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Proceedings Paper

Optical window systems
Author(s): Robert H. Au
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Paper Abstract

Optical window systems protect sensor systems from the aerodynamic and atmospheric environments. The aerodynamic heating on an optical window located about 1 foot downstream from the spherical nose tip is analyzed. The vehicle flies at a constant Mach number and at a constant altitude. The Mach numbers range from 1.5 to 5 and the altitudes from 10 to 30 km. The mechanical responses are calculated for yttria and lanthana-doped yttria, infrared window materials currently being developed for the 3 to 5 im applications. The results show that the yttria window temperature is about 1000 K at Mach 5 and 10 km altitude for an emissivity of 0.04 at 5 μm Steady state and constant altitude flight are assumed.

Paper Details

Date Published: 1 October 1990
PDF: 11 pages
Proc. SPIE 1326, Window and Dome Technologies and Materials II, (1 October 1990); doi: 10.1117/12.22504
Show Author Affiliations
Robert H. Au, Lockheed Missiles & Space Co., Inc. (United States)


Published in SPIE Proceedings Vol. 1326:
Window and Dome Technologies and Materials II
Paul Klocek, Editor(s)

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