Satellite Contamination and Materials Outgassing Knowledgebase

Minor, Jody; Kauffman, W. J.

doi:10.2514/6.2001-2957

Cited by 3 publications

(2 citation statements)

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“…Small Missions for Advanced Research in Technology-2, finished on 30 June 2017) are still today under elaboration. The Roscosmos (Russian space agency) launched three different experiments in the framework of the MIR Space Station for contamination monitoring by using QCMs these experiments (Minor 2001, Soares and Mikatarian 1994, Krylov et al 2015 are grouped with the QCM experiments performed onboard ISS (Table 7) and are listed in the following:…”

Section: Qcms For Space Applications 31 Historical View Missions Anmentioning

confidence: 99%

A review of quartz crystal microbalances for space applications

Dirri

Palomba

Longobardo

et al. 2019

Sensors and Actuators A: Physical

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The aim of this work is a technical review about Quartz Crystal Microbalance (QCM) sensors used in space missions, i.e. Space Shuttle flights, i.e. NASA Space Transportation System (NASA STS) and satellite missions, that aimed at monitoring the contamination generated by outgassing processes of materials onboard satellites and sensitive payloads. The contamination processes are critical for scientific instrumentation (e.g. optics, telescopes, detectors) because scientific measurements and performances can be jeopardized or worsened by uncontrolled contamination. This issue has been addressed by the space agencies, e.g. NASA, ESA and JAXA that have implemented many different studies to monitor the material outgassing and degradation in space environment. During the past years, the QCM sensors have become the baseline solution for measuring material outgassing and characterizing the on-orbit contamination environment. This work summarizes the main QCM applications in Space and their findings, providing an overview of the sensors' performances in terms of stability, power, data rate, measurement accuracy and resolution. Different QCM technologies will be compared highlighting the advantages of their use for the next space missions and instrumentations that require an accurate monitoring of contamination environment. In particular, due to more severe contamination requirements for next payloads and instrumentations, QCM sensors would be useful to estimate the cleanliness degree by evaluating the induced contamination and degradation on sensitive instrumentations.

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Section: Qcms For Space Applications 31 Historical View Missions Anmentioning

confidence: 99%

A review of quartz crystal microbalances for space applications

Dirri

Palomba

Longobardo

et al. 2019

Sensors and Actuators A: Physical

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“…That can constitute a big advantage during the first months, even the first year of service in orbit for the satellite. Due to surface and material outgassing, the vacuum level is low and the atmosphere comprised of a high level of water [59][60][61]. Such water can help in producing the proper transfer film.…”

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confidence: 99%

Experimental Analysis of Friction and Wear of Self-Lubricating Composites Used for Dry Lubrication of Ball Bearing for Space Applications

et al. 2021

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Lubricating space mechanisms are a challenge. Lubrication must be sustained in different environments, for a very long period of time, and without any maintenance possible. This study focuses on the self-lubricating composite used in the double transfer lubrication of ball bearing. Ball/races contacts are lubricated via the transfer of materials from the cage that is made of the composite. A dedicated tribometer has been designed for the study. A specificity of the tribometer is to not fully constrain the composite sample but to let it move, as the cage would do in the bearing. Four composites (PTFE, MoS2, glass or mineral fibers) where tested in ultrahigh vacuum and humid air environments. Transfer was achieved with morphologies and composition similar to what is observed on real bearings. Adhesion measurements performed on composite materials before and after friction allowed one to explain the differences in tribological behaviors observed (transfer quality and contact instabilities). Beyond strengthening the composites, fibers are shown to be critical in trapping mechanically and chemically the transferred material to lubricate and prevent instabilities. Equilibrium between internal cohesion of transferred material, and adhesion to counterparts must be satisfied. Mass spectrometry showed that water appears also critical in the establishment of stable transfer film, even in vacuum.

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Suppressing the frequency jump in quartz crystal microbalance

Han

Zheng²,

2014

Proceedings of the 2014 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications

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Satellite Contamination and Materials Outgassing Knowledgebase

Cited by 3 publications

References 0 publications

A review of quartz crystal microbalances for space applications

A review of quartz crystal microbalances for space applications

Experimental Analysis of Friction and Wear of Self-Lubricating Composites Used for Dry Lubrication of Ball Bearing for Space Applications

Suppressing the frequency jump in quartz crystal microbalance

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