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Evaluation of Rotorcraft Pilot Induced Oscillations (PIO): Results from a DLR/NRC Collaborative Project

Jones, Michael and Alexander, Marc and Höfinger, Marc and Barnett, Miles and Comeau, Perry and Gubbels, Arthur (2021) Evaluation of Rotorcraft Pilot Induced Oscillations (PIO): Results from a DLR/NRC Collaborative Project. 47th European Rotorcraft Forum, Virtual.

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Pilot-induced oscillations (PIOs) still pose a significant risk to safety of rotorcraft operations, particularly as no formal evaluations are conducted during test and evaluation programs. Usually during experimental flight testing if PIOs are observed, additional testing and evaluations are conducted. This paper details results from a joint research effort undertaken by researchers at the National Research Center Canada (NRC) and the German Aerospace Center (DLR) to investigate and test novel methods and techniques to assess PIOs occurring in rotorcraft. The efforts included modifications to test processes and the use of PIO detection and prediction criteria. The research was conducted using both a ground-based simulation facility and a research helicopter. Results of the campaign showed the suitability of a novel subjective assessment scale and a PIO detection algorithm. This was confirmed through both objective and subjective assessment. Furthermore, modifications to ADS-33 mission task elements were also considered to improve the applicability to testing for PIOs.

Item URL in elib:https://elib.dlr.de/143674/
Document Type:Conference or Workshop Item (Speech)
Title:Evaluation of Rotorcraft Pilot Induced Oscillations (PIO): Results from a DLR/NRC Collaborative Project
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jones, MichaelMichael.Jones (at) dlr.deUNSPECIFIED
Alexander, MarcNRC CanadaUNSPECIFIED
Höfinger, MarcMarc.Hoefinger (at) dlr.deUNSPECIFIED
Barnett, MilesMiles.Barnett (at) dlr.deUNSPECIFIED
Comeau, PerryNRC CanadaUNSPECIFIED
Gubbels, ArthurNRC CanadaUNSPECIFIED
Date:7 September 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:rotorcraft; PIO; APC; Flight Test; HQ
Event Title:47th European Rotorcraft Forum
Event Location:Virtual
Event Type:international Conference
Organizer:Royal Aeronautical Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Efficient Vehicle
DLR - Research area:Aeronautics
DLR - Program:L EV - Efficient Vehicle
DLR - Research theme (Project):L - Virtual Rotorcraft and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Jones, Michael
Deposited On:30 Aug 2021 17:03
Last Modified:30 Aug 2021 17:03

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