Work

Leak Rate Performance of Silicone Elastomer O-Rings Contaminated with JSC-1A Lunar Regolith Simulant

Year: 2015

Type: conference-paper

Abstract: Contamination of spacecraft components with planetary and foreign object debris is a growing concern. Face seals separating the spacecraft cabin from the debris filled environment are particularly susceptible; if the seal becomes contaminated there is potential for decreased performance, mission failure, or catastrophe. In this study, silicone elastomer O-rings were contaminated with JSC-1A lunar regolith and their leak rate performance was evaluated. The leak rate values of contaminated O-rings at four levels of seal compression were compared to those of as-received, uncontaminated, O-rings. The results showed a drastic increase in leak rate after contamination. JSC-1A contaminated O-rings lead to immeasurably high leak rate values for all levels of compression except complete closure. Additionally, a mechanical method of simulant removal was examined. In general, this method returned the leak rate to as-received values.

Source: ASCE International Conference on Engineering, Science, Construction, and Operations in Challenging Environments (Earth and Space)

DOI: 10.1061/9780784479179.015

Authors: H. A. Oravec, C. C. Daniels

Institution: University of Akron

Language: English

Topic: Space Exploration and Technology

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: green

Funders: National Aeronautics and Space Administration, York University