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Analysis of Rotorcraft Pilot Couplings During Active Inceptor Failures

Jones, Michael and Barnett, Miles (2018) Analysis of Rotorcraft Pilot Couplings During Active Inceptor Failures. In: Annual Forum Proceedings - AHS International. AHS International 74th Annual Forum and Technology Display, 13.-18. Mai 2018, Phoenix, Arizona, USA.

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Abstract

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. Testing on DLR’s experimental 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 determine whether PIOs could be exposed through this use of control and/or the resultant severity. The results show that control limiters cause severe PIOs during the isometric failure. Unacceptable failure characteristics were found for six different vehicle configurations and PIOs were exposed by all four pilots. PIO incipience was predicted through the use of offline tools. In future, 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/120209/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis of Rotorcraft Pilot Couplings During Active Inceptor Failures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jones, Michaelmichael.jones (at) dlr.dehttps://orcid.org/0000-0003-1782-739X
Barnett, Milesmiles.barnett (at) dlr.deUNSPECIFIED
Date:13 May 2018
Journal or Publication Title:Annual Forum Proceedings - AHS International
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:Rotorcraft; Pilot Induced Oscillations, Rotorcraft Pilot Couplings; Active Inceptor Sidestick; Failures; Simulation
Event Title:AHS International 74th Annual Forum and Technology Display
Event Location:Phoenix, Arizona, USA
Event Type:international Conference
Event Dates:13.-18. Mai 2018
Organizer:American Helicopter Society (AHS) International
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
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: Jones, Michael
Deposited On:04 Jun 2018 15:50
Last Modified:04 Jun 2018 15:50

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