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In-Flight Test Campaign to Validate PIO Detection and Assessment Tools

Jones, Michael and Alexander, Marc and Höfinger, Marc and Barnett, Miles and Comeau, Perry and Gubbels, Arthur (2020) In-Flight Test Campaign to Validate PIO Detection and Assessment Tools. Aerospace, 7 (136), pp. 1-26. Multidisciplinary Digital Publishing Institute (MDPI). doi: 10.3390/aerospace7090136. ISSN 2226-4310.

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Official URL: https://www.mdpi.com/2226-4310/7/9/136


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.

Item URL in elib:https://elib.dlr.de/135939/
Document Type:Article
Title:In-Flight Test Campaign to Validate PIO Detection and Assessment Tools
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jones, Michaelmichael.jones (at) dlr.dehttps://orcid.org/0000-0003-1782-739X
Alexander, MarcNRC CanadaUNSPECIFIED
Höfinger, MarcMarc.Hoefinger (at) dlr.deUNSPECIFIED
Barnett, MilesMiles.Barnett (at) dlr.deUNSPECIFIED
Comeau, PerryNRC CanadaUNSPECIFIED
Gubbels, ArthurNRC CanadaUNSPECIFIED
Date:10 September 2020
Journal or Publication Title:Aerospace
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.3390/aerospace7090136
Page Range:pp. 1-26
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
Keywords:Rotorcraft; Pilot-Induced Oscillations; Rotorcraft Pilot Couplings; Flight Test
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Smart Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Jones, Michael
Deposited On:20 Oct 2020 09:38
Last Modified:18 Nov 2020 04:23

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