An evaluation of existing motion fidelity criteria was conducted on the NASA Ames Vertical Motion Simulator. Experienced test pilots performed single-axis repositioning tasks in both the vertical and the directional axes using transfer-function approximations of a hovering helicopter. Gain and natural frequency variations were made only in the software filters that attenuate the commands to the simulator motion system. The variations spanned motion response characteristics from nearly full math-model motion to fixed-base. Between configurations, pilots recalibrated their motion response perception by flying the task with full motion. Pilots subjectively rated the motion fidelity of subsequent configurations relative to this full motion case, which was considered the standard for comparison. The results suggested that the existing vertical-axis criterion was accurate for combinations of gain and natural frequency changes. However, if only the gain or the natural frequency was changed, the rated motion fidelity was better than the criterion predicted. In the vertical axis, the objective and subjectice results indicated that a larger gain reduction was tolerated than the existing criterion allowed. Significant degradations in performance were noted between the full-vertical motion and no-vertical motion configurations. The limited data collected in the yaw axis revealed that pilots has difficulty in distinguishing among the variations in the pure yaw motion cues, thus indicating that pure yaw motion may be of little importance in hovering flight simulation.
Evaluation of simulation motion fidelity criteria in the vertical and directional axes
Evaluierung von Kriterien zur Flugsimulationsgüte für den Steig- und Richtflug
Journal of the American Helicopter Society ; 41 , 2 ; 44-57
1996
14 Seiten, 14 Bilder, 2 Tabellen, 22 Quellen
Aufsatz (Zeitschrift)
Englisch
Evaluation of simulation motion fidelity criteria in the vertical and directional axes
Online Contents | 1996
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