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Tuesday, July 21, 2020 | History

2 edition of The Effects of simulated low earth orbit environments on spacecraft thermal control coatings found in the catalog.

The Effects of simulated low earth orbit environments on spacecraft thermal control coatings

The Effects of simulated low earth orbit environments on spacecraft thermal control coatings

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  • 32 Currently reading

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .
Written in English

    Subjects:
  • Space vehicles -- Coatings.

  • Edition Notes

    StatementJoyce A. Dever ... [et al.].
    SeriesNASA technical memorandum -- 106146.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15383843M

    5. Increased spacecraft drag caused by the thermal expansion of the Earth’s upper atmosphere during space weather storms." 6. Communication disruptions between ground stations and spacecraft due to ionospheric irregularities" 7. Attitude control disruptions caused, for example, by large storm-time. This practical handbook provides the reader with enough background and specific information to begin conducting thermal analysis and to participate in the thermal design of spacecraft systems. The book is a revised and updated edition of Satellite Thermal Control Handbook, published in The name change reflects the expanded scope of this work, which now includes thermal environments and.

    The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings Candidate Space Station Freedom radiator coatings including Z, YB, anodized aluminum, and SiO x -coated silvered Teflon have been characterized for optical properties degradation upon exposure to environments containing atomic oxygen, vacuum. SPACE ENVIRONMENT The low Earth orbit environment consists of atomic oxygen, ultraviolet radiation, particulate radiation, thermal cycling, hard vacuum, and micrometeoroid/space debris particles. The majority of the atomic oxygen exposure was during the EOIM-3 part of the STS mission, when the Space Shuttle flew with the cargo bay oriented.

    Coated optics operate in environments that range from Low-Earth Orbit (LEO) (where the International Space Station (ISS) flies), to planetary and deep space probes. In addition to extended vacuum exposure and damage from micro-meteorite impact, the space environment poses additional radiation and thermal exposure which varies according to the. The various hazards in the low earth orbit space cause damage mostly on the exposed surfaces of polymer-based materials. Neutral particles, especially atomic oxygen, erode the exposed surface, and.


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The Effects of simulated low earth orbit environments on spacecraft thermal control coatings Download PDF EPUB FB2

The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings Joyce A. Dever and Sharon K. Rutledge National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio Eric J.

Bruckner Cleveland State University Cleveland, Ohio Curtis R. Stidham and Thomas J. Stueber Sverdrup Technology, Inc. Samples of International Space Station (ISS) thermal control coatings were exposed to simulated low Earth orbit (LEO) environmental conditions to determine effects on optical properties.

Candidate Space Station Freedom radiator coatings including Z, YB, anodized aluminum and SiO(x) coated silvered Teflon have been characterized for optical properties degradation upon exposure to environments containing atomic oxygen, vacuum ultraviolet (VUV) radiation, and/or silicone contamination.

YB coating showed a blue-gray discoloration, which has not been observed in space Cited by: 5. “The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings,” pp.

–, Society for the Advancement of Material and Process Engineering, Also: NASA Technical MemorandumMay Cited by: 7. "The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings," pp. Society for the Advancement of Material and.

In spacecraft design, the function of the thermal control system (TCS) is to keep all the spacecraft's component systems within acceptable temperature ranges during all mission must cope with the external environment, which can vary in a wide range as the spacecraft is exposed to deep space or to solar or planetary flux, and with ejecting to space the internal heat generated by the.

The severe environmental conditions in low Earth orbit (LEO) have a detrimental effect on the performance and longevity of some thermal control coatings. Commonly used thermal control materials such as silver-Teflon, Kapton, and organic paints have shown significant mass loss and changes in optical properties after exposure in LEO.

Sulfuric acid anodized aluminum has been. Effects of Low-Earth Orbit Space Environment on Structural Mechanics of a Deployable Membrane Space Antenna.

Evaluation of Protective Silicone/Siloxane Coatings in Simulated Low-Earth-Orbit Environment. The Effect of Asymmetric Mechanical and Thermal Loading on Membrane Wrinkling. The aging of thermal coatings critically impacts spacecraft thermal balance.

Because few in-flight data were available about the aging of materials after a long exposure on sun-synchronous orbit, Centre National d’Études Spatiales developed a low-cost experiment called THERME aiming to characterize the evolution of solar absorptivity through a temperature measurement.

Characterization of simulated low earth orbit space environment effects on acid-spun carbon Tensile testing was conducted by displacement control at a rate of mm/s. These results provide a deeper understanding of the effects of the space environment on CNT materials and will assist spacecraft designers in safely incorporating these.

Effect of simulated low earth orbit radiation on polyimides (UV degradation study) Minoru Iwata, Kazuhiro Toyoda, Mengu Cho, Xiaoquan Zheng, Effects of space environmental exposure on photoemission yield of polyimide, IEEE Transactions on Dielectrics and Electrical Information and Control, /MIC, ( Spacecraft Thermal Control Systems Col.

John E. Keesee Lesson Objectives: 1. The student will understand thermal control processes 2. The student will be able to calculate thermal balances and equilibrium temperatures 3. The student will be able to size and select thermal control systems. The space environment is especially harsh towards polymers.

The main hazards of the natural low earth orbit (LEO) environment include UV radiation, atomic oxygen (ATOX) atmosphere, ionizing radiation, plasma, meteoroids, debris, high vacuum, thermal cycles and electrostatic charging. The effects of simulated low Earth orbit environments on spacecraft thermal control coatings: NTRS Full-Text: View Document [PDF Size: MB]: Author and Affiliation.

The severe environmental conditions in low Earth orbit (LEO) have a detrimental effect on the performance and longevity of some thermal control coatings. Commonly used thermal control materials such as silver-Teflon, Kapton, and organic paints have shown significant mass loss and changes in optical properties after exposure in LEO.

Get this from a library. The Effects of simulated low earth orbit environments on spacecraft thermal control coatings. [United States. National Aeronautics and Space Administration.;]. Thermal control systems are an essential element of spacecraft design, ensuring that all parts of the spacecraft remain within acceptable temperature ranges at all times.

Spacecraft thermal control describes the fundamentals of thermal control design and reviews current thermal control technologies. The book begins with an overview of space missions and a description of the space environment. materials degradation in space, the low‑Earth orbit (LEO) environment, defined as ‑1, km above Earth’s surface, is a particularly harsh environment for most non‑metallic materials, because single‑oxygen atoms (atomic oxygen [AO]) are present along with all other environmental components (Yang and de Groh, ).

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. "The Effects of Simulated Low Earth Orbit Environments on Spacecraft Thermal Control Coatings", prepared for the 38th International SAMPE Symposium and Exhibition sponsored by the Society for the Advancement of Materials and Process Engineering, Anaheim, California, May, NASA-TM.

Samples of International Space Station (ISS) thermal control coatings were exposed to simulated low Earth orbit (LEO) environmental conditions to determine effects on optical properties. In one test, samples of the white paint coating ZP were coated with outgassed products from Tefzel(R) (ethylene tetrafluoroethylene copolymer) power cable.The impact of solar radiation on spacecraft can increase the cooling load, degrade the material properties of the structure and possibly lead to catastrophic failure of their missions.

In this paper, we develop a computational model to investigate the effect of the exposure to solar radiation on the thermal distribution of a spacecraft with a cylindrical shape which is traveling in low earth.of our time near Earth, we’ll focus our discussion of the space environment on spacecraft and astronauts in Earth orbits.

Figure The Atom. The nucleus of an atom contains positively charged protons and neutral neutrons. Around the nucleus are negatively charged electrons.