Further Assessment of a Scalogram-Based PIO Metric using University of Liverpool Tilt Rotor Simulation Data

Cameron, Neil ORCID: 0000-0003-0112-2926, White, Mark D ORCID: 0000-0002-8611-9525, Cunliffe, Christopher, Klyde, David H and Mello, Ricardo SF (2018) Further Assessment of a Scalogram-Based PIO Metric using University of Liverpool Tilt Rotor Simulation Data. In: 2018 AIAA Atmospheric Flight Mechanics Conference, 2018-1-8 - 2018-1-12, Kissimmee, Florida, USA.

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Official URL: http://dx.doi.org/10.2514/6.2018-1017

Abstract

Actuation rate limiting imposed by a Complex Flight Control System can degrade aircraft handling qualities and lead to the introduction of pilot-induced oscillations. Current techniques for predicting pilot-induced oscillations involve Fourier analysis where a frequency response is generated over the whole time history of the flight. This provides the ability to locate the frequency at which the oscillation occurs, but loses the associated time record. Wavelet-based scalograms provide a technique for overcoming these issues where both stick force input power and controlled element phase roll off are combined in a new handling qualities metric called the Inceptor Peak Power-Phase. Further independent evaluation and validation of the metric using a previously unassessed aircraft configuration and evaluation maneuvers is made in this paper using data generated from Pilot-in-the-Loop simulations of the XV-15 tilt rotor at the University of Liverpool’s Heliflight simulation facility. The new metric was successful at identifying correctly both pilot-induced oscillations and non-pilot-induced oscillations for the cases assessed.

Item Type:	Conference or Workshop Item (Unspecified)
Uncontrolled Keywords:	Tilt rotor, tiltrotor, tilt-rotor, PIO, Pilot Induced Oscillation, Wavelet
Depositing User:	Symplectic Admin
Date Deposited:	07 Dec 2017 11:38
Last Modified:	19 Jan 2023 06:48
DOI:	10.2514/6.2018-1017
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3013652