Evaluation of STOL Modular Instrument Landing System (MODILS).

Abstract

The FAA procured two modular instrument landing system (MODILS) ground stations for short take-off and landing (STOL) operational evaluation. MODILS operates at 5.2 GHz (C-band solid-state transmitter), providing localizer and glide slope signals, from a common site, for approach guidance to aircraft equipped with a MODILS receiver. Proportional guidance is provided from 3 degrees to 12 degrees elevation and about plus or minus 30 degrees in azimuth. The pilot may select his glide slope angle in increments of 0.1 degrees, and one of three localizer courses: parallel to runway centerline, 2 degrees skew one side and 6 degrees skew the other side. The pilot may also select his indicator sensitivities. An integral distance measuring equipment (DME) is included which provides readouts to 0.01 nmi. The system provides good quality guidance signals to adequately support Category I type (200-foot decision height) operations. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1972
Accession Number
AD0743555

Entities

People

  • Glen D. Adams

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • C Band
  • Communication Equipment
  • Distance Measuring Equipment
  • Elevation
  • Glide Slope
  • Ground Stations
  • Guidance
  • Indicators
  • Instrument Landings
  • Instrumentation
  • Integrals
  • Landing
  • Measuring Instruments
  • Navigational Equipment
  • Sensitivity
  • Test And Evaluation

Readers

  • Aerospace Test and Evaluation
  • Aviation Safety and Air Traffic Management
  • Radio communications and signal processing.