Accession Number : ADA192173

Title :   An Evaluation of Three Linear Scale Radar Altimeter Displays.

Descriptive Note : Final rept.,

Corporate Author : AERONAUTICAL SYSTEMS DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Carr, Larry A

PDF Url : ADA192173

Report Date : Jan 1988

Pagination or Media Count : 102

Abstract : Twelve fighter pilots were used as subjects to fly six low altitude missions in a full mission F-16 simulator with a visual system projected on a head-up display. The subjects were required to accomplish three descents to one of two altitudes (300' or 1000') on each of the missions and to maintain that altitude before then climbing back to cruising altitude were used as measures of performance. A Modified Cooper Harper scale was used to assess workload and a questionnaire was also used to ascertain subjective opinion concerning each scale. The original scale was compared with two alternative scales that both had an expanded lower portion and one of the two had an expanded upper altitude range. The results indicated that none of the performance measures were significant with respect to the scales being used. Accuracy for reading and plotting altitudes was better using the original scale apparently due to its larger number of scale markings. Workload ratings showed lower workload associated with the expanded upper scale in transitioning into and out of low altitude. Questionnaire data was not significant, but did result in key comments that showed distinct preference for the two alternatives scales with the expanded low altitude regions. A separate alternative scale was recommended for further testing.

Descriptors :   *HEAD UP DISPLAYS, *OPTICAL IMAGES, ACCURACY, ALTITUDE, CLIMBING, EXPANSION, FIGHTER AIRCRAFT, LOW ALTITUDE, MARKERS, MISSIONS, PILOTS, PLOTTING, PUBLIC OPINION, QUESTIONNAIRES, RANGE(EXTREMES), RATINGS, REGIONS, SCALE, WORKLOAD

Subject Categories : Air Navigation and Guidance
      Active & Passive Radar Detection & Equipment
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE