Space Environment Exposure of Polymer Films on the Materials International Space Station Experiment: Results from MISSE 1 and MISSE 2

Dever, Joyce A.; Miller, Sharon K.; Sechkar, Edward A.; Wittberg, T. N.

doi:10.1177/0954008308089704

Cited by 57 publications

(33 citation statements)

References 5 publications

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“…As one example, several retrieved tensile samples in the MISSE 1 and 2 Polymer Film Thermal Control and Gossamer Materials Experiments appeared to have preferentially eroded at high-stress locations. 56 Therefore, the Stressed Polymers Erosion and Contamination Experiment was designed and flown as part of MISSE 6A to compare the atomic oxygen erosion yield of stressed and nonstressed polymers to determine if the erosion rate is dependent upon stress while in LEO. 50 …”

Section: Materials International Space Station Experiments 1-7mentioning

confidence: 99%

Overview of the Natural Space Environment and ESA, JAXA, and NASA Materials Flight Experiments

Edwards¹,

Tighe²,

Eesbeek³

et al. 2010

MRS Bull.

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velocity. Technology improvements allow higher resolution measurements; computing efficiency provides higher precision modeling; and our understanding of the space environment constituency improves. This overview will provide a general description of the space environment and point to some key features that spacecraft designers need to consider to reduce risk and improve engineering performance. The best metric that spacecraft designers can use to assess the engineering performance of the spacecraft is to understand environmental effects on the spacecraft materials, particularly through flight experiments exposed to the space environment in which the spacecraft will operate. This understanding begins with characterizing the natural space environment, then progresses to ground-based materials testing, and culminates with flight experiments. The following are process steps that spacecraft engineers should ideally follow to assess the performance and guide selection of candidate materials for spacecraft application:Define mission-specific space environment.Consider induced environment factors that could influence material engineering performance.Determine failure criteria for candidate materials.Perform literature search for previous space environment testing or flight experiments on candidate materials.Determine acceptable acceleration factors for ground testing.Perform ground tests, including appropriate/available synergistic effects.Expose material on a flight experiment in the space environment. Space EnvironmentThe natural space environment is a dynamic synergy of its constituents, comprised of many components that vary in intensity and interact with each other through both constructive and destructive mechanisms. The first step in understanding the engineering performance of a material in the space environment is to understand the operational space environment and the interactions with the spacecraft materials. Today, the space environment engineer has a very good understanding of the environmental constituents and has models to predict the flux, fluence, and spatial distributions of each component. The part of the predictive tool that is missing is a thorough understanding of the synergy of how these individual components of the environment interact and produce effect in materials. Often these synergistic effects are not accurately simulated in ground test facilities.

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Section: Materials International Space Station Experiments 1-7mentioning

confidence: 99%

Overview of the Natural Space Environment and ESA, JAXA, and NASA Materials Flight Experiments

Edwards¹,

Tighe²,

Eesbeek³

et al. 2010

MRS Bull.

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“…Eight pin-ondisk tribometers were designed, constructed, and flown as part of the seventh Materials on the International Space Station Experiments (MISSE 7) platform. MISSE 7 is the seventh of a series of experiments designed to provide the community with a platform to perform experiments in the harsh low earth orbit (LEO) environment [3][4][5]. This ambitious seventh MISSE program includes several active experiments, which actively collect data on orbit and many passive experiments (exposure experiments that are analyzed in the lab upon mission completion with no active data acquisition on orbit) including solar arrays, tribometers, optical samples, spectrometers, and others [6].…”

Section: Introductionmentioning

confidence: 99%

Space Tribometers: Design for Exposed Experiments on Orbit

Krick

Sawyer

2010

Tribol Lett

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Eight pin-on-disk tribometers have been made for testing materials in space on board the International Space Station. They will be exposed directly to the low earth orbit (LEO) environment on board the ''Materials on the International Space Station Experiments'' platform where they will experience extreme conditions including atomic oxygen, ultrahigh vacuum, radiation (including UV radiation), and thermal ranges from -40 to 60°C. In order to survive launch and LEO, these tribometers were designed to be extremely compact, rugged, and reliable. Pin-on-disk tribology experiments are now being performed with a 13.2 mm/s sliding velocity (14 RPM at 9 mm wear track radius) and a 1 N normal load with hemispherical pin of 1.5875 mm radius. Materials tested include MoS 2 /Sb 2 O 3 /Au, MoS 2 /Sb 2 O 3 /C, YSZ/Au/MoS 2 / DLC, and SiO-doped DLC coatings, and bulk samples of polytetrafluoroethylene (PTFE) alumina nanocomposites and gold.

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“…5) Since the number of AO monitor materials installed in exposure test facilities is limited, it is impossible to identify the AO fluence of each exposed test sample by measuring the mass loss of an exclusive monitor material. The AO distribution analysis tool makes it possible to estimate the AO fluence of each exposed test sample by interpolating some fluence data from the AO monitor materials.…”

Section: Future Plansmentioning

confidence: 99%

“…On the other hand, the space environment exposure experiments in LEO have been performed on satellites, 2) space shuttles, 3) and the ISS 4,5) for the purpose of assessing reaction efficiency, which is defined as the volume of materials removed by AO atoms, on various materials. Experiments have been also performed for the verification test of AO-resistant materials in orbit, and to clarify the erosion mechanism.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Atomic Oxygen Fluence Distribution on Satellite Surface

Iwata

Ogawa²,

Kobayashi³

et al. 2012

AEROSPACE TECHNOLOGY JAPAN

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The atomic oxygen (AO) in low Earth orbit erodes spacecraft materials. Since the organic materials are significantly damaged by AO, we must evaluate the erosion effects during satellite missions before launch. The first step in evaluating the erosion effect due to AO is to determine the distribution of AO fluence and/or flux on the entire satellite surface during the satellite mission. The AO fluence on the satellite surface is different for different parts of the satellite surface because the ram surface receives AO changes according to the satellite attitude in orbit. Therefore, AO fluence must be estimated by considering the satellite attitude, shape, ram direction and AO density in orbit. However, there are no studies in which the AO fluence distribution is estimated for the entire satellite surface. In addition, there is no tool to analyze AO fluence distribution on the satellite surface. Thus, in this study, we construct an AO fluence distribution analysis tool and estimate the AO fluence distribution on the entire satellite surface.

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Space Environment Exposure of Polymer Films on the Materials International Space Station Experiment: Results from MISSE 1 and MISSE 2

Cited by 57 publications

References 5 publications

Overview of the Natural Space Environment and ESA, JAXA, and NASA Materials Flight Experiments

Overview of the Natural Space Environment and ESA, JAXA, and NASA Materials Flight Experiments

Space Tribometers: Design for Exposed Experiments on Orbit

Analysis of Atomic Oxygen Fluence Distribution on Satellite Surface

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