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  • 1
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    Preliminary assessment of the microwave landing system requirements for STOL operations (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The results of an investigation made to assess the Microwave Landing System (MLS) Requirements for use by civil STOL aircraft are described. The principal MLS characteristics investigated in the report were signal accuracy and volume of coverage. The study utilized a nonlinear six-degree-of-freedom digital simulation of a De Havilland Buffalo C-8A aircraft. Fully automatic control of timed curve flight down to touchdown was simulated. Selected MLS accuracy and coverage parameters for the azimuth, primary elevation, flare evelation and DME signals were varied. The resulting STOL aircraft system performance in following a representative curved flight path was statistically determined. Coverage requirements for STOL aircraft operating in the terminal area environment were also investigated.
    Keywords: NAVIGATION
    Type: NASA-TM-X-62310
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    A technique for evaluating parameter variations for automatically controlled aircraft with an application to the landing approach (1971)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Minimizing performance criterion to analyze ability of automatically controlled aircraft to maintain accurate flight path control during landing approach
    Keywords: NAVIGATION
    Type: NASA-TN-D-6230 , A-3244
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Microwave landing system requirements for STOL operations (1974)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The operational/functional requirements for the new Microwave Landing System (MLS) are examined for STOL operations. The study utilizes a nonlinear six-degree-of-freedom simulation of a De Havilland Buffalo C-8A aircraft and automatic flight control system to assess the MLS/STOL accuracy, coverage, and data rate requirements for the azimuth, DME, primary elevation, and flare elevation functions. The aircraft performance is statistically determined for representative curved flight paths through touchdown. A range of MLS errors and coverages, environmental disturbances, and navigation filtering are investigated. The study indicates that STOL applications do not place any unique requirements on the MLS.
    Keywords: NAVIGATION
    Type: AIAA PAPER 74-997 , Aircraft Design, Flight Test and Operations Meeting; Aug 12, 1974 - Aug 14, 1974; Los Angeles, CA
    Format: text
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    NASA TECHNICAL REPORTS
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