Download or read book Optical Properties of Thermal Control Coatings After Weathering Simulated Ascent Heating and Simulated Space Radiation Exposure written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2019-01-19 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft radiators reject heat to their surroundings and coatings play an important role in this heat rejection. The coatings provide the combined optical properties of low solar absorptance and high infrared emittance. The coatings are applied to the radiator panel in a number of ways, including conventional spraying, plasma spraying, or as an applique. Not designed for a terrestrial weathering environment, the durability of spacecraft paints, coatings, and appliques upon exposure to weathering and subsequent exposure to ascent heating, solar wind, and ultraviolet radiation was studied. In addition to traditional aluminum panels, new isocyanate ester composite panels were exposed for a total of 90 days at the Atmospheric Exposure Site of Kennedy Space Center's (KSC) Beach Corrosion Facility for the purpose of identifying their durability to weathering. Selected panel coupons were subsequently exposed to simulated ascent heating, solar wind, and vacuum ultraviolet (UV) radiation to identify the effect of a simulated space environment on as-weathered surfaces. Optical properties and adhesion testing were used to document the durability of the paints, coatings, and appliques. Jaworske, Donald A. and Tuan, George C. and Westheimer, David T. and Peters, Wanda C. and Kauder, Lonny R. Glenn Research Center; Goddard Space Flight Center; Johnson Space Center NASA/TM-2008-215259, E-16525
Download or read book Evaluation of Thermal Control Coatings and Polymeric Materials Exposed to Ground Simulated Atomic Oxygen and Vacuum Ultraviolet Radiation written by R. R. Kamenetzky and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vacuum and Ultraviolet radiation Effects on Binders and Pigments for Spacecraft Thermal control Coatings written by Donald J. Progar and published by . This book was released on 1971 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents an evaluation of several silicone resin binders and powdered inorganic pigments for potential use in spacecraft thermal-control paint formulations. The pigments were selected on the basis of a hypothesis relating the heat of formation of a compound to the compound's resistance to ultraviolet-radiation-induced degradation. Reflectance measurements were made in situ to determine degradatiorna tes due to ultraviolet radiation. The tested polydimethylsiloxane resins were not significantly affected by long exposures to ultraviolet radiation. All the pigments, which were dispersed in a polydimethylsiloxane resin, were degraded by ultraviolet radiation as determined by an increase of solar absorptance. For the materials evaluated in this study, no evidence was found to indicate that pigments with high heats of formation were resistant to ultraviolet degradation.
Download or read book Evaluation of Reformulated Thermal Control Coatings in a Simulated Space Environment written by Cliff Cerbus and published by . This book was released on 1997 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Air Force Space and Missile Systems Center and Wright Laboratory Materials Directorate (WL/ML) sponsored an effort to reformulate and qualify Illinois Institute of Technology Research Institute (IITRI) spacecraft thermal control coatings. S13G/LO-1, Z-93, and YB-71 coatings were reformulated by IITRI because the potassium silicate binder, Sylvania PS-7, used in the coatings is no longer manufactured. Coatings utilizing the binder's replacement candidate, Kasil 2130, manufactured by The Philadelphia Quartz (PQ) Corporation, Baltimore, Maryland, were tested at the Materials Directorate's Space Combined Effects Primary Test and Research Equipment (SCEPTRE) Facility operated by the University of Dayton Research Institute (UDRI). The SCEPTRE Facility's simulated space environment consists of combined ultraviolet (UV) and electron exposure with in situ specimen reflectance measurements. A brief description of the effort at IITRI, a brief description of the SCEPTRE Facility, results and discussion from testing of the reformulated YB-71, S13G/LO-1, and Z-93 coatings in SCEPTRE and other organizations are presented.
Download or read book Effects of a Simulated Space Environment on Thermal Radiation Characteristics of Selected Balck Coatings written by William R. Wade and published by . This book was released on 1967 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Thermal Control Coatings and Polymeric Materials Exposed to Ground Simulated Atomic Oxygen and Vacuum Ultraviolet Radiation written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-06 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous thermal control and polymeric samples with potential International Space Station applications were evaluated for atomic oxygen and vacuum ultraviolet radiation effects in the Princeton Plasma Physics Laboratory 5 eV Neutral Atomic Oxygen Facility and in the MSFC Atomic Oxygen Drift Tube System. Included in this study were samples of various anodized aluminum samples, ceramic paints, polymeric materials, and beta cloth, a Teflon-impregnated fiberglass cloth. Aluminum anodizations tested were black duranodic, chromic acid anodize, and sulfuric acid anodize. Paint samples consisted of an inorganic glassy black paint and Z-93 white paint made with the original PS7 binder and the new K2130 binder. Polymeric samples evaluated included bulk Halar, bulk PEEK, and silverized FEP Teflon. Aluminized and nonaluminized Chemfab 250 beta cloth were also exposed. Samples were evaluated for changes in mass, thickness, solar absorptance, and infrared emittance. In addition to material effects, an investigation was made comparing diffuse reflectance/solar absorptance measurements made using a Beckman DK2 spectroreflectometer and like measurements made using an AZ Technology-developed laboratory portable spectroreflectometer. Kamenetzky, R. R. and Vaughn, J. A. and Finckenor, M. M. and Linton, R. C. Marshall Space Flight Center...
