Accession Number : AD0665039

Title :   INVESTIGATION AND DEVELOPMENT OF MODIFICATIONS TO RESOLVE AIRBORNE/GROUND GLIDEPATH TRACKING PROBLEMS.

Descriptive Note : Interim rept.,

Corporate Author : WILCOX ELECTRIC CO INC KANSAS CITY MO

Personal Author(s) : Staehling,Dave M.

Report Date : OCT 1967

Pagination or Media Count : 70

Abstract : Investigations were made to ascertain the cause or causes of tracking errors (discrepancies in course information derived from two separate glide path antennas) observed by FAA flight-check aircraft. A null reference/capture effect facility was installed at Mosby, Missouri and numerous tests were made. Most tests were made with a portable crankup tower to probe the path but flight checks were made, also. It was concluded that tracking errors are observed because: (1) There are vertically polarized components of signal in space that contain false course information. (2) The two aircraft receiving antennas do not reject these vertical signals sufficiently and differ in their degree of rejection of these vertical signals. (Author)

Descriptors :   (*GLIDE PATH SYSTEMS, *TRACKING), ERRORS, AIRCRAFT ANTENNAS, LANDING AIDS, GUIDANCE, FLIGHT TESTING, AIRBORNE, SITE SELECTION, TRANSMITTER RECEIVERS, HELICOPTERS

Subject Categories : Helicopters
      Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE