STOL Aircraft Instrument Landing System.
EPSCO INC WESTWOOD MASS
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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
- Air Navigation and Guidance