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
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE