Share Email Print
cover

Proceedings Paper

A semi-empirical method for the prediction of molecular contaminant film accumulation (Conference Presentation)
Author(s): Jonathan W. Arenberg; Matthew Macias; Ricardo C. Lara
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The current method for the prediction of molecular contamination build up in systems such as the James Webb Space Telescope and other large astronomical satellites is based on a monotonic linear model of accumulation. Recent long term observations carried out at Northrop Grumman show that the linear monotonic model over predicts thickness of the molecular film. This paper reviews the long term observations of contaminant film thickness accumulation made at Northrop Grumman facilities. The formulation of a semi-empirical method for the prediction of film thickness evolution consistent with both observation and first principles is discussed in detail. The paper concludes with a validation of the predictions of the semi-empirical model. The increased accuracy of the semi-empirical method holds the promise of improved and more effective means of contamination control, thus reducing mission cost and risk.

Paper Details

Date Published: 7 November 2016
PDF: 1 pages
Proc. SPIE 9952, Systems Contamination: Prediction, Control, and Performance 2016, 995202 (7 November 2016); doi: 10.1117/12.2237795
Show Author Affiliations
Jonathan W. Arenberg, Northrop Grumman Aerospace Systems (United States)
Matthew Macias, Northrop Grumman Aerospace Systems (United States)
Ricardo C. Lara, Northrop Grumman Aerospace Systems (United States)


Published in SPIE Proceedings Vol. 9952:
Systems Contamination: Prediction, Control, and Performance 2016
Joanne Egges; Carlos E. Soares; Eve M. Wooldridge, Editor(s)

Video Presentation

A-semi-empirical-method-for-the-prediction-of-molecular-contaminant



© SPIE. Terms of Use
Back to Top