FLIGHT DEMONSTRATIONS OF CURVED, DESCENDING APPROACHES AND AUTOMATIC LANDINGS USING TIME REFERENCED SCANNING BEAM GUIDANCE

The Terminal Configured Vehicle (TCV) program operates a Boeing 737 modified to include a second cockpit and a large amount of experimental navigation, guidance and control equipment for research on advanced avionics systems. Demonstration flights to include curved approaches and automatic landings were tracked by a phototheodolite system. For 50 approaches during the demonstration flights, the following results were obtained: the navigation system, using TRSB guidance, delivered the aircraft onto the 3 nautical mile final approach leg with an average overshoot of 25 feet past centerline, subjet to a 2-sigma dispersion of 90 feet. Lateral tracking data showed a mean error of 4.6 feet left of centerline at the category 1 decision height (200 feet) and 2.7 feet left of centerline at the category 2 decision height (100 feet). These values were subject to a sigma dispersion of about 10 feet. Finally, the glidepath tracking errors were 2.5 feet and 3.0 feet high at the category 1 and 2 decision heights, respectively, with a 2 sigma value of 6 feet.

  • Corporate Authors:

    Langley Research Center

    National Aeronautics and Space Administration
    Hampton, VA  USA  23665
  • Authors:
    • White, W F
  • Publication Date: 1978-5

Media Info

  • Pagination: 269 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00186519
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NASA-TM-78745
  • Files: TRIS
  • Created Date: Feb 27 1979 12:00AM