Evaluation of vibration reduction devices for helicopter ride quality improvement

Aykut Tamer, Vincenzo Muscarello, Pierangelo Masarati, Giuseppe Quaranta

Research output: Contribution to journalArticlepeer-review

23 Citations (SciVal)

Abstract

This work presents the use of a modern helicopter simulation environment for the evaluation of the combined performance of several systems for helicopter ride quality assessment. The proposed framework can handle increasingly detailed aeroservoelastic helicopter models while providing great flexibility and versatility in modeling human biodynamic models for vibration evaluation as well as models of the vibration attenuation devices. A numerical model representative of a medium weight helicopter is used to demonstrate the approach. Lumped parameter models of seat-cushion and human biodynamics are dynamically coupled to the helicopter model to provide a more realistic estimate of the actual vibratory level experienced by the occupants. Two performance indicators are formulated, based on the acceleration of the seat locations and using the ISO-2631 standard: i) qualitative criteria and related vibration dose values of the individuals seated at prescribed locations of a fully occupied helicopter, and ii) an overall rating of the occupants inside the cabin, considering the most and least comfortable seating distributions as the number of occupants changes. To demonstrate the proposed method, three configurations of helicopter-specific passive vibration absorbers are considered.

Original languageEnglish
Article number105456
JournalAerospace Science and Technology
Volume95
Early online date8 Oct 2019
DOIs
Publication statusPublished - 31 Dec 2019

Bibliographical note

Funding Information:
This work received partial support by Leonardo Helicopter Division . The authors particularly acknowledge LHD for providing part of the data used in the analysis.

Publisher Copyright:
© 2019 Elsevier Masson SAS

Keywords

  • Helicopter ride quality
  • Transport ergonomics
  • Vibration reduction
  • Whole-body vibration

ASJC Scopus subject areas

  • Aerospace Engineering

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