Accession Number : AD0704476

Title :   LET-DOWN GUIDANCE SYSTEM.

Descriptive Note : Final rept. Jan 67-Jun 69,

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

Personal Author(s) : Adams,Glen D.

Report Date : APR 1970

Pagination or Media Count : 29

Abstract : A small airborne analog computer which converts distance and barometric altitude inputs into vertical guidance signals is described. The output of the computer is presented on a conventional crosspointer instrument for use by a pilot. The guidance function may be a two-segment approach to land for noise abatement, a one-segment approach to land where no ground-based instrument landing system (ILS) exists, an altitude hold signal, or a climb to a preassigned altitude and distance. Limited accuracy tests have been conducted and an operational field evaluation is underway. Engineering design changes and improvements continue in support of the field evaluation. (Author)

Descriptors :   (*GLIDE PATH SYSTEMS, ANALOG COMPUTERS), APPROACH INDICATORS, ALTITUDE, RANGE(DISTANCE), AIRCRAFT NOISE, NAVIGATION COMPUTERS

Subject Categories : Flight Control and Instrumentation
      Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE