A real-time simulation was conducted of three-dimensional area navigation and four-dimensional area navigation equipped (STOL) aircraft operating in a high-density terminal area traffic environment. The objectives were to examine the effects of 3D RNAV and 4D RNAV equipped aircraft on the terminal area traffic efficiency, and to examine the performance of an air traffic control system concept and associated controller display proposed for use with advanced RNAV systems. Three types of STOL aircraft were simulated each with different performance capabilities. System performance was measured in both the 4D mode and in a 3D mode; the 3D mode, used as a baseline, was simply the 4D mode less any time specification. The results show that communications workload in the 4D mode was reduced by about 35 percent compared to the 3D, while 35 percent more traffic was handled with the 4D. Aircraft holding time in the 4D mode was only 30 percent of that required in the 3D mode. In addition, the orderliness of traffic was improved significantly in the 4D mode.

  • Supplemental Notes:
    • Subm-Prepared in Cooperation with the Natl. Aviation Facilities Exptl. Center, Atlantic City, N. J.
  • Corporate Authors:

    Ames Research Center

    National Aeronautics and Space Administration
    Moffett Field, CA  United States  94035
  • Authors:
    • TOBIAS, L
    • Obrien, P J
  • Publication Date: 1977-8

Media Info

  • Pagination: 33 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00169067
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-TN-D-8499, A-6841
  • Files: TRIS
  • Created Date: Jan 30 1978 12:00AM