Deflection Shape Reconstructions of a Rotating Five-blade Helicopter Rotor from TLDV Measurements
- Universita Politecnica delle Marche, Dipartimento di Meccanica, Ancona (Italy)
- University of Bristol, Aerospace Department, Bristol (United Kingdom)
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.
- OSTI ID:
- 21366740
- Journal Information:
- AIP Conference Proceedings, Vol. 1253, Issue 1; Conference: 9. international conference on vibrational measurements by laser and non-contact techniques and short course, Ancona (Italy), 22-25 Jun 2010; Other Information: DOI: 10.1063/1.3455457; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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