AIRBORNE AIDS FOR COPING WITH LOW-LEVEL WIND SHEAR

This report summarizes the development and test of airborne displays, instrumentation and procedures for aiding an airline jet-transport pilot to cope with wind shear on approach-and-landing and on takeoff. The task involved analysis of windshear effects, development of wind models including shear and turbulence, specification of displays and instrument models, and conduct of six large-scale piloted flight-simulation exercises. A set of candidate standard wind-shear models was developed. The beneficial effects of training in a moving-base simulator were noted. In tests on both wide bodied (DC-10) and nonwide-bodied (B-727) airplanes, and both precision and localizer-only approach, conventional instrumentation was found inadequate for coping with wind shear. Many instruments and techniques, including head-up displays, were tested. Ground speed was found to be an important additional item of information. A system, consisting of acceleration and ground speed augmented flight director, acceleration-margin criterion for advising go-around, and minimum-height-loss go-around pitch steering, was found to solve the wind-shear problem on approach and landing. Test procedures and requirements for device qualification were developed. No instrumentation was found that aided in coping with severe wind shear on takeoff.

  • Supplemental Notes:
    • Prepared in cooperation with Rockwell International, Cedar Rapids, IA. Collins Avionics Group, Douglas Aircraft Co., Boeing Co., and National Aeronautics and Space Administration, Moffett Fields, CA. Ames Research Center.
  • Corporate Authors:

    SRI International

    333 Ravenswood Avenue
    Menlo Park, CA  USA  94025-3493

    Federal Aviation Administration

    William J. Hughes Technical Center, Airport Technology Research and Development Branch
    Atlantic City International Airport
    Atlantic City, NJ  USA  08405
  • Authors:
    • FOY, W H
  • Publication Date: 1979-7

Media Info

  • Pagination: 99 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00313173
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: FAA-RD-79-117
  • Contract Numbers: DOT-FA75WA-3650
  • Files: NTIS, USDOT
  • Created Date: May 7 2002 12:00AM