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A generalized Index for the assessment of helicopter pilot vibration exposure

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Title: A generalized Index for the assessment of helicopter pilot vibration exposure
Authors: Tamer, A
Zanoni, A
Cocco, A
Masarati, P
Item Type: Journal Article
Abstract: Helicopters are known to exhibit higher vibratory levels compared to fixed-wing aircraft. The consequences of vibrations depend on the affected helicopter component or subject. Specifically, pilots are in contact with several parts of the helicopter; vibrations can spoil the pilot-vehicle interaction. To evaluate the effects of vibration exposure on pilots, comfort levels resulting from whole-body vibration are computed. However, specific body parts and organs, e.g., hands, feet, and eyes are also adversely affected, with undesirable effects on piloting quality. Therefore, a detailed assessment is necessary for a more accurate estimation of pilot vibration exposure when comparing different configurations, tracking changes during design, and determining the safety of the flight envelope. A generalized assessment is presented by considering vibrations at the seat surface, hand-grip of controls, eyes, and feet. The suggested vibration measure includes comfort, handling, feet-contact, and vision in a single formulation. It is illustrated by coupling a high-fidelity biodynamic model of the pilot to a helicopter aeroservoelastic model in a comprehensive simulation environment. Using appropriate modeling techniques, vibration exposure of helicopter pilots could be evaluated during all stages of design, to achieve a more comfortable and safer flying environment.
Issue Date: 20-Feb-2021
Date of Acceptance: 15-Feb-2021
URI: http://hdl.handle.net/10044/1/87082
DOI: 10.3390/vibration4010012
ISSN: 2571-631X
Publisher: MDPI
Start Page: 133
End Page: 150
Journal / Book Title: Vibration
Volume: 4
Issue: 1
Copyright Statement: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Publication Status: Published
Open Access location: https://www.mdpi.com/2571-631X/4/1/12
Online Publication Date: 2021-02-20
Appears in Collections:Mechanical Engineering



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