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Proceedings Paper

Damage Of Infrared-Transparent Materials Exposed To Rain Environments At High Velocities
Author(s): J. V. Hackworth
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Paper Abstract

Materials for infrared windows, selected on the basis of their transparency at selected wavelengths, are often subject to damage from exposure to rain at high velocities. This damage may result in a loss of transmittance, the magnitude of which depends on the velocity and the time spent in the rain, or it may result in a structural failure of the window. This latter may occur without significant prior loss of transmittance. It is necessary to know the effects of the anticipated rain environment on the performance of the various window materials, so operating limits can be defined. For this reason, a considerable amount of experimental and analytical work has been performed to determine the response of infrared-transparent materials to water drop impact. Additional objectives are to guide the development of materials with improved erosion resistance and to develop methods to protect the less erosion resistant materials. This paper describes some of this work which has been performed at Bell Aerospace Textron.

Paper Details

Date Published: 5 April 1983
PDF: 14 pages
Proc. SPIE 0362, Scattering in Optical Materials II, (5 April 1983); doi: 10.1117/12.934142
Show Author Affiliations
J. V. Hackworth, Ball Aerospace Textron (United States)

Published in SPIE Proceedings Vol. 0362:
Scattering in Optical Materials II
Solomon Musikant, Editor(s)

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