Accession Number:

ADA295035

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, III
• Ivey, Rebecca H.
• Rash, Clarence E.
• McLean, William E.

Report Date:

1995-03-01

Pagination or Media Count:

40.0

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.

Descriptors:

• *TRANSMITTANCE
• *WINDSHIELDS
• *ROTARY WING AIRCRAFT
• *TRANSPARENCIES
• REQUIREMENTS
• LUMINOSITY
• MEASUREMENT
• ENVIRONMENTS
• AIRCRAFT
• EXPOSURE(GENERAL)
• FIELD TESTS
• FAILURE
• CONSISTENCY
• SPECTRA
• SAMPLING
• LABORATORY PROCEDURES
• NIGHT
• LOSSES
• ARMY AIRCRAFT
• HAZE

Subject Categories:

• Aircraft
• Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE