Ascent Particle Filter Molecular Conductance Study
Abstract
Ascent particle filters on enclosures containing space hardware, such as electronics boxes, regulate venting of these enclosures during launch and ascent. While allowing venting to occur, these filters prevent the transport of particles into and out of the enclosures. Particle filters are primarily chracterized with respect to the flow of gas through the filter; the conductance of outgassed molecules is not quantified. This report documents a series of tests performed at The Aerospace Corporation's Space Materials Laboratory to measure the conductance of outgassed molecular contamination from a model contaminant across a typical particle filter as a function of outgassing arrival rate. The results herein show that a typical ascent particle filter significantly limits the conductance of molecular contamination.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 06, 2009
- Accession Number
- ADA506022
Entities
People
- Keith R. Olson
- Kelsey A. Folgner
- Randy M. Villahermosa
Organizations
- The Aerospace Corporation