Accession Number : AD0657196

Title :   ANALYSIS OF VECTOR ANALOGUE COMPUTER.

Descriptive Note : Final rept.

Corporate Author : ELECTRO TECHNICAL ANALYSIS CORP TUCSON AZ

Report Date : JUN 1967

Pagination or Media Count : 128

Abstract : The principles and implementation of the Butler Vector Analog Computer are analyzed with emphasis on four concepts: distance proportional filtering, servo loop follow up speed limitations, constant deviation, and VOR receiver rf and af detection improvements. The VAC principles are found to be particularly advantageous when symmetrical VORTAC scalloping exists at frequencies higher than the VAC variable low-pass filtering threshold, (which is a function of amplitude owing to the nonlinear circuit implementation). The mathematical analysis tends to support the Butler Research conclusions that a substantial portion of observed VOR scallops can be attributed to spurious receiver response to rf amplitude changes. (Author)

Descriptors :   *NAVIGATIONAL AIDS), (*NAVIGATION COMPUTERS, PERFORMANCE(ENGINEERING), WIRING DIAGRAMS, MATHEMATICAL ANALYSIS, CALIBRATION, FLIGHT INSTRUMENTS, AVIATION SAFETY, ANALOG COMPUTERS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE