Publication result detail

Experimental study of space lubricant evaporation in a high vacuum environment

POUZAR, J.; KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

Original Title

Experimental study of space lubricant evaporation in a high vacuum environment

English Title

Experimental study of space lubricant evaporation in a high vacuum environment

Type

WoS Article

Original Abstract

The liquid lubricant evaporation in space applications poses significant challenges, raising the risk of inaccurate estimation of lubricant implementation and the potential contamination of satellite subsystems. The study of vacuum evaporation becomes highly relevant with the increasing use of liquid lubricants in satellite constellations. This research presents a novel methodology for assessing the lubricant evaporation rate, focusing on establishing a correlation between existing analytical models and experimental measurements. The obtained experimental results clearly demonstrate a disparity between the existing analytical models and the measured evaporated mass of vacuum base oils. Importantly, these results indicate higher evaporation rates predicted by the analytical approach. This emphasises the importance of refining the analytical models to accurately predict the amount of liquid lubricant evaporated.

English abstract

The liquid lubricant evaporation in space applications poses significant challenges, raising the risk of inaccurate estimation of lubricant implementation and the potential contamination of satellite subsystems. The study of vacuum evaporation becomes highly relevant with the increasing use of liquid lubricants in satellite constellations. This research presents a novel methodology for assessing the lubricant evaporation rate, focusing on establishing a correlation between existing analytical models and experimental measurements. The obtained experimental results clearly demonstrate a disparity between the existing analytical models and the measured evaporated mass of vacuum base oils. Importantly, these results indicate higher evaporation rates predicted by the analytical approach. This emphasises the importance of refining the analytical models to accurately predict the amount of liquid lubricant evaporated.

Keywords

Space tribology; Vacuum evaporation; Multiply-alkylated cyclopentane; Perfluoropolyether

Key words in English

Space tribology; Vacuum evaporation; Multiply-alkylated cyclopentane; Perfluoropolyether

Authors

POUZAR, J.; KOŠŤÁL, D.; ŠPERKA, P.; KŘUPKA, I.; HARTL, M.

RIV year

2024

Released

02.11.2023

Publisher

PERGAMON-ELSEVIER SCIENCE LTD

Location

OXFORD

ISBN

0042-207X

Periodical

Vacuum

Volume

219

Number

A

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

7

Pages count

7

URL

https://www.sciencedirect.com/science/article/pii/S0042207X23009557

BibTex

@article{BUT185804,
  author="Josef {Pouzar} and David {Košťál} and Petr {Šperka} and Ivan {Křupka} and Martin {Hartl}",
  title="Experimental study of space lubricant evaporation in a high vacuum environment",
  journal="Vacuum",
  year="2023",
  volume="219",
  number="A",
  pages="1--7",
  doi="10.1016/j.vacuum.2023.112758",
  issn="0042-207X",
  url="https://www.sciencedirect.com/science/article/pii/S0042207X23009557"
}