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  • 1
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    Solid propellants. (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: The basic principles underlying propulsion by rocket motor are examined together with the configuration of a solid propellant motor. Solid propellants and their preparation are discussed, giving attention to homogeneous propellants, composite propellants, energetic considerations in choosing a solid propellant, the processing of composite propellants, and some examples of new developments. The performance of solid propellants is investigated, taking into account characteristics velocity, the specific impulse, and performance calculations. Aspects of propellant development considered include nonperformance requirements for solid propellants, the approach to development, propellant mechanical properties, and future trends.
    Keywords: PROPELLANTS
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Specialist conference: Propellant pressing (1974)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Keywords: GENERAL
    Type: APL Bull. of the 20th Interagency Solid Propulsion Meeting, Vol. 4; p 427-437
    Format: text
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  • 3
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    Lipid-absorbing Polymers (1973)
    In:  CASI
    Details
    Publication Date: 2016-03-01
    Description: The removal of bile acids and cholesterol by polymeric absorption is discussed in terms of micelle-polymer interaction. The results obtained with a polymer composed of 75 parts PEO and 25 parts PB plus curing ingredients show an absorption of 305 to 309%, based on original polymer weight. Particle size effects on absorption rate are analyzed. It is concluded that crosslinked polyethylene oxide polymers will absorb water, crosslinked polybutadiene polymers will absorb lipids; neither polymer will absorb appreciable amounts of lipids from micellar solutions of lipids in water.
    Keywords: BIOSCIENCES
    Type: JPL Quart. Tech. Rev.; Vol. 2; No. 4; p 1-6
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Investigation of indigenous water, salt and soil for solar ponds (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The existence of salt-gradient solar ponds in nature is a strong indication that the successful exploitation of this phenomenon must account adequately for the influences of the local setting. Sun, weather and other general factors are treated elsewhere. This paper deals with water, salt, and soil. A general methodology for evaluating and, where feasible, adjusting the effects of these elements is under development. Eight essential solar pond characteristics have been identified, along with a variety of their dependencies upon properties of water, salt and soil. The comprehensive methodology, when fully developed, will include laboratory investigation in such diverse areas as brine physical chemistry, light transmission, water treatment, brine-soil interactions, sealants, and others. With the Salton Sea solar pond investigation as an example, some methods under development will be described.
    Keywords: ENERGY PRODUCTION AND CONVERSION
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  • 5
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    Material Selection Considerations for Solar Ponds (1984)
    In:  CASI
    Details
    Publication Date: 2014-09-13
    Description: Among the various candidate materials tested, stainless steel shows the best potential for applications as heat exchanger components in solar ponds. Even stainless steel may lead to pitting type of corrosion. Weight loss measurements are probably unsatisfactory for corrosion evaluation in solar pond situations. Also included are the results from the potentiodynamic anodic polarization analysis, corrosion rate calculation via corrosion behavior diagrams, and immersion weight loss measurements.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: Site-Specific Res. Conducted in Support of the Salton Sea Solar Pond Proj., FY 1982 Rept.; 16 p
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    NASA TECHNICAL REPORTS
  • 6
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    Sterilized solid-propellant rocket motors for mars landing missions revision no. 1 (1965)
    In:  CASI
    Details
    Publication Date: 2019-05-24
    Description: Sterile solid propellant motor for planetary and lunar landings - chemical sterilization, heat sterilizable propellants, and silicone propellant development
    Keywords: PROPULSION SYSTEMS
    Type: NASA-CR-64351 , JPL-TR-32-725
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  • 7
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    Site-Specific Research Conducted in Support of the Salton Sea Solar Pond Project - FY 1982 Report (1984)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The design and operation of a salt-gradient solar pond power plant at the Salton Sea presents problems not encountered at small research ponds that were built in the United States. The specific characteristics of the Salton Sea site and the desire to construct the pond using the local clay as a sealant represent major deviations from previous solar pond experience. The site-specific research in support of the plant design is described. The research activity included validation of the spectrophotometric light transmission measurement technique, a search for options for clarifying the turbid and colored water of the Salton Sea, development of water clarification specifications in terms common to industry practice, quantification of gas production from microbiological reactions in the ground, a determination of the combined effects of temperature and salinity on the permeation of the local clays, and a preliminary evaluation of material corrosion.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-174182 , JPL-PUB-84-68 , NAS 1.26:174182 , DOE/SF-11592/1
    Format: application/pdf
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  • 8
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    Solid propellant motor (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A case bonded end burning solid propellant rocket motor is described. A propellant with sufficiently low modulus to avoid chamber buckling on cooling from cure and sufficiently high elongation to sustain the stresses induced without cracking is used. The propellant is zone cured within the motor case at high pressures equal to or approaching the pressure at which the motor will operate during combustion. A solid propellant motor with a burning time long enough that its spacecraft would be limited to a maximum acceleration of less than 1 g is provided by one version of the case bonded end burning solid propellant motor of the invention.
    Keywords: SPACECRAFT PROPULSION AND POWER
    Format: application/pdf
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  • 9
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    Solar pond power plant feasibility study for Davis, California (1982)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The feasibility of constructing a solar pond power plant at Davis, California was studied. Site visits, weather data compilation, soil and water analyses, conceptual system design and analyses, a material and equipment market survey, conceptual site layout, and a preliminary cost estimate were studied. It was concluded that a solar pond power plant is technically feasible, but economically unattractive. The relatively small scale of the proposed plant and the high cost of importing salt resulted in a disproportionately high capital investment with respect to the annual energy production capacity of the plant. Cycle optimization and increased plant size would increase the economical attractiveness of the proposed concept.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-168819 , JPL-PUB-82-16 , JPL-5107-4 , NAS 1.26:168819
    Format: application/pdf
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  • 10
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    Modeling of polymer networks for application to solid propellant formulating (1979)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Methods for predicting the network structural characteristics formed by the curing of pourable elastomers were presented; as well as the logic which was applied in the development of mathematical models. A universal approach for modeling was developed and verified by comparison with other methods in application to a complex system. Several applications of network models to practical problems are described.
    Keywords: PROPELLANTS AND FUELS
    Type: NASA-CR-158788 , JPL-PUB-79-10
    Format: application/pdf
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