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.
- 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.
SRI International333 Ravenswood Avenue
Menlo Park, CA United States 94025-3493
Federal Aviation AdministrationWilliam J. Hughes Technical Center, Airport Technology Research and Development Branch
Atlantic City International Airport
Atlantic City, NJ United States 08405
- FOY, W H
- Publication Date: 1979-7
- Pagination: 99 p.
- TRT Terms: Altitude; Approach; Flight simulators; Information display systems; Landing; Landing aids; Mathematical models; Passenger aircraft; Takeoff; Wind; Wind shear
- Uncontrolled Terms: Low altitude
- Old TRIS Terms: Aircraft landing
- Subject Areas: Aviation; Vehicles and Equipment;
- 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