Accession Number : AD0654552

Title :   DEGRADATION LIMITS OF PLASTIC WINDSHIELDS IN SERVICE.

Descriptive Note : Technical rept.,

Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON D C AIRCRAFT DEVELOPMENT SERVICE

Personal Author(s) : Grom,Richard V. ; Marshall,Philip R.

Report Date : NOV 1965

Pagination or Media Count : 45

Abstract : A study of the optical and strength characteristics of plastic aircraft windshields was conducted to determine practical inspection tests that can be applied to in-service windshields. Portable instruments were developed to measure luminous transmittance and light scattering, and subjective visual tests were conducted to determine the effect of optical degradation on vision. Structural deterioration caused by crazing was also investigated. Project results indicate that further testing of the developmental instruments is desirable, and that additional subjective tests are needed to establish a rejection scale based upon visual performance through degraded windshields. (Author)

Descriptors :   (*WINDSHIELDS, AIRCRAFT), (*PLASTICS, WINDSHIELDS), DEGRADATION, OPTICAL PROPERTIES, LIGHT TRANSMISSION, SCATTERING, VISION

Subject Categories : Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE