Accession Number : AD0725705

Title :   STOL Aircraft Instrument Landing System.

Descriptive Note : Final rept.,

Corporate Author : EPSCO INC WESTWOOD MASS

Personal Author(s) : Hills,Robert S.

Report Date : FEB 1971

Pagination or Media Count : 66

Abstract : The report describes the development of a Microwave Scanning Beam Instrument Landing System for STOL aircraft and airports (MODILS). It is a flexible system meeting or exceeding Category I requirements with a growth potential for handling all types of aircraft in Categories II and III by modular additions. In azimuth it provides plus or minus 0.5 degree accuracy with pilot selected course width between plus or minus 2 degrees and plus or minus 10 degrees within a 60 degree course sector. A left or right skew course, as well as a centerline course is selectable. In elevation it provides plus or minus 0.1 degree accuracy of a pilot selected glide slope between 3 degrees and 12 degrees and path width of plus or minus 1 to plus or minus 5 degrees. Integral DME functions are provided with an accuracy of plus or minus 0.01 nautical miles plus or minus 1% of range to a range of approximately 10 nautical miles. The ground station is entirely dualistic except for antennas. Switch-over from main to standby equipment is controlled by integral dual monitor units operating in parallel. (Author)

Descriptors :   (*INSTRUMENT LANDINGS, *MICROWAVE EQUIPMENT), (*SHORT TAKEOFF AIRCRAFT, INSTRUMENT LANDINGS), RADIO SCANNING, AIRPORTS, AZIMUTH, GLIDE PATH SYSTEMS, DISTANCE MEASURING EQUIPMENT

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE