Accession Number : ADA200559

Title :   Evaluation of Enhancements to the Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport.

Descriptive Note : Final rept. Jul 87-Mar 88,

Corporate Author : FEDERAL AVIATION ADMINISTRATION TECHNICAL CENTER ATLANTIC CITY NJ

Personal Author(s) : Barab, John D. ; Page, Richard D. ; Rosenburg, Bruce L. ; Zurinskas, Thomas E. ; Smythe, Glenn R.

Report Date : AUG 1988

Pagination or Media Count : 155

Abstract : An operational test and evaluation of enhancements to the 11-station Low Level Wind Shear Alert System (LLWAS) at Stapleton International Airport, Denver, Colorado, was conducted during the period August 3 to September 4, 1987. Enhancements included a 12th remote station for gathering wind data, a more sophisticated wind shear microbust detection (WSMD) algorithm, a Digital Equipment Corporation (DEC) PDP 11-73 computer, a DEC VT-240 Cathode Ray Tube (CRT) Display, and an LLWAS message display format, the latter two for local controller use in the air traffic control (ATC) tower cab. Two sets of objectives were associated with this LUWAS evaluation: meteorological objectives, which stressed determining the effectiveness of the WSMD algorithm in establishing the presence of hazardous wind shears on or near the airport and reducing the false alarm rate; and human factors objectives, which were concerned with evaluating the usefulness and effectiveness of the CRT display, the display message, and the local controller's message to pilots. This report discusses the methodology and dual scientific analyses carried out, and provides detailed results with conclusions and recommendations. Based on the conclusions, it was recommended that the WSMD algorithm remain as an operational constituent of the Denver LUWAS and that human factors considerations be further explored in improving the controller LUWAS interface. (FR)

Descriptors :   *WIND SHEAR, *WARNING SYSTEMS, AIR TRAFFIC CONTROL SYSTEMS, ALGORITHMS, CATHODE RAY TUBE SCREENS, CATHODE RAY TUBES, COLORADO, CONTROL, DETECTION, FALSE ALARMS, FORMATS, HAZARDS, HUMAN FACTORS ENGINEERING, INTERNATIONAL AIRPORTS, MESSAGE PROCESSING, METEOROLOGICAL DATA, OPERATIONAL EFFECTIVENESS, PILOTS, RATES, TEST AND EVALUATION, WIND.

Subject Categories : Terminal Flight Facilities
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE