Abstract
AbstractThe research reported in this paper is aimed at the development of a metric to quantify and predict the extent of pilot control compensation required to fly a wide range of mission task elements. To do this, the utility of a range of time- and frequency-domain measures to examine pilot control activity whilst flying hover/low-speed and forward flight tasks are explored. The tasks were performed by two test pilots using both the National Research Council (Canada)’s Bell 412 Advanced Systems Research Aircraft and the University of Liverpool’s HELIFLIGHT-R simulator. Handling qualities ratings were awarded for each of the tasks and compared with a newly developed weightedadaptivecontrol compensation metric based on discrete pilot inputs, showing good correlation. Moreover, in combination with a time-varying frequency-domain exposure, the proposed metric is shown to be useful for understanding the relationship between the pilot’s subjective assessment, measured control activity and task performance. By collating the results from the subjective and objective metrics for a range of different mission task elements, compensation boundaries are proposed to predict and verify the subjective assessments from the Cooper-Harper Handling Qualities Rating scale.
Highlights
During flight and piloted simulation test campaigns, assessment of the Handling Qualities (HQs) of an aircraft is traditionally undertaken with Test Pilots (TPs) awarding Handling Qualities Ratings (HQRs) using the scale developed by Cooper and Harper in 1969 [1]
7.0 Conclusions and future work The paper has described the development of a new control compensation metric, suitable for predicting and explaining the Handling Qualities rating assigned by a pilot
The weighted adaptive attack activity rate metric has been shown to have good correlation with the Handling Qualities ratings awarded by pilots for a range of mission task elements
Summary
During flight and piloted simulation test campaigns, assessment of the Handling Qualities (HQs) of an aircraft is traditionally undertaken with Test Pilots (TPs) awarding Handling Qualities Ratings (HQRs) using the scale developed by Cooper and Harper in 1969 [1]. The HQRs, along with the achieved performance and the compensation descriptors, provide insight into the consequences of HQ deficiencies of the vehicle system, the ratings will be ‘affected’ by individual pilot biases, the subjective element of making the award [6] This includes inter- and intra-pilot variability, training and operational background, situational awareness, fatigue level and environmental factors.
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