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The Use of the Open-Loop Onset Point (OLOP) to Predict Rotorcraft Pilot-Induced Oscillations

Jones, Michael (2019) The Use of the Open-Loop Onset Point (OLOP) to Predict Rotorcraft Pilot-Induced Oscillations. In: Annual Forum Proceedings - American Helicopter Society. Annual Forum Proceedings - AHS International, 13.-16. Mai 2019, Philadelphia, Pennsylvania, USA.

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Abstract

The Open-Loop Onset Point (OLOP) criterion has, for many years, been successfully used as a method to predict quasi-non-linear pilot-induced oscillations (PIOs) for fixed-wing aircraft. Only limited research has been conducted using the criterion for prediction of PIOs occurring in rotorcraft. These efforts have shown OLOP to be too conservative for this application. This paper details a study to extend the application of OLOP to rotorcraft, using the combination of control inputs appropriate for the task and a suitable pilot model. Results are compared between pilot subjective opinion and OLOP predictions, from tests performed in a ground-based simulation facility. Using ‘task specific’ application of OLOP, results obtained in the investigation are encouraging. From results obtained, a modified boundary is presented.

Item URL in elib:https://elib.dlr.de/127502/
Document Type:Conference or Workshop Item (Speech)
Title:The Use of the Open-Loop Onset Point (OLOP) to Predict Rotorcraft Pilot-Induced Oscillations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jones, MichaelMichael.Jones (at) dlr.dehttps://orcid.org/0000-0003-1782-739X
Date:13 May 2019
Journal or Publication Title:Annual Forum Proceedings - American Helicopter Society
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Status:Published
Keywords:OLOP; PIO; APC; HQ; Category II; Simulation
Event Title:Annual Forum Proceedings - AHS International
Event Location:Philadelphia, Pennsylvania, USA
Event Type:international Conference
Event Dates:13.-16. Mai 2019
Organizer:Vertical Flight Society 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:17 Sep 2019 14:21
Last Modified:17 Sep 2019 14:21

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