecraft Power Systems and Space Thermal Control written by Albert J. Juhasz and published by . This book was released on 1994 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ALSEP Termination Report written by James R. Bates and published by . This book was released on 1979 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Heat rejection Characteristics of Space Radiator Panels Utilizing Shared Fins written by Mario A. Colaluca and published by . This book was released on 1966 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research and Technology Program Digest Flash Index written by and published by . This book was released on 1967 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Radiators for Space Nuclear Power Systems written by Roy W. Blanton and published by . This book was released on 1964 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1967-10 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Considerations for Lightweight Space Radiators Based on Fabrication and Test Experience with a Carbon carbon Composite Prototype Heat Pipe written by Albert J. Juhasz and published by DIANE Publishing. This book was released on 1998 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses the design implications for spacecraft radiators made possible by the successful fabrication and proof-of-concept testing of a graphite-fiber-carbon-matrix composite (i.e. carbon-carbo (C-C)) heat pipe. The prototype heat pipe, or space radiator element, consists of a C-C composite shell with integrally woven fins. It has a thin-walled furnace-brazed metallic (Nb-1%Zr) liner with end caps for containment of the potassium working fluid. A short extension of this liner, at increased wall thickness beyond the C-C shell, forms the heat pipe evaporator section which is in thermal contact with the radiator fluid that needs to be cooled. From geometric and thermal transport properties of the C-C composite heat pipe tested, a specific radiator mass of 1.45 kg/m2 can be derived. This is less than one-fourth the specific mass of present day satellite radiators. The report also discusses the advantage of segmented space radiator designs utilizing heat pipe elements, or segments, in their survivability to micrometeoroid damage. This survivability is further raised by the use of condenser sections with attached fins, which also improve the radiation heat transfer rate. Since the problem of heat radiation from a fin does not lend itself to a closed analytical solution, a derivation of the governing differential equation and boundary conditions is given in appendix A, along with solutions for rectangular and parabolic fin profile geometries obtained by use of a finite difference computer code written by the author.

Download or read book Transient Analysis of Fin tube Space Radiator Systems written by Larry J. Moriarty and published by . This book was released on 1966 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Review of Advanced Radiator Technologies for Spacecraft Power Systems and Space Thermal Control written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-10-19 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: A two-part overview of progress in space radiator technologies is presented. The first part reviews and compares the innovative heat-rejection system concepts proposed during the past decade, some of which have been developed to the breadboard demonstration stage. Included are space-constructable radiators with heat pipes, variable-surface-area radiators, rotating solid radiators, moving-belt radiators, rotating film radiators, liquid droplet radiators, Curie point radiators, and rotating bubble-membrane radiators. The second part summarizes a multielement project including focused hardware development under the Civil Space Technology Initiative (CSTI) High Capacity Power program carried out by the NASA Lewis Research Center and its contractors to develop lightweight space radiators in support of Space Exploration Initiative (SEI) power systems technology. Juhasz, Albert J. and Peterson, George P. Glenn Research Center RTOP 583-02-21...

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1962 with total page 1166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Spacecraft Thermal Control Handbook written by David G. Gilmore and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation This is a revised and updated of (1994) and has been expanded to discuss interplanetary spacecraft as well as Earth- orbiting satellites. The work is presented as a compendium of corporate knowledge in the field of thermal control of uncrewed spacecraft and was written for thermal engineers of a range of experience levels. After discussing general issues and historical design approaches chapters examine current thermal control hardware, the thermal design and testing process, and emerging thermal technologies. Annotation c. Book News, Inc., Portland, OR (booknews.com).

Download or read book Introduction to Spacecraft Thermal Design written by Eric Silk and published by Cambridge University Press. This book was released on 2020-07-09 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: Develop a fundamental understanding of heat transfer analysis techniques as applied to earth based spacecraft with this practical guide. Written in a tutorial style, this essential text provides a how-to manual tailored for those who wish to understand and develop spacecraft thermal analyses. Providing an overview of basic heat transfer analysis fundamentals such as thermal circuits, limiting resistance, MLI, environmental thermal sources and sinks, as well as contemporary space based thermal technologies, and the distinctions between design considerations inherent to room temperature and cryogenic temperature applications, this is the perfect tool for graduate students, professionals and academic researchers.

Download or read book NASA Technical Note written by and published by . This book was released on 1965 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: