Accession Number : ADA296675
Title : Transmittance Characteristics of U.S. Army Rotary-Wing Aircraft Transparencies.
Descriptive Note : Final rept.,
Corporate Author : ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL
Personal Author(s) : Wentworth, Sean L. ; McGowin, Everette, II ; Ivey, Rebecca H. ; Rash, Clarence E. ; McLean, William E.
PDF Url : ADA296675
Report Date : MAR 1995
Pagination or Media Count : 40
Abstract : This report documents a survey of the spectral and luminous transmittance characteristics of transparencies (windscreens) used in currently fielded U.S. Army rotary-wing aircraft. The survey was conducted in two phases. In the first phase, samples of windscreens from each aircraft type were evaluated in the laboratory for phototopic (day) and scotopic (night) luminous transmittance. The spectral transmittance of each sample also was measured. Based on laboratory measurements of unused samples, all windscreens met specifications. However, field measurements on windscreens showed consistent failure of luminous transmittance requirements. This loss of transmittance is attributed to haze resulting from exposure to environmental factors. (MM)
Descriptors : *HELICOPTERS, *LIGHT TRANSMISSION, *WINDSHIELDS, *ROTARY WING AIRCRAFT, ATTACK HELICOPTERS, LUMINOSITY, OPTICAL PROPERTIES, SPECIFICATIONS, TRANSPARENCE, ILLUMINATION, SPECTRA, ARMY AIRCRAFT.
Subject Categories : Helicopters
Distribution Statement : APPROVED FOR PUBLIC RELEASE