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In-flight test campaign to validate PIO detection and assessment tools

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.3390/aerospace7090136
AuthorSearch for: ORCID identifier: https://orcid.org/0000-0003-1782-739X; Search for: 1; Search for: ; Search for: ; Search for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada. Aerospace
FormatText, Article
Subjectrotorcraft; pilot-induced oscillations; rotorcraft pilot couplings; flight test
Abstract
This paper describes a joint research campaign conducted by the German Aerospace Center (DLR) and the National Research Council Canada (NRC) to explore methods and techniques to expose rotorcraft pilot-induced oscillations (PIOs) during flight testing. A flight test campaign was conducted at NRC using the Bell 205 experimental aircraft. Results show that, particularly for the lateral axis, ADS-33 tasks can be successfully applied to expose PIO tendencies. Novel subjective and objective criteria were used during the test campaign. PIO prediction boundaries of the objective phase-aggression criteria (PAC) detection algorithm were validated through results obtained. This was the first use of PAC with data recorded in-flight. To collect subjective feedback, the aircraft–pilot coupling (APC) scale was used. This was the first use of the novel scale in-flight and received favourable feedback from the evaluation pilot. Modifications to ADS-33 mission tasks were found to successfully improve the ability to consistently expose PIOs.
Publication date
PublisherMDPI
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  • Aerospace 7, no. 9, 136.
LanguageEnglish
Peer reviewedYes
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Record identifier7bf90bb8-c189-4f3a-be66-7cd9e9599404
Record created2021-05-04
Record modified2021-05-05
Date modified: