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 |
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Title of host publication | AIP Conference Proceedings |
Pages | 17-28 |
Number of pages | 12 |
Volume | 1253 |
DOIs | |
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 |
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Country/Territory | Italy |
City | Ancona |
Period | 22/06/10 → 25/06/10 |
Keywords
- Bladed disc
- Helicopter rotor
- TLDV