Accession Number : AD0748682

Title :   VASIS Signal Transition Zone and Color Modifications.

Descriptive Note : Interim rept. Jul 71-Jul 72,

Corporate Author : NATIONAL AVIATION FACILITIES EXPERIMENTAL CENTER ATLANTIC CITY N J

Personal Author(s) : Gates,Robert F. ; Paprocki,Thomas H.

Report Date : SEP 1972

Pagination or Media Count : 24

Abstract : The report covers the results of a portion of the overall project effort to develop an improved Visual Approach Slope Indicator System (VASIS). A method of decreasing the VASI signal pink transition zone was evaluated and the effect of substituting different color density and hue red filters was studied. As a result of the testing, it was concluded that the standard VASI signal can be significantly improved by a slight modification to the geometry of the transition bar and by substitution of different filters. (Author)

Descriptors :   (*GLIDE PATH SYSTEMS, *APPROACH INDICATORS), (*CIVIL AVIATION, AVIATION SAFETY), RELIABILITY, COLORS, ACCEPTABILITY

Subject Categories : Commercial and General Aviation
      Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE