Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation
Abstract The procedures to be performed after sudden engine failure of a single-engine helicopter impose high workload on pilots. The maneuver to regain aircraft control and safe landing is called autorotation. The safety limits to conduct this maneuver are based on the aircraft height versus speed...
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Nature Portfolio
2021
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oai:doaj.org-article:38526bface574934b6896aa4238bbdf42021-12-02T14:58:48ZQuantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation10.1038/s41598-021-96773-y2045-2322https://doaj.org/article/38526bface574934b6896aa4238bbdf42021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96773-yhttps://doaj.org/toc/2045-2322Abstract The procedures to be performed after sudden engine failure of a single-engine helicopter impose high workload on pilots. The maneuver to regain aircraft control and safe landing is called autorotation. The safety limits to conduct this maneuver are based on the aircraft height versus speed diagram, which is also known as "Dead Man’s Curve”. Flight-test pilots often use subjective methods to assess the difficulty to conduct maneuvers in the vicinity of this curve. We carried out an extensive flight test campaign to verify the feasibility of establishing quantitative physiological parameters to better assess the workload endured by pilots undergoing those piloting conditions. Eleven pilots were fully instrumented with sensors and had their physiological reactions collected during autorotation maneuvers. Our analyses suggested that physiological measurements (heart rate and electrodermal activity) can be successfully recorded and useful to capture the most effort-demanding effects during the maneuvers. Additionally, the helicopter’s flight controls displacements were also recorded, as well as the pilots’ subjective responses evaluated by the Handling Qualities Rate scale. Our results revealed that the degree of cognitive workload was associated with the helicopter’s flight profile concerning the Height-Speed diagram and that the strain intensity showed a correlation with measurable physiological responses. Recording flight controls displacement and quantifying the pilot's subjective responses show themselves as natural effective candidates to evaluate the intensity of cognitive workload in such maneuvers.José Ricardo Silva ScarpariMauricio Watanabe RibeiroCamila Sardeto DeolindoMaria Adelia Albano AratanhaDonizeti de AndradeCarlos Henrique Quartucci ForsterJosé Márcio Pereira FigueiraFernando Lucas Soares CorrêaShirley Silva LacerdaBirajara Soares MachadoEdson Amaro JúniorJoão Ricardo SatoElisa Harumi KozasaRoberto Gil Annes da SilvaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
Medicine R Science Q |
| spellingShingle |
Medicine R Science Q José Ricardo Silva Scarpari Mauricio Watanabe Ribeiro Camila Sardeto Deolindo Maria Adelia Albano Aratanha Donizeti de Andrade Carlos Henrique Quartucci Forster José Márcio Pereira Figueira Fernando Lucas Soares Corrêa Shirley Silva Lacerda Birajara Soares Machado Edson Amaro Júnior João Ricardo Sato Elisa Harumi Kozasa Roberto Gil Annes da Silva Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| description |
Abstract The procedures to be performed after sudden engine failure of a single-engine helicopter impose high workload on pilots. The maneuver to regain aircraft control and safe landing is called autorotation. The safety limits to conduct this maneuver are based on the aircraft height versus speed diagram, which is also known as "Dead Man’s Curve”. Flight-test pilots often use subjective methods to assess the difficulty to conduct maneuvers in the vicinity of this curve. We carried out an extensive flight test campaign to verify the feasibility of establishing quantitative physiological parameters to better assess the workload endured by pilots undergoing those piloting conditions. Eleven pilots were fully instrumented with sensors and had their physiological reactions collected during autorotation maneuvers. Our analyses suggested that physiological measurements (heart rate and electrodermal activity) can be successfully recorded and useful to capture the most effort-demanding effects during the maneuvers. Additionally, the helicopter’s flight controls displacements were also recorded, as well as the pilots’ subjective responses evaluated by the Handling Qualities Rate scale. Our results revealed that the degree of cognitive workload was associated with the helicopter’s flight profile concerning the Height-Speed diagram and that the strain intensity showed a correlation with measurable physiological responses. Recording flight controls displacement and quantifying the pilot's subjective responses show themselves as natural effective candidates to evaluate the intensity of cognitive workload in such maneuvers. |
| format |
article |
| author |
José Ricardo Silva Scarpari Mauricio Watanabe Ribeiro Camila Sardeto Deolindo Maria Adelia Albano Aratanha Donizeti de Andrade Carlos Henrique Quartucci Forster José Márcio Pereira Figueira Fernando Lucas Soares Corrêa Shirley Silva Lacerda Birajara Soares Machado Edson Amaro Júnior João Ricardo Sato Elisa Harumi Kozasa Roberto Gil Annes da Silva |
| author_facet |
José Ricardo Silva Scarpari Mauricio Watanabe Ribeiro Camila Sardeto Deolindo Maria Adelia Albano Aratanha Donizeti de Andrade Carlos Henrique Quartucci Forster José Márcio Pereira Figueira Fernando Lucas Soares Corrêa Shirley Silva Lacerda Birajara Soares Machado Edson Amaro Júnior João Ricardo Sato Elisa Harumi Kozasa Roberto Gil Annes da Silva |
| author_sort |
José Ricardo Silva Scarpari |
| title |
Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| title_short |
Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| title_full |
Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| title_fullStr |
Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| title_full_unstemmed |
Quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| title_sort |
quantitative assessment of pilot-endured workloads during helicopter flying emergencies: an analysis of physiological parameters during an autorotation |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/38526bface574934b6896aa4238bbdf4 |
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