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 › Academic › peer-review

10 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	9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course
Pages	17-28
Number of pages	12
DOIs	https://doi.org/10.1063/1.3455457
Publication status	Published - 2010
Externally published	Yes
Event	9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course 2010 - Ancona, Italy Duration: 22 Jun 2010 → 25 Jun 2010 Conference number: 9

Publication series

Name	AIP Conference Proceedings
Volume	1253
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course 2010
Country/Territory	Italy
City	Ancona
Period	22/06/10 → 25/06/10

Keywords

Bladed disc
Helicopter rotor
TLDV

Access to Document

10.1063/1.3455457

Cite this

Fioretti, A., Di Maio, D., Ewins, D. J., Castellini, P., & Tomasini, E. P. (2010). Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements. In 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course (pp. 17-28). (AIP Conference Proceedings; Vol. 1253). https://doi.org/10.1063/1.3455457

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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",

series = "AIP Conference Proceedings",

pages = "17--28",

booktitle = "9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course",

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}

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 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course. AIP Conference Proceedings, vol. 1253, pp. 17-28, 9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course 2010, Ancona, Italy, 22/06/10. https://doi.org/10.1063/1.3455457

Deflection shape reconstructions of a rotating five-blade helicopter rotor from TLDV measurements. / Fioretti, A.; Di Maio, D.; Ewins, D. J. et al.

9th International Conference on Vibration Measurements by Laser and Noncontact Techniques and Short Course. 2010. p. 17-28 (AIP Conference Proceedings; Vol. 1253).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

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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.

N1 - Conference code: 9

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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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T3 - AIP Conference Proceedings

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

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Y2 - 22 June 2010 through 25 June 2010

ER -

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

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