Software for Analysis of Contamination of the ISS

The NASAN computer program can perform detailed analyses of molecular column density and molecular deposition on and around such complex space structures as the International Space Station (ISS). Contamination from both point sources (e.g., thrusters and vents) and diffuse sources (e.g., reflected plumes or outgassing of materials) can be analyzed. NASAN has been used to perform the assessments reported in the ISS incremental-design-review documents.