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

Jones, Michael; Barnett, Miles

doi:10.2514/6.2019-0104

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Furthermore, the model incorporates neuromuscular dynamics, control inceptor dynamics and vestibular feedback. All of these elements have been shown to influence the susceptibility of the vehicle to PIO [4,6,15]. With the use of the Hess model, detailed analysis of the influence of these elements can be conducted to assist in the design process.…”

Section: Extensions To Olopmentioning

confidence: 99%

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The use of the Open-Loop Onset Point (OLOP) to predict rotorcraft pilot-induced oscillations

Jones

2020

CEAS Aeronaut J

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The Open-Loop Onset Point (OLOP) criterion has, for many years, been successfully used as a method to predict quasi-nonlinear pilot-induced oscillations (PIOs) for fixed-wing aircraft. Only limited research has been conducted using the criterion for prediction of PIOs occurring in rotorcraft. 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 'taskspecific' application of OLOP, results obtained in the investigation are encouraging, whereby the objective predictions reflect subjective pilot assessment. From results obtained, a modified boundary is presented.

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Section: Extensions To Olopmentioning

confidence: 99%

“…Another potential source of Cat. II PIOs is control system failures, which cause changes in the pilot-vehicle system response [6,7]. Triggering this type of PIO is a particular concern during the development of novel rotorcraft configurations and experimental flight testing.…”

Section: Introductionmentioning

confidence: 99%

The use of the Open-Loop Onset Point (OLOP) to predict rotorcraft pilot-induced oscillations

Jones

2020

CEAS Aeronaut J

Self Cite

View full text Add to dashboard Cite

show abstract

“…All of these elements have been shown to influence the susceptibility of the vehicle to PIO (Refs. 8,11,18). With the use of the Hess model, detailed analysis of the influence of these elements can be conducted, to assist in the design process.…”

Section: Extensions To Olopmentioning

confidence: 99%

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

Jones¹

2019

Proceedings of the Vertical Flight Society 75th Annual Forum

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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.

show abstract

Designing a Robust Predictive Controller to Prevent Rate-Limiter-Based Pilot-Induced Oscillations in the Frequency Domain

Rezaei

Khosravi

2022

Iran J Sci Technol Trans Electr Eng

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

Cited by 4 publications

References 15 publications

The use of the Open-Loop Onset Point (OLOP) to predict rotorcraft pilot-induced oscillations

The use of the Open-Loop Onset Point (OLOP) to predict rotorcraft pilot-induced oscillations

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

Designing a Robust Predictive Controller to Prevent Rate-Limiter-Based Pilot-Induced Oscillations in the Frequency Domain

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