TRISTAR I: Evaluation Methods for Testing Head-Up Display (HUD) Flight Symbology
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCHCENTER
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A piloted head up display HUD flight symbology study TRISTAR measuring pilot task performance was conducted at the NASA Ames Research Center by the Tri-Service Flight Symbology Working Group FSWO, which served as a focal point for the FSWG to examine HUD test methodology and flight symbology presentations. HUD climb-dive marker dynamics and climb-dive ladder presentations were examined as pilots performed air-to-air AA, air-to-ground AIG, instrument landing system, and unusual attitude recovery tasks. Symbolic presentations resembled pitch ladder variations used by the U.S. Air Force USAF, U.S. Navy USN, and Royal Air Force RAF. Investigations were conducted in a NASA fixed-base simulation cab. The cockpit of the simulation cab was configured to resemble a Harrier aircraft cockpit with fast-jet HUD flight symbology dynamics and AV-8B Harrier aerodynamic equations of motion. Six HUD-experienced male fighter and attack pilots from the USAF, USN, and RAF participated in the study. Time histories of 83 variables were recorded during the simulation. Four task maneuver performance methods were examined and both subjective and objective data were obtained for each task. Subjective questionnaires revealed several interesting trends based upon each task, such as the preference for a quickened climb-dive marker and a variable-compression pitch ladder for AIG tasks. Objective data indicated decreased reaction times and increased spatial awareness with asymmetrical climb-live ladders CDLs. The study was beneficial for working group researchers, providing a mechanism for exchange of test techniques and methods of presentations. Test techniques developed during the TRISTAR I simulation will be used during the TRISTAR II flight symbology evaluation.
- Flight Control and Instrumentation
- Human Factors Engineering and Man Machine Systems