An Evaluation of Window Glass for Air Traffic Control Tower Cabs
Final rept. Mar 1974-Aug 1975
NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY NJ
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Seven samples of commercially available glass were evaluated to determine their suitability for use in air traffic control tower cabs. Spectral transmissivity measurements were made on each sample for all wavelengths in the visible spectrum. A small experimental tower cab was constructed near the NAFEC airport, and controllers evaluated the samples in the tower cab under day, night, dawn, and dusk viewing conditions. The controller ratings were analyzed and evaluated in terms of the optical transmissivity of the samples and the type of window i.e., single pane and double pane. There were differences in the ratings of the samples, and the relative merit of the samples depended, in part, on the time of day the ratings were made. An unexpected factor in the ratings was the appearance of internal reflections in the double pane windows at night. Color illustrations reproduced in black and white.
- Ceramics, Refractories and Glass
- Air Navigation and Guidance