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Analysis of Rotorcraft Pilot-Induced Oscillations Triggered by Active Inceptor Failures

Jones, Michael and Barnett, Miles (2019) Analysis of Rotorcraft Pilot-Induced Oscillations Triggered by Active Inceptor Failures. AIAA Scitech Guidance Navigation and Control Conference, 06.-11. Jan 2019, San Diego, California, United States.

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The use of active inceptor systems allows for control of the aircraft even during mechanical failures within the control inceptor. For the specific case of isometric failure, whereby the inceptor ‘freezes’ in position, a virtual force-displacement model is used to continue to provide control input. Experimental flight tests using the German Aerospace Center’s (DLR) research helicopter (ACT/FHS) has shown the potential to encounter pilot-induced oscillation (PIO) tendencies when flying using this mode. This paper presents results from a simulation campaign undertaken to confirm whether PIOs may be exposed through this use of control and/or the resultant severity. The results show that the isometric failure mode caused severe PIOs. Unacceptable failure characteristics were reported by all four pilots. The use of offline prediction tools showed the incipience of PIO. It is recommended that specific PIO investigations are undertaken during > the evaluation of active inceptor failure modes.

Item URL in elib:https://elib.dlr.de/126358/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis of Rotorcraft Pilot-Induced Oscillations Triggered by Active Inceptor Failures
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jones, MichaelMichael.Jones (at) dlr.dehttps://orcid.org/0000-0003-1782-739X
Barnett, Milesmiles.barnett (at) dlr.deUNSPECIFIED
Date:6 January 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Active Inceptors, Failure, Isometric Control, Future Rotorcraft, Handling Qualities
Event Title:AIAA Scitech Guidance Navigation and Control Conference
Event Location:San Diego, California, United States
Event Type:international Conference
Event Dates:06.-11. Jan 2019
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:19 Mar 2019 15:23
Last Modified:31 Jul 2019 20:24

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