Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements

A. Fioretti; D. Di Maio; D. J. Ewins; P. Castellini; E. P. Tomasini

doi:10.1063/1.3455457

Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements

A. Fioretti^*, D. Di Maio, D. J. Ewins, P. Castellini, E. P. Tomasini

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

9 Citations (Scopus)

Abstract

Helicopters are aircraft machines which are subjected to high level of vibrations, mainly due to spinning rotors. These are made of two or more blades attached by hinges to a central hub, which can make the dynamic behaviour difficult to study. However, they share some common dynamic properties with the ones expected in bladed discs, thereby the analytical modelling of rotors can be performed using some assumptions as the ones adopted for the bladed discs. This paper presents results of a vibrations study performed on a scaled helicopter rotor model which was rotating at a fix rotational speed and excited by an air jet. A simplified analytical model of that rotor was also produced to help the identifications of the vibration patterns measured using a single point tracking-SLDV measurement method.

Original language	English
Title of host publication	AIP Conference Proceedings
Pages	17-28
Number of pages	12
Volume	1253
DOIs	https://doi.org/10.1063/1.3455457
Publication status	Published - 2010
Event	9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course - Ancona, Italy Duration: 22 Jun 2010 → 25 Jun 2010

Conference

Conference	9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course
Country/Territory	Italy
City	Ancona
Period	22/06/10 → 25/06/10

Keywords

Bladed disc
Helicopter rotor
TLDV

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title = "Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements",

abstract = "Helicopters are aircraft machines which are subjected to high level of vibrations, mainly due to spinning rotors. These are made of two or more blades attached by hinges to a central hub, which can make the dynamic behaviour difficult to study. However, they share some common dynamic properties with the ones expected in bladed discs, thereby the analytical modelling of rotors can be performed using some assumptions as the ones adopted for the bladed discs. This paper presents results of a vibrations study performed on a scaled helicopter rotor model which was rotating at a fix rotational speed and excited by an air jet. A simplified analytical model of that rotor was also produced to help the identifications of the vibration patterns measured using a single point tracking-SLDV measurement method.",

keywords = "Bladed disc, Helicopter rotor, TLDV",

author = "A. Fioretti and {Di Maio}, D. and Ewins, {D. J.} and P. Castellini and Tomasini, {E. P.}",

year = "2010",

doi = "10.1063/1.3455457",

language = "English",

isbn = "9780735408029",

volume = "1253",

pages = "17--28",

booktitle = "AIP Conference Proceedings",

note = "9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course ; Conference date: 22-06-2010 Through 25-06-2010",

}

Fioretti, A, Di Maio, D, Ewins, DJ, Castellini, P & Tomasini, EP 2010, Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements. in AIP Conference Proceedings. vol. 1253, pp. 17-28, 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course, Ancona, Italy, 22/06/10. https://doi.org/10.1063/1.3455457

TY - GEN

T1 - Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements

AU - Fioretti, A.

AU - Di Maio, D.

AU - Ewins, D. J.

AU - Castellini, P.

AU - Tomasini, E. P.

PY - 2010

Y1 - 2010

N2 - Helicopters are aircraft machines which are subjected to high level of vibrations, mainly due to spinning rotors. These are made of two or more blades attached by hinges to a central hub, which can make the dynamic behaviour difficult to study. However, they share some common dynamic properties with the ones expected in bladed discs, thereby the analytical modelling of rotors can be performed using some assumptions as the ones adopted for the bladed discs. This paper presents results of a vibrations study performed on a scaled helicopter rotor model which was rotating at a fix rotational speed and excited by an air jet. A simplified analytical model of that rotor was also produced to help the identifications of the vibration patterns measured using a single point tracking-SLDV measurement method.

AB - Helicopters are aircraft machines which are subjected to high level of vibrations, mainly due to spinning rotors. These are made of two or more blades attached by hinges to a central hub, which can make the dynamic behaviour difficult to study. However, they share some common dynamic properties with the ones expected in bladed discs, thereby the analytical modelling of rotors can be performed using some assumptions as the ones adopted for the bladed discs. This paper presents results of a vibrations study performed on a scaled helicopter rotor model which was rotating at a fix rotational speed and excited by an air jet. A simplified analytical model of that rotor was also produced to help the identifications of the vibration patterns measured using a single point tracking-SLDV measurement method.

KW - Bladed disc

KW - Helicopter rotor

KW - TLDV

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U2 - 10.1063/1.3455457

DO - 10.1063/1.3455457

M3 - Conference Contribution (Conference Proceeding)

AN - SCOPUS:77954602115

SN - 9780735408029

VL - 1253

SP - 17

EP - 28

BT - AIP Conference Proceedings

T2 - 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course

Y2 - 22 June 2010 through 25 June 2010

ER -

Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements

Abstract

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Keywords

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