Download or read book Thermal and Radiative Property Measurement of Thermal control Coatings by Cyclic Radiation written by Ernie W. Spisz and published by . This book was released on 1971 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Study of Effects of Simulated Neutralized Solar Wind on White pigment Thermal Control Coatings written by and published by . This book was released on 1969 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Development of Thermal Radiative Surface Coatings for NASA Lewis Space Simulation Chamber written by John H. Baldrige and published by . This book was released on 1967 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of a Simulated Space Environment on Thermal Radiation Characteristics of Selected Black Coatings written by William R. Wade and published by . This book was released on 1967 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of a Simulated Space Environment on Thermal Radiation Characteristics of Selected Balck Coatings written by William R. Wade and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spacecraft Thermal Control Coatings References written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: The successful thermal design of spacecraft depends in part on a knowledge of the solar absorption and hemispherical emittance of the thermal control coatings used in and on the spacecraft. Goddard Space Flight Center has had since its beginning a group whose mission has been to provide thermal/optical properties data of thermal control coatings to thermal engineers. This handbook represents a summary of the data and knowledge accumulated over many years at GSFC. Kauder, Lonny Goddard Space Flight Center
Download or read book Production of High Purity Thermal Control Coatings written by Lionel J. Bailin and published by . This book was released on 1968 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methods, process controls, and equipment have been developed for preparing high purity inorganic-based thermal control coatings for spacecraft. Two pigments, ZrO2. SiO2 and LiAlSiO4, have been synthesized in the laboratory, optimized, and produced in multipound quantities. The effects of ionic impurities, synthesis, and pigment purification parameters on the space radiation stability of the pigments and pigment-potassium silicate binder systems have been studied in detail. Optimization of the pigment-potassium silicate matrix for preparation of gallon quantities has been carried out. Formulation of these quantities is now routine. Application by spray and drawdown techniques for a variety of aluminum and titanium space vehicular shapes and sizes has been successful with no cracking or loss of adhesion. Coating preparation and deposition methods have evolved to produce inorganic coatings of minimal optical and physical changes in laboratory-simulated space radiation and vacuum environments. The potential for effectively coating large and complex shapes and structures with a high degree of reproducibility and reliability has been demonstrated. (Author).
Download or read book Formulation of Electrically Conductive Thermal control Coatings written by Michael C. Shai and published by . This book was released on 1978 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of the Examination of Ldef Polyurethane Thermal Control Coatings written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-21 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the condition of polyurethane thermal control coatings subjected to 69 months of low earth orbit (LEO) exposure on the Long Duration Exposure Facility (LDEF) mission. Specimens representing all environmental aspects obtainable by LDEF were analyzed. Widely varying changes in the thermo-optical and mechanical properties of these materials were observed, depending on atomic oxygen and ultraviolet radiation fluences. High atomic oxygen fluences, regardless of ultraviolet radiation exposure levels, resulted in near original optical properties for these coatings but with a degradation in their mechanical condition. A trend in solar absorptance increase with ultraviolet radiation fluence was observed. Contamination, though observed, exhibited minimal effects. Golden, Johnny L. EARTH ORBITAL ENVIRONMENTS; LONG DURATION EXPOSURE FACILITY; MECHANICAL PROPERTIES; OPTICAL PROPERTIES; POLYURETHANE RESINS; THERMAL CONTROL COATINGS; DEGRADATION; LOW EARTH ORBITS; OXYGEN ATOMS; SPACECRAFT CONTAMINATION; ULTRAVIOLET RADIATION...
Download or read book The Effects of Extreme Ultraviolet Radiation on the Optical Properties of Thermal control Coatings written by Donald D. Swofford (CAPT, USAF.) and published by . This book was released on 1967 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Thermal Control and Protective Coatings written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-05-29 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: This final report is concerned with the tasks performed during the contract period which included spacecraft coating development, testing, and applications. Five marker coatings consisting of a bright yellow handrail coating, protective overcoat for ceramic coatings, and specialized primers for composites (or polymer) surfaces were developed and commercialized by AZ Technology during this program. Most of the coatings have passed space environmental stability requirements via ground tests and/or flight verification. Marker coatings and protective overcoats were successfully flown on the Passive Optical Sample Assembly (POSA) and the Optical Properties Monitor (OPM) experiments flown on the Russian space station MIR. To date, most of the coatings developed and/or modified during this program have been utilized on the International Space Station and other spacecraft. For ISS, AZ Technology manufactured the 'UNITY' emblem now being flown on the NASA UNITY node (Node 1) that is docked to the Russian Zarya (FGB) utilizing the colored marker coatings (white, blue, red) developed by AZ Technology. The UNITY emblem included the US American flag, the Unity logo, and NASA logo on a white background, applied to a Beta cloth substrate.Mell, Richard J.Marshall Space Flight CenterPROTECTIVE COATINGS; THERMAL CONTROL COATINGS; OPTICAL PROPERTIES; COLOR